Non-somatosensory distributed physical sign monitoring mattress and method

Abstract

The invention relates to the technical field of intelligent mattresses, and discloses a non-somatosensory distributed physical sign monitoring mattress and method.The non-somatosensory distributed physical sign monitoring mattress comprises a bracket and a mattress body, fixing frames are fixedly installed on the two sides of the bracket, the fixing frames are rotationally connected with rotating shafts, and the rotating shafts penetrate through one ends of rotating blocks and are fixedly connected with the rotating blocks; the other end of the rotating block is rotatably connected with a connecting rod, one end of the connecting rod is rotatably connected with a connecting seat, the connecting seat is slidably connected with an overturning plate, the top of the overturning plate is attached to the mattress body, and the mattress can effectively adjust the sleeping posture of a user through detection of a sensor; therefore, a user is prevented from snoring during sleeping, the sleeping quality of the user is guaranteed, and the physical sign condition of the user can be monitored in real time through the arrangement of the optical fiber layer.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent mattresses, and in particular to a mattress and method for monitoring distributed vital signs without somatosensory sensation. Background Art

[0002] Sleep, as one of the indispensable activities in an individual's life, can not only relieve and eliminate fatigue, but is also a key link in the body's repair and restoration. It plays a vital role in the continuation of an individual's life. Good sleep quality can enhance the body's immune ability and improve the regulatory ability of the nervous system.

[0003] Most of the existing non-body-sensing distributed vital sign monitoring mattresses have relatively single functions and limited detection range when in use, and are unable to effectively adjust the user's body shape, thereby improving the user's sleeping effect.

[0004] To this end, the present invention introduces a mattress and method for non-body-sensing distributed vital sign monitoring. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a non-body-sensing distributed vital sign monitoring mattress and method, which has the advantages of being able to push a user sleeping on the mattress to adjust his or her body position when snoring, thereby improving sleep quality and solving the problems raised in the background technology.

[0006] The present invention provides the following technical solution: a non-body-sensing distributed vital sign monitoring mattress, comprising a bracket and a mattress body, wherein fixing frames are fixedly installed on both sides of the bracket, the fixing frames are rotatably connected to a rotating shaft, the rotating shaft passes through one end of a rotating block and is fixedly connected to the rotating block, the other end of the rotating block is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to a connecting seat, the connecting seat is slidably connected to a flip plate, and the top of the flip plate is in contact with the mattress body.

[0007] Preferably, the mattress body also includes a fiber optic layer, optical fibers are arranged inside the fiber optic layer, a mattress filling layer is arranged on the top of the fiber optic layer, a mattress outer shell layer 2 is arranged on the top of the mattress filling layer, a substrate layer is arranged at the bottom of the fiber optic layer, and a mattress outer shell layer 1 is arranged at the bottom of the substrate layer.

[0008] Preferably, the fixed frame is slidably connected to a moving rod, the moving rod passes through the extension rod and fits with the extension rod, one end of the extension rod is fixedly connected to one end of the rotating block, both ends of the moving rod are fixedly connected to a connecting frame, the connecting frame is fixedly connected to an electric telescopic rod, and the electric telescopic rod is fixedly installed on the fixed frame.

[0009] Preferably, one end of the optical fiber is fixedly connected to a connector, and the other end of the optical fiber is fixedly connected to a transceiver.

[0010] Preferably, the optical fiber is a single-mode optical fiber.

[0011] Preferably, the substrate layer is made of hard cotton.

[0012] Preferably, the optical fibers are arranged in a serpentine pattern, and the spacing between adjacent optical fibers is greater than centimeters.

[0013] Preferably, the rotating block is L-shaped.

[0014] Preferably, a monitoring method for a mattress without somatosensory distributed vital signs monitoring:

[0015] When the user sleeps on the mattress body, the human body will squeeze the optical fibers in the optical fiber layer. The distributed micro-vibration detection system based on Reese scattering can monitor the changes in transmission phase and optical path in different optical fiber segments, and then monitor the user's vital signs and activity status in real time by utilizing the deformation of the optical fiber.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The non-body-sensing distributed vital sign monitoring mattress, through the setting of the pushing component, when in use, when the sensor inside the mattress body detects the user's snoring, it will drive one end of the electric telescopic rod to perform telescopic movement, thereby driving the connecting frame connected to its end to move along the trajectory of the inner wall of the fixed frame, thereby pulling the moving rod connected to the connecting frame to move together, and the extending rod and the rotating block connected to the extending rod are driven by the moving rod to rotate, so that the connecting rod at one end of the rotating block and the connecting seat rotatably connected to the connecting rod are lifted, thereby pushing the flip plate to rotate toward the inside of the bracket, so as to adjust the body shape of the user on the mattress, prevent the user from continuing to snoring, and thus ensure the user's sleep quality.

[0018] 2. The non-body-sensing distributed vital sign monitoring mattress can realize comprehensive monitoring of vital signs, including respiratory rate, heart rate, sleeping posture, sleeping position, vibration information of different positions, etc., through the setting of detection components and by covering the entire mattress with optical fibers. It does not require direct contact with the body and has a wider coverage range. In addition, the distributed acoustic wave monitoring system can provide high-precision physiological signals, avoiding the accuracy problems that may exist in traditional sensors. Finally, the distributed optical fiber monitoring system can provide multi-point continuously changing signals to realize the monitoring of various sleeping postures, sleeping positions, and the movement status of each part, such as leg movement signals. It can also provide a real-time mattress force distribution map, thereby realizing multi-faceted detection of the user while sleeping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0020] Figure 2 For the present invention Figure 1 A side view structural schematic diagram of;

[0021] Figure 3 For the present invention Figure 1 Schematic diagram of some structures;

[0022] Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 5 A non-body-sensing distributed vital sign monitoring mattress according to the present invention;

[0024] Figure 6 is a schematic cross-sectional structural diagram of a mattress of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of a transceiver in a mattress for non-body-sensing distributed vital sign monitoring according to the present invention;

[0026] Figure 8 A schematic diagram of internal scattering of an optical fiber according to the present invention;

[0027] Fig. 9 It is a schematic diagram of the optical fiber micro-vibration sensing principle of the present invention.

[0028] In the figure: 1. bracket; 2. fixing frame; 3. rotating shaft; 4. rotating block; 5. connecting rod; 6. connecting seat; 7. extension rod; 8. moving rod; 9. connecting frame; 10. electric telescopic rod; 11. flip plate; 12. mattress body; 13. optical fiber; 14. connector; 15. transceiver; 16. mattress cover layer one; 17. substrate layer; 18. optical fiber layer; 19. mattress filling layer; 20. mattress cover layer two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-9A non-body-sensing distributed vital sign monitoring mattress includes a bracket 1 and a mattress body 12. A fixing frame 2 is fixedly installed on both sides of the bracket 1. The fixing frame 2 is rotatably connected to a rotating shaft 3. The rotating shaft 3 passes through one end of a rotating block 4 and is fixedly connected to the rotating block 4. The other end of the rotating block 4 is rotatably connected to a connecting rod 5. One end of the connecting rod 5 is rotatably connected to a connecting seat 6. The connecting seat 6 is slidably connected to a flip plate 11. The top of the flip plate 11 is fitted with the mattress body 12. Through the cleverly designed fitting method of the flip plate 11 and the mattress body 12, combined with the flexible operation of mechanical structures such as the rotating block 4 and the connecting rod 5, it is ensured that when the monitoring element operates inside the mattress, the user can hardly feel any mechanical movement or foreign body sensation, thereby providing a more comfortable and natural sleeping experience without affecting the user's sleep quality.

[0031] Among them; the mattress body 12 also includes an optical fiber layer 18, an optical fiber 13 is arranged inside the optical fiber layer 18, a mattress filling layer 19 is arranged on the top of the optical fiber layer 18, a mattress outer layer 20 is arranged on the top of the mattress filling layer 19, a substrate layer 17 is arranged at the bottom of the optical fiber layer 18, and a mattress outer layer 16 is arranged at the bottom of the substrate layer 17. The optical fiber 13 arranged inside the optical fiber layer 18 can use optical principles to non-contact monitor various physiological indicators of the user, such as heart rate, breathing rate, body movement, etc. Compared with traditional sensors, optical fiber monitoring has higher sensitivity and accuracy, and can more accurately reflect the health status of the user. At the same time, the optical fiber layer 18 is located inside the mattress, and is surrounded by the mattress filling layer 19 and the substrate layer 17 above and below respectively. This design ensures that the optical fiber will not cause any pressure or discomfort to the user during the monitoring process, maintains the softness and comfort of the mattress, and allows the user to enjoy high-quality sleep without interference.

[0032] Among them; the fixed frame 2 is slidably connected with a moving rod 8, the moving rod 8 passes through the extension rod 7 and fits with the extension rod 7, one end of the extension rod 7 is fixedly connected to one end of the rotating block 4, both ends of the moving rod 8 are fixedly connected with a connecting frame 9, the connecting frame 9 is fixedly connected with an electric telescopic rod 10, and the electric telescopic rod 10 is fixedly installed with the fixed frame 2.

[0033] Among them; one end of the optical fiber 13 is fixedly connected to a connector 14, which is a standard optical fiber adapter, including LC, ST, SC, FC and MPO interfaces, and the other end of the optical fiber 13 is fixedly connected to a transceiver 15, which contains a light source, a photoelectric converter, a circulator and a microprocessor, and the light source is a pulsed laser with an unrestricted central wavelength and a pulse width of less than 100 nanoseconds.

[0034] Among them; optical fiber 13 is a single-mode optical fiber. Due to its small core diameter, single-mode optical fiber can minimize the scattering of light, making the optical signal more concentrated and stable when transmitted in the optical fiber, and compared with multi-mode optical fiber, single-mode optical fiber has lower loss during transmission, and single-mode optical fiber can maintain stable signal transmission over a longer distance.

[0035] Among them, the material of the backing layer 17 is hard cotton, which has a high density and hardness, and can effectively enhance the support force of the bottom of the mattress, making the overall structure of the mattress more stable. This stable support helps to maintain the flatness and shape of the mattress, avoiding deformation or depression caused by long-term use or uneven weight distribution, thereby extending the service life of the mattress. At the same time, the hard cotton has good elasticity and toughness, and can provide just the right support force without being too stiff. This support force helps to disperse the pressure points of the body, reduce noise and vibration when turning over or moving, and improve the user's sleeping comfort.

[0036] The optical fibers 13 are arranged in a serpentine pattern, and the spacing between adjacent optical fibers 13 is greater than 3 cm.

[0037] Among them, the shape of the rotating block 4 is L-shaped.

[0038] Among them; A monitoring method for a mattress without somatosensory distributed vital signs monitoring:

[0039] When the user sleeps on the mattress body 12, the human body will squeeze the optical fiber 13 in the optical fiber layer 18. The distributed micro-vibration detection system based on Reiss scattering can monitor the changes in the transmission phase and optical path in different optical fiber segments, and then monitor the user's vital signs and activity status in real time by utilizing the deformation of the optical fiber 13.

[0040] Among them; the physiological activities of the human body produce weak vibrations or weak stresses, including the beating of the heart, the ups and downs of the lungs or abdomen, and the activities or shaking of the body, which will change the length and effective refractive index of the optical fiber, that is, the phase of the light will change. The distributed micro-vibration detection system based on Reese scattering can monitor the changes in the transmission phase and optical path in different optical fiber segments.

[0041] Specifically, assuming that the optical path change is Δφ, it can be expressed as:

[0042] Δφ=(n+Δn)(l+Δl)-nl

[0043] Where n is the effective refractive index of the optical fiber when no micro-vibration is induced, l is the length when no micro-vibration is induced, Δn is the change in the effective refractive index of the optical fiber when micro-vibration is induced, and Δl is the change in length when micro-vibration is induced. When micro-vibration acts on the optical fiber, the inherent properties of light, including the refractive index and length, change, which can be described as follows:

[0044] Δl=e s nl

[0045] Δn=e s ξn

[0046] where ξ is the elasto-optic coefficient, η is the elastic coefficient, e s is the axial strain. In the right side of the above formula, the first formula is mainly due to the change in fiber length Δl caused by the deformation effect of the fiber, and the second formula is mainly due to the change in fiber refractive index Δn caused by the elastic-optic effect of the fiber. In addition, according to the characteristics of the fiber material, the phase change of the fiber under pressure F and force area S can be described as follows:

[0047]

[0048] Where υ is the Poisson's coefficient of the optical fiber, E is the Young's modulus of the optical fiber, n is the refractive index of the optical fiber, k0 is the wave number of light in a vacuum, and p ij is the coefficient in the elastic-optic tensor. Therefore, when the force-bearing area of ​​the optical fiber is constant, the greater the pressure on the optical fiber, the greater the phase change of the optical fiber.

[0049] In the fiber-optic distributed micro-vibration monitoring system, the light source is a pulsed laser, the purpose of which is to enhance the intensity of Rayleigh scattering and form an interference pattern with a higher signal-to-noise ratio. The wavelength of Rayleigh scattering is the same as that of the incident light, and the scattering power is expressed by the following formula:

[0050] P R =PSα s τ s υ / 2

[0051] Where P is the peak power of the pulse, S is the capture factor, and the pulse width is τ s ,α s is the scattering constant, which is the propagation speed of light. S is related to the mode field diameter. The smaller the mode field diameter, the larger S is. Therefore, under the same conditions, the Rayleigh scattering of thin-core optical fiber is stronger.

[0052] Assume the pulse width is τ s , then the spatial resolution in the optical fiber distributed monitoring system is:

[0053]

[0054] Where c is the speed of light. Assuming the pulse width is 10 nanoseconds and the fiber refractive index is 1.5, then L limAbout 1 meter, that is, any 1-meter section of optical fiber can be regarded as an independent sensing unit. Since the loss in the optical fiber is very small, the length of the entire sensing optical fiber can easily exceed 20 kilometers. According to the estimate of 45 meters per bed, a distributed optical fiber micro-vibration system can achieve real-time monitoring of at least 400 beds.

[0055] For length L lim When the pulse light passes through the fiber segment, a backscattered Rayleigh pulse will be generated at point A and point B of the fiber segment. There is a phase difference between the backscattered pulses at point A and point B, so interference will occur at the receiving end. The interference light intensity I o It can be described as follows:

[0056]

[0057] I A and I B is the backscattering intensity of point A and point B. Therefore, by receiving the interference light intensity reflected by each fiber segment in real time through the photoelectric detector, the independent and real-time monitoring of the vibration of all fiber segments can be achieved.

[0058] Working principle: during use, when the user on the mattress snores, the sensor inside 12 detects the snoring sound, and it will immediately send a signal to activate the operation of the electric telescopic rod 10. One end of the electric telescopic rod 10 responds quickly and performs a precise telescopic action. This action directly pulls the connecting frame 9 to slide smoothly along the preset track inside the fixed frame 2. As the connecting frame 9 moves, it firmly pulls the moving rod 8 connected to it to form a coherent mechanical transmission chain. The displacement of the moving rod 8 then causes the extension rod 7 to rotate. As the key transmission component, the extension rod 7 drives the rotating block 4 hinged thereto to rotate synchronously due to its rotational motion. This rotational action further affects the connecting rod 5 at one end of the rotating block 4. The connecting rod 5 and the connecting seat 6 are flexibly connected in rotation, so that the connecting seat 6 can rise as the connecting rod 5 is lifted. Thus, the lifting force of the connecting seat 6 acts on the flip plate 11, pushing the flip plate 11 to slowly rotate toward the inside of the bracket 1. This adjustment action accurately changes the support angle of the local area of ​​the mattress, effectively adjusts the user's sleeping posture, thereby reducing or eliminating snoring, and creating a more quiet and comfortable sleeping environment for the user. At the same time, the mattress is covered with optical fibers 13, which can realize comprehensive monitoring of vital signs, including respiratory rate, heart rate, sleeping posture, sleeping position, vibration information at different positions, etc., without direct contact with the body, and has a wider coverage range. In addition, the distributed acoustic wave monitoring system can provide high-precision physiological signals, avoiding the accuracy problems that may exist in traditional sensors. Finally, the distributed optical fiber 13 monitoring system can provide multi-point continuously changing signals to realize various sleeping postures, sleeping positions, and the movement status of each part of the body. Monitoring, such as leg movement signals, can also provide a mattress force distribution map in real time, thereby realizing multi-faceted detection of the user while sleeping.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mattress for non-body-sensing distributed vital signs monitoring, characterized in that: The invention comprises a bracket (1) and a mattress body (12), wherein a fixing frame (2) is fixedly installed on both sides of the bracket (1), the fixing frame (2) is rotatably connected to a rotating shaft (3), the rotating shaft (3) passes through one end of a rotating block (4) and is fixedly connected to the rotating block (4), the other end of the rotating block (4) is rotatably connected to a connecting rod (5), one end of the connecting rod (5) is rotatably connected to a connecting seat (6), the connecting seat (6) is slidably connected to a flip plate (11), and the top of the flip plate (11) is in contact with the mattress body (12).

2. The non-body-sensing distributed vital sign monitoring mattress according to claim 1, characterized in that: The mattress body (12) further comprises an optical fiber layer (18), wherein the optical fiber layer (18) is provided with optical fibers (13), a mattress filling layer (19) is provided on the top of the optical fiber layer (18), a mattress outer shell layer 2 (20) is provided on the top of the mattress filling layer (19), a substrate layer (17) is provided on the bottom of the optical fiber layer (18), and a mattress outer shell layer 1 (16) is provided on the bottom of the substrate layer (17).

3. The non-body-sensing distributed vital sign monitoring mattress according to claim 1, characterized in that: The fixed frame (2) is slidably connected to a moving rod (8), the moving rod (8) penetrates the extension rod (7) and fits with the extension rod (7), one end of the extension rod (7) is fixedly connected to one end of the rotating block (4), both ends of the moving rod (8) are fixedly connected to a connecting frame (9), the connecting frame (9) is fixedly connected to an electric telescopic rod (10), and the electric telescopic rod (10) is fixedly installed on the fixed frame (2).

4. The mattress for non-body-sensing distributed vital signs monitoring according to claim 2, characterized in that: One end of the optical fiber (13) is fixedly connected to a connector (14), and the other end of the optical fiber (13) is fixedly connected to a transceiver (15).

5. The non-body-sensing distributed vital sign monitoring mattress according to claim 2, characterized in that: The optical fiber (13) is a single-mode optical fiber.

6. The non-body-sensing distributed vital sign monitoring mattress according to claim 2, characterized in that: The material of the substrate layer (17) is hard cotton.

7. The non-body-sensing distributed vital sign monitoring mattress according to claim 2, characterized in that: The optical fibers (13) are arranged in a serpentine pattern, and the distance between adjacent optical fibers (13) is greater than 3 centimeters.

8. The non-body-sensing distributed vital sign monitoring mattress according to claim 1, characterized in that: The shape of the rotating block (4) is L-shaped.

9. A monitoring method for a mattress without body sense distributed vital signs monitoring according to claim 2 comprises the following steps: When a user sleeps on the mattress body (12), the human body squeezes the optical fiber (13) in the optical fiber layer (18), and the distributed micro-vibration detection system based on Reiss scattering monitors the changes in the transmission phase and optical path in different optical fiber segments, and then monitors the user's vital signs and activity status in real time by utilizing the deformation of the optical fiber (13).

10. A mattress detection method for non-body-sensing distributed vital sign monitoring according to claim 9, characterized in that; The method for performing detection by the distributed micro-vibration detection system based on Reese scattering comprises the following steps: Assuming the optical path change is Δφ, it can be expressed as: Δφ=(n+Δn)(l+Δl)-nl Δl=e s ηl Δn=e s ξn Where n is the effective refractive index of the optical fiber when no micro-vibration is induced, l is the length when no micro-vibration is induced, Δn is the change in the effective refractive index of the optical fiber when micro-vibration is induced, Δl is the change in length when micro-vibration is induced, where ξ is the elasto-optic coefficient, η is the elastic coefficient, e s Is the axial strain. In the right side of the above formula, the first formula is mainly due to the fiber length change Δl caused by the deformation effect of the fiber, and the second formula is mainly due to the fiber refractive index change Δn caused by the elastic-optic effect of the fiber; The phase change of the optical fiber under the condition of pressure F and force area S is described as follows: Where v is the Poisson coefficient of the optical fiber, E is the Young's modulus of the optical fiber, n is the refractive index of the optical fiber, k0 is the wave number of light in a vacuum, and p ij is the coefficient in the elastic-light tensor; The wavelength of Rayleigh scattering is the same as the wavelength of the incident light, and the scattered power is expressed as follows: P R =PSα s t s v / 2 Where P is the peak power of the pulse, S is the capture factor, and the pulse width is τ s ,α s is the scattering constant, v is the propagation speed of light; Assume the pulse width is τ s , then the spatial resolution in the optical fiber distributed monitoring system is: Where c is the speed of light, for a length of L lim When the pulse light passes through the fiber segment, a backscattered Rayleigh pulse will be generated at point A and point B of the fiber segment. There is a phase difference between the backscattered pulses at point A and point B, so interference will occur at the receiving end. The interference light intensity I O The description is as follows: I A and I B is the backscattering intensity of point A and point B.

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