CN109744785B - Intelligent self-adaptive mattress based on flexible pressure sensor array - Google Patents
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- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses an intelligent self-adaptive mattress based on a flexible pressure sensor array, which comprises: the sensing layer consists of a flexible pressure sensor array and is used for detecting pressure signals of all parts of the upper surface of the sensing layer in real time; the support layer is arranged on the upper surface of the sensing layer and is used for supporting a human body; the execution layer is arranged on the lower surface of the sensing layer and is used for adjusting the shapes of the sensing layer and the supporting layer; and the controller is respectively connected with the sensing layer and the executing layer, and is used for controlling the sensing layer to monitor the pressure distribution signal of the upper surface in real time and controlling the deformation of the executing layer according to the pressure distribution signal. By utilizing the invention, the self surface pressure distribution condition can be monitored in real time, and the self surface shape can be changed accordingly, so that the user can keep healthy whole body pressure distribution under any sleeping position.
Description
Technical Field
The invention belongs to the field of intelligent mattresses in intelligent households, and particularly relates to an intelligent self-adaptive mattress based on a flexible pressure sensor array.
Background
There are various related products and concepts in the field of intelligent mattresses, most of which can provide a plurality of measures related to the physical state of a user, such as heart rate, sleeping posture, etc., but have no feedback function. Even if the user can know the sleep state of the user, the user cannot effectively adjust the sleep state. The main reason for this is that the sensor detecting the relevant parameter is rigid and if the mattress is actively changed shape to put the user in a healthier sleeping position, the sensor will also deform and fail. Because flexible electronic technology is not used, the array density of the sensors used by the mattresses is not high, and parameters such as pressure at a certain point on the surface of the mattresses can be roughly detected.
Some existing intelligent mattresses have feedback function, but the change is the hardness of the upper surface of the mattress, rather than the shape of the upper surface of the mattress. The utility model discloses an intelligent mattress according to chinese patent document with publication number CN108185723a, including the mattress body, be the coating around the mattress body, the inside mattress core that is provided with of coating, its characterized in that, the front portion of mattress body is provided with pillow portion, the inside sleep monitoring devices that is provided with of pillow portion, be equipped with testing layer and zone of heating from last down between the inner wall upside of coating and the mattress core in proper order, the testing layer is including the film temperature sensor and the film pressure sensor on upper portion that are located the lower part respectively, the zone of heating lower part is provided with a plurality of equidistance air bags of arranging, the one end of every air bag all is connected with a hose, the hose all passes the trompil on the mattress body and extends to in the control box, control box inside is provided with air pump and controller.
The intelligent mattress has the characteristics of temperature and humidity regulation and hardness adjustment, and the adjustment cannot change the pressure distribution on the surface of the mattress according to the requirement, so that a user cannot recover a healthy sleeping posture. At the same time, mattresses cannot perform more advanced functions such as massage and waking up.
In addition, some intelligent mattresses do not have an effective detection function, but can only change shape as a whole under the control of a user. The shape change is free of data support, blind and cannot achieve the effect of improving sleep.
Disclosure of Invention
The invention aims to provide an intelligent self-adaptive mattress based on a flexible pressure sensor array, which can monitor the surface pressure distribution condition of a user in real time and change the surface shape of the user according to the surface pressure distribution condition, so that the user can keep healthy whole body pressure distribution under any sleeping posture.
An intelligent self-adapting mattress based on a flexible pressure sensor array, comprising:
the sensing layer consists of a flexible pressure sensor array and is used for detecting pressure signals of all parts of the upper surface of the sensing layer in real time;
the support layer is arranged on the upper surface of the sensing layer and is used for supporting a human body;
the execution layer is arranged on the lower surface of the sensing layer and is used for adjusting the shapes of the sensing layer and the supporting layer;
and the controller is respectively connected with the sensing layer and the executing layer, and is used for controlling the sensing layer to monitor the pressure distribution signal of the upper surface in real time and controlling the deformation of the executing layer according to the pressure distribution signal.
The invention is divided into three functional layers, the pressure distribution condition of the upper surface is monitored in real time through the sensing layer, the change and maintenance of the surface shape of the mattress are controlled through the execution layer, and the human body is supported through the supporting layer.
The flexible pressure sensor array comprises two layers of flexible substrate films and two layers of wires which are arranged between the two layers of flexible substrate films in a crossed and overlapped mode, each layer of wires is composed of a plurality of wires which are arranged in parallel, each intersection point is provided with a pressure sensitive unit, one layer of wires is connected with a scanning circuit with a multiplexer, and the other layer of wires are connected with a signal acquisition device.
The scanning circuit gates all pressure sensitive units of one wire at a time, and the controller controls the high-frequency switching to gate all wires of one layer in sequence. The sensing layer will also deform when the mattress is deformed, but the piezoresistive properties of its pressure sensitive unit will not change due to the certain flexibility of the sensing layer.
The sensing layer may detect the pressure change by one or more of a resistance value change, a capacitance value change, and a voltage value generated by a piezoelectric effect of the pressure sensitive unit. Because of the general application and the sustainable development of the intelligent indoor environment regulation and control system, articles such as bedding and the like are not contained by default in the using process of the mattress.
The material of the two layers of flexible substrate films is PDMS (polydimethylsiloxane). The conducting wire and the pressure sensitive unit are both made of metal materials, and are coated on the PDMS film by a physical or chemical deposition method.
Preferably, the two layers of wires are all snakelike wires, so that the influence of stretching on electrical properties is reduced in the deformation process, and the wires are prevented from being broken in the deformation of the sensing layer.
Preferably, the two layers of flexible substrate films are rigidity patterned substrates, and the rigidity of the films in different areas is different, so that isolation of tensile strain can be realized, and the tensile property of the sensing layer is improved.
The supporting layer is made of soft silica gel and has a certain thickness, so that smoothness of transition of the surface shape of the mattress and soft and safe contact between the mattress and a user can be ensured, and meanwhile, the deformation performance of the surface of the mattress is ensured.
The execution layer is an air bag type air cylinder array, the air bag type air cylinder array is fixed through a mesh-shaped bracket, each air cylinder is externally connected with an air pump respectively, and the controller is used for controlling the expansion and the contraction of each air cylinder independently and supporting a weight on the air cylinder array.
The controller is provided with a central control chip, the sensing layer converts analog signals of pressure distribution into digital signals and transmits the digital signals to the central control chip, the central control chip invokes a program trained by a neural network, the sleeping position of a user at the moment is obtained according to the pressure distribution, the head, the chest, the waist and other areas are distinguished, the pressure distribution is analyzed and compared with ideal pressure distribution under the sleeping position, the stroke difference of an air cylinder is calculated, and the air cylinder is controlled to stretch through the controller.
Preferably, the central control chip can be replaced by a wireless scheme. The controller is provided with a wireless transmission device, the wireless transmission device is connected and communicated with the mobile equipment, the sensing layer converts analog signals of pressure distribution into digital signals and then transmits the digital signals to the mobile equipment through the wireless transmission device, the mobile equipment invokes a program trained through a neural network, the sleeping position of a user at the moment is obtained according to the pressure distribution, the pressure distribution is analyzed and compared with ideal pressure distribution under the sleeping position, an air cylinder stroke difference value is calculated, and the air cylinder is controlled to stretch out and draw back through the controller.
Preferably, the air pump is an ultra-silent air pump with an outside wrapped with sound insulation materials, and the ultra-silent air pump is arranged at a position far away from the mattress through an lengthening air circuit, so that the sound of the air pump is reduced to the greatest extent, and the sleeping of a user is not influenced.
Compared with the prior art, the invention has the following beneficial effects:
1. the intelligent self-adaptive mattress provided by the invention is provided with the measuring unit with higher density, and can measure the pressure distribution on the surface of the mattress with higher resolution.
2. The intelligent self-adaptive mattress can accurately measure the pressure distribution on the surface of the mattress after deformation.
3. The intelligent self-adaptive mattress can scientifically and accurately control the surface shape of the mattress and provide real-time feedback based on sleeping postures of users and pressure distribution data of the surface of the mattress.
4. The intelligent self-adaptive mattress has high functional customization, and the sensing layer and the executing layer can be independently controlled by external programs. After the external program authority is opened, the potential application scene is immeasurable. For example, the device can help the body inconveniences to finely adjust the body posture to perform operations, excretion and other actions, and can also realize functions of massage, waking up, falling protection of the bed edge and the like in various forms.
5. The invention is different from the traditional mattress, and does not need the pillow, bedding and other redundant articles. Pillow is used as an ancient way of adjusting the pressure distribution on the back of the human body, and can only provide a fixed height of support at a fixed position of the mattress. On the mattress integrated with the sensing layer and the execution layer capable of changing the shape of the mattress, the head of a person can automatically lift up to form a structure similar to a pillow. The problems of stiff neck and the like will not exist.
6. The sleep data of the user and other information of the user collected in advance can be collected anonymously and used for research of modern medical big data.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an intelligent self-adaptive mattress based on a flexible pressure sensor array of the present invention;
fig. 2 is a schematic diagram of a sensing layer structure of an intelligent self-adaptive mattress based on a flexible pressure sensor array.
Detailed Description
The invention will be described in further detail with reference to the drawings and examples, it being noted that the examples described below are intended to facilitate the understanding of the invention and are not intended to limit the invention in any way.
As shown in fig. 1, an intelligent adaptive mattress based on a flexible pressure sensor array includes a support layer 1, a sensing layer 2, an actuation layer 3, and a mattress foundation 5.
The supporting layer 1 is arranged on the upper surface of the sensing layer 2, the thickness can be set according to the requirement, and the thicker supporting layer 1 can change the shape of the mattress into a gentle one. The execution layer 3 is arranged on the lower surface of the sensing layer 2, the execution layer 3 is an air bag type cylinder array, and the execution layer 3 is fixed through a meshed bracket 4. The mattress foundation 5 is positioned at the bottom layer and has a relatively large thickness, similar to a conventional mattress, for supporting and protecting the internal structure.
The structure of the sensing layer 2 is shown in fig. 2, and the sensing layer is integrally formed by two layers of flexible substrate films 20, in this embodiment, the flexible substrate films 20 are made of PDMS (polydimethylsiloxane), the upper layer flexible substrate film is provided with a plurality of upper layer wires 11, and the lower layer flexible substrate film is provided with a plurality of lower layer wires 16. The upper layer of wires 11 and the lower layer of wires 16 are cross-plied, each intersection being provided with a pressure sensitive element 15. The leads and the pressure sensitive cells 15 are all metallic materials and are coated on the flexible substrate film 20 of PDMS by physical or chemical deposition.
The upper layer wire 11 is externally connected with a scanning circuit with a multiplexer 14, and the multiplexer 14 is connected with a controller 13 and is powered by a power supply component 12. The lower conductors 16 are externally connected with a signal acquisition device 17, and each lower conductor 16 is subjected to signal amplification treatment by a feedback resistor 18 and an amplifier 19 before being connected with the signal acquisition device 17.
The controller 13 is also connected with the execution layer 3, each cylinder of the execution layer 3 is externally connected with an air pump respectively, each cylinder is independently provided with an electromagnetic directional valve, and the controller 13 can control the sensing layer 2 to monitor the upper surface pressure distribution signal in real time on one hand and can control the electromagnetic directional valve to enable the cylinder to stretch out and draw back on the other hand.
In this embodiment, the controller 13 is further provided with a bluetooth transmission module, so that the mattress communicates with a personal computer or a smart phone of a user, and the computing device of the external device is used to process signals and give instructions. In the using process, the sensing layer 2 converts the received analog signals of each part into digital signals, the digital signals are transmitted to a personal computer or a smart phone of a user through Bluetooth, the personal computer or the smart phone invokes a program trained through a neural network, the sleeping position of the user at the moment is obtained according to the pressure distribution, the pressure distribution is analyzed and compared with the ideal pressure distribution under the sleeping position to give out a cylinder stroke difference value, the electromagnetic directional valve of the cylinder is controlled through the controller 13, and the inflation and deflation of each electromagnetic directional valve are controlled, so that the effect of controlling the expansion and contraction of the cylinder is achieved, the shape of the mattress is changed, and the optimal pressure is continuously provided for each part of a body. By cycling the above-described processes, functions are realized.
According to the intelligent self-adaptive mattress, the sensing layer 2 adopts the large-area flexible pressure sensor array with ultrahigh resolution, so that the comprehensive dead angle-free intelligent recognition of the sleeping position of a human body can be realized, meanwhile, the shape of the mattress is adjusted by matching with the execution layer 3, the intelligent mattress capable of performing real-time self-adjustment according to the body shape and sleeping position of each person can reasonably distribute the pressure of the human body, the burden of lumbar vertebrae and cervical vertebrae is reduced, and the comfortable and relaxed deep sleeping experience is brought to people.
The foregoing embodiments have described in detail the technical solution and the advantages of the present invention, it should be understood that the foregoing embodiments are merely illustrative of the present invention and are not intended to limit the invention, and any modifications, additions and equivalents made within the scope of the principles of the present invention should be included in the scope of the invention.
Claims (3)
1. An intelligent self-adaptive mattress based on a flexible pressure sensor array, comprising:
the sensing layer consists of a flexible pressure sensor array and is used for detecting pressure signals of all parts of the upper surface of the sensing layer in real time; the flexible pressure sensor array comprises two layers of flexible substrate films and two layers of wires which are arranged between the two layers of flexible substrate films in a crossed and overlapped mode, each layer of wires consists of a plurality of wires which are arranged in parallel, each intersection point is provided with a pressure sensitive unit, one layer of wires is connected with a scanning circuit with a multiplexer, and the other layer of wires is connected with a signal acquisition device; the two layers of flexible substrate films are made of PDMS, the conducting wires and the pressure sensitive units are made of metal materials, and the PDMS films are coated by a physical or chemical deposition method; both layers of wires are serpentine wires; the two layers of flexible substrate films are rigidity patterned substrates, and the rigidity of the films in different areas is different;
the support layer is arranged on the upper surface of the sensing layer and is used for supporting a human body; the material of the supporting layer is silica gel;
the execution layer is arranged on the lower surface of the sensing layer and is used for adjusting the shapes of the sensing layer and the supporting layer; the execution layer is an air bag type air cylinder array, the air bag type air cylinder array is fixed through a mesh-shaped bracket, each air cylinder is externally connected with an air pump respectively, and the controller is used for controlling the expansion and the contraction of each air cylinder independently;
the controller is respectively connected with the sensing layer and the executing layer, and is used for controlling the sensing layer to monitor the pressure distribution signal of the upper surface in real time and controlling the deformation of the executing layer according to the pressure distribution signal; specifically, a central control chip is arranged on the controller, the sensing layer converts analog signals of pressure distribution into digital signals and transmits the digital signals to the central control chip, the central control chip invokes a program trained by a neural network, the sleeping position of a user is obtained according to the pressure distribution, the pressure distribution is analyzed and compared with ideal pressure distribution under the sleeping position, an air cylinder stroke difference value is calculated, and the air cylinder is controlled to stretch out and draw back through the controller.
2. The intelligent self-adaptive mattress based on the flexible pressure sensor array according to claim 1, wherein the controller is provided with a wireless transmission device, the wireless transmission device is connected and communicated with the mobile device, the sensing layer converts analog signals of pressure distribution into digital signals and transmits the digital signals to the mobile device through the wireless transmission device, the mobile device invokes a program trained through a neural network, the sleeping position of a user at the moment is obtained according to the pressure distribution, the pressure distribution is analyzed and compared with ideal pressure distribution under the sleeping position, an air cylinder stroke difference value is calculated, and the air cylinder is controlled to stretch through the controller.
3. The intelligent self-adaptive mattress based on the flexible pressure sensor array according to claim 1, wherein the air pump is an ultra-silent air pump with sound insulation material wrapped outside, and the ultra-silent air pump is arranged at a position far away from the mattress through an elongated air channel.
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| CN201910132957.4A CN109744785B (en) | 2019-02-22 | 2019-02-22 | Intelligent self-adaptive mattress based on flexible pressure sensor array |
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| CN201910132957.4A CN109744785B (en) | 2019-02-22 | 2019-02-22 | Intelligent self-adaptive mattress based on flexible pressure sensor array |
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