Sleep monitoring and nursing device for old people

Abstract

The invention relates to the technical field of monitoring equipment, in particular to an old people sleep monitoring and nursing device which comprises a nursing mechanism and a pressure sensor, and the pressure sensor is installed on the nursing mechanism and used for sensing physiological signs of a sleeper; the nursing mechanism comprises a bottom plate, a lifting plate, a transmission mechanism and an air cushion; the lifting plate is fixedly connected with the end of the bottom plate, the lifting plate is connected with the air cushion through the transmission mechanism, and the air cushion is used for generating air pressure to enable the lifting plate to vertically ascend and descend. The transmission mechanism comprises a cylinder body, a sealing plate and a transmission unit; the barrel is installed on the outer side wall of the side plate, the sealing plate is arranged in the barrel in a sealed and sliding mode, and the top of the barrel is connected with the air outlet end of the air cushion. According to the device, through pure mechanical pneumatic transmission, when the risk of falling from the bed is detected, no electronic signal processing or algorithm decision is needed, the air pressure change is directly converted into the vertical movement of the baffle, the response hysteresis is fundamentally eliminated, and a physical barrier can be instantly raised when the body of an old person is unbalanced or turns to the bed edge.

Description

Technical Field

[0001] This invention patent relates to the field of monitoring equipment technology, and more specifically, to a sleep monitoring and care device for the elderly. Background Technology

[0002] Traditional sleep care for the elderly, especially in preventing falls from bed, primarily relies on human caregivers. For elderly individuals at higher risk of falls (such as those with sleep disorders, cognitive impairment, limited mobility, decreased balance, those requiring sedatives or psychotropic medications, or those with post-stroke sequelae), this risk is particularly pronounced at night. Human care typically requires caregivers to make regular rounds or install fixed physical bed rails. The former is not only labor-intensive but also difficult to maintain consistently at night, creating blind spots; while the latter provides some physical protection, it requires the elderly to open and close it themselves or with assistance, which is inconvenient, restricts their freedom of movement, and poses a significant obstacle, especially for those who frequently need to get up at night, potentially even leading to tripping hazards.

[0003] To reduce the frequency of caregiver rounds, existing technologies include electronic monitoring and alarm devices. These primarily utilize camera-based visual monitoring systems or piezoelectric sensors under the mattress to monitor the elderly's sleep patterns (such as breathing and body movement). For example, Chinese invention patent (CN120021946A) discloses a suspended sleep monitoring device for the elderly. This device features a monitor that can move along the length of a connecting beam, using body temperature and sleep quality monitoring components to monitor the elderly in real time. Its main purpose is to reduce blind spots and improve the continuity and accuracy of monitoring. Another example is the non-contact intelligent sleep monitor disclosed in Chinese patent (CN221555572U). This monitor uses removable soft and hard covers to protect the piezoelectric film sensor. In use, the device is placed under the mattress with the soft cover facing upwards. When the soft cover and piezoelectric film sensor are subjected to external force, the piezoelectric film sensor generates changes in charge or voltage, thereby monitoring sleep information (such as breathing and body movement).

[0004] The two types of care devices mentioned above monitor the sleep status of the elderly through cameras and various monitoring devices, and through sensors. While they provide abundant information at the "monitoring" level, they are fundamentally insufficient in terms of "substantial and real-time care and protection," failing to meet the core need to prevent bed falls. Therefore, addressing the fundamental lack of substantial active protection in existing technologies, the applicant provides a mechanical, rapid-response sleep care device for preventing falls in the elderly. Summary of the Invention

[0005] The purpose of this invention is to provide a higher level of sleep monitoring and care device for the elderly. This device uses pure mechanical pneumatic transmission. When a risk of falling out of bed is detected, it directly converts the change in air pressure into the vertical movement of the baffle without any electronic signal processing or algorithm decision-making. This fundamentally eliminates response lag and can raise a physical barrier the moment the elderly lose their balance or turn to the edge of the bed.

[0006] The present invention is implemented as follows: a sleep monitoring and care device for the elderly includes a care mechanism and a pressure sensor. The pressure sensor is installed on the care mechanism to sense the physiological signs of the sleeper. The care mechanism includes a base plate, a lifting plate, a transmission mechanism, and an air cushion. The lifting plate is fixedly connected to the end of the base plate. The transmission mechanism connects the lifting plate to the air cushion and uses the air cushion to generate air pressure to make the lifting plate rise and fall vertically.

[0007] Furthermore, the lifting plate includes a baffle and a hollow side plate. The baffle is slidably disposed inside the side plate, and the outer wall of the side plate is fixedly connected to the end of the fixed base plate.

[0008] Furthermore, the transmission mechanism includes a cylinder, a sealing plate, and a transmission unit; the cylinder is installed on the outer wall of the side plate, the sealing plate is slidably disposed inside the cylinder, and the top of the cylinder is connected to the air outlet end of the air cushion; the transmission unit is connected to the bottom of the cylinder and drives the baffle to move along the height direction of the side plate under the action of the sealing plate.

[0009] Furthermore, the transmission unit is a connecting pipe, one end of which is connected to the cavity formed by the side plate and the bottom surface of the baffle, and the other end is connected to the end of the cylinder; a sealed cavity is formed between the sealing plate, the cylinder, the connecting pipe, the baffle, and the side plate.

[0010] Furthermore, the transmission unit includes a rack, a gear, and a connecting plate; one end of the rack is fixedly connected to the sealing plate and passes through the bottom of the cylinder, and the rack is slidably connected to the cylinder; the side of the baffle near the rack is the tooth surface, and the gear meshes with both the baffle and the rack; the connecting plate is fixedly installed at the bottom of the side plate, and the shaft of the gear is rotatably connected to the connecting plate.

[0011] Furthermore, there are multiple transmission mechanisms and air cushions connected to each other.

[0012] Furthermore, there are multiple transmission mechanisms and one air cushion, with the top of the cylinder of each of the multiple transmission mechanisms simultaneously connected to the air cushion.

[0013] Furthermore, the transmission mechanism includes a housing, a sliding frame, a second spring, and a third spring. The housing is fixedly installed on the top of the side plate, and both the top and bottom surfaces of the housing have openings that match the cross-sectional dimensions of the baffle. The opening of the sliding frame matches the dimensions of the baffle. The third spring is horizontally installed inside the housing, with one end of the third spring fixedly connected to the inner side wall of the housing and the other end of the third spring fixedly connected to the sliding frame. The side of the housing away from the third spring is connected to the air outlet of the airbag. The second spring is installed inside the side plate, with its top and bottom fixedly connected to the bottom surface of the baffle and the inner bottom surface of the side plate, respectively. In the initial state, the sliding frame is located at the end of the housing near the airbag due to the elastic force of the third spring, and the baffle is completely located inside the side plate due to the action of the sliding frame, causing the second spring to be in a compressed state.

[0014] Furthermore, the base plate includes a fixed base plate, a movable base plate, and a spring; the fixed base plate and the movable base plate are slidably connected, and the two ends of the spring are respectively connected to the fixed base plate and the movable base plate.

[0015] Furthermore, each air cushion is equipped with a solenoid valve at its air outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This device not only monitors various vital signs of elderly people during sleep in real time using pressure sensors, but also automatically raises the lifting platform when the elderly person is at risk of falling out of bed. This upgrades the existing "post-event response" to "in-event intervention," realizing a technological upgrade from virtual monitoring to physical protection. Furthermore, this device uses a purely mechanical pneumatic transmission structure, placing the air cushion at the edge of the bed. When the air cushion is subjected to significant pressure (indicating a risk of falling out), the device directly converts the pressure change into vertical movement of the lifting platform without any electronic signal processing or algorithmic decision-making, fundamentally eliminating response lag and improving the device's reliability. 2. This device uses a purely mechanical transmission system consisting of multiple air cushions, connecting pipes, and sealed chambers. When the air cushion is subjected to large-area compression (the elderly person's center of gravity shifts to the edge of the bed, posing a risk of falling), the gas pressure is directly transmitted through the connecting pipes to the sealed chamber of the lifting plate without delay, driving the baffle to rapidly rise to the protective height, forming a solid anti-fall barrier. When the air cushion is only subjected to small-area compression (such as when getting up at night to prop up the bed), the small amount of gas only causes the lifting plate to rise and fall slightly, ensuring unobstructed passage for the elderly. 3. This device uses multiple sets of gear and rack transmission units to work together to create a single integrated air cushion. When the air cushion is under pressure in a small area (such as when getting up at night to prop up the bed), the gas pressure is insufficient to overcome the weight of the baffle and the frictional resistance of the system, so the baffle remains in a low position to ensure that the elderly can pass through without obstruction. When the air cushion is under pressure in a large area (when the elderly person's center of gravity shifts to the edge of the bed, posing a risk of falling out of bed), the high-pressure gas pushes the rack to move straight down, and through the gear reversal transmission, the baffle is rapidly raised, thus forming a solid anti-fall barrier. 4. This device has a return spring (spring two) between the baffle and the side plate, and a horizontal sliding frame with a pre-compression resistance spring (spring three) is configured in the transmission mechanism. When the air cushion is under pressure on a small area (such as when getting up at night to prop up the bed), the gas pressure is less than the pre-compression of spring three, the sliding frame is in a locked state, and the baffle is constrained by the sliding frame and remains in a low position; when the air cushion is under pressure on a large area (the elderly person's center of gravity shifts to the edge of the bed, posing a risk of falling out of bed), the gas pressure exceeds the threshold of spring three and pushes the sliding frame to the maximum compression position of spring three, releasing the baffle constraint and causing it to bounce up under the action of the return spring, thereby forming a solid anti-fall barrier; 5. The base plate of this device is elastically connected to the fixed base plate and the movable base plate by a pre-tension spring (spring one). Through the adaptive contraction of the spring tension, the distance between the lifting plates can be steplessly adjusted within a certain range, which is compatible with different sizes of beds and generates a certain clamping force to ensure that the device is stable and does not shift. At the same time, the pressure plate sensor integrated into the base plate directly contacts the bottom surface of the mattress, and simultaneously realizes multi-dimensional physiological sign monitoring such as respiratory rate, heart rate, and body movement, providing real-time data support for bed fall risk warning.

[0017] 6. To address the signal attenuation issue with soft mattresses, this device innovatively places a pressure-plate sensor on the upper surface of the mattress, allowing for direct and flexible contact with the human body. This design eliminates signal blockage caused by mattress deformation in traditional under-mounted sensors, completely resolving the problem of monitoring failure with soft mattresses. Attached Figure Description

[0018] Figure 1 This is a front sectional view of a sleep monitoring and care device for the elderly provided in Embodiment 1 of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged view of point B in the middle; Figure 4 This is a top view of a sleep monitoring and care device for the elderly provided in Embodiment 1 of the present invention (when not installed on the bed); Figure 5 This is a front sectional view of a sleep monitoring and care device for the elderly provided in Embodiment 1 of the present invention during use; Figure 6 This is a top view of a sleep monitoring and care device for the elderly provided in Embodiment 1 of the present invention during use; Figure 7 This is a side view of the caregiving mechanism located at the lifting platform position provided in Embodiment 1 of the present invention; Figure 8 This is a front sectional view of the elderly sleep monitoring and care device with a lifting plate installed on one side, as provided in Embodiment 1 of the present invention. Figure 9This is a front sectional view of a sleep monitoring and care device for the elderly provided in Embodiment 2 of the present invention during use; Figure 10 yes Figure 9 Enlarged view of point A in the middle; Figure 11 This is a side view of the care mechanism provided in Embodiment 2 of the present invention located at the lifting plate position; Figure 12 This is a top view of a sleep monitoring and care device for the elderly provided in Embodiment 2 of the present invention during use; Figure 13 This is a front sectional view of a sleep monitoring and care device for the elderly provided in Embodiment 3 of the present invention during use; Figure 14 yes Figure 13 Enlarged view of point A in the middle; Figure 15 This is a front sectional view of a sleep monitoring and care device for the elderly provided in Embodiment 4 of the present invention during use; Figure 16 This is a top view of an elderly sleep monitoring and care device provided in Embodiment 4 of the present invention when it is not in use; Figure 17 This is a top view of a sleep monitoring and care device for the elderly provided in Embodiment 4 of the present invention during use.

[0019] Reference numerals used in the above figures: 1. Air cushion; 2. Fixed base plate; 3. Pressure plate sensor; 4. Movable base plate; 5. Side plate; 6. Baffle; 7. Cylinder; 8. Solenoid valve; 9. Sealing plate; 10. Housing; 11. Connecting pipe; 12. Bed; 13. Mattress; 14. Gear; 15. Connecting plate; 16. Rack; 17. Sliding frame; 18. Spring 3; 19. Spring 2; 20. Spring 1. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0022] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] Reference Figures 1-17 The image shows a preferred embodiment of the present invention.

[0024] Example 1: A sleep monitoring and care device for the elderly, such as Figures 1-8 As shown, the system mainly consists of a monitoring mechanism and a pressure sensor. The pressure sensor is a conventional pressure-plate sensor 3, capable of sensing the real-time pressure value above it. The monitoring mechanism mainly consists of a base plate, a lifting plate, a transmission mechanism, and an air cushion 1. In this embodiment, the pressure-plate sensor 3 is embedded in the top surface of the base plate, and the entire base plate is placed on the lower surface of the mattress 13. The pressure-plate sensor 3 senses the pressure changes generated by the elderly person's breathing and body movement during sleep, thereby enabling the system to obtain the sleeper's physiological signs. The processing system in this embodiment can use a conventional sleep monitoring system, which is not an improvement of this application and will not be described further here.

[0025] In this embodiment, typical usage scenarios include... Figure 1 As shown, a lifting platform is installed on each side of the base plate. For scenarios where one side of bed 12 is close to the wall, it can also be set up as follows. Figure 8 The diagram shows a single lifting platform installed on one side of the base plate. The structure of the lifting platform is as follows: Figure 1 and Figure 2 As shown, it mainly consists of a side plate 5 with a top opening and a baffle 6 that slides up and down along the inside of the side plate 5. When the baffle 6 is in its lowest position, a sealed space is still formed between its bottom surface and the inner bottom surface of the side plate 5, and the baffle 6 and the side plate 5 are connected in a sealed sliding connection.

[0026] In this embodiment, the number of transmission mechanisms is the same as that of air cushion 1, and they are arranged accordingly. For example... Figure 5 and 6 As shown, during use, the air mattress 1 is placed entirely along the edge of the bed 12. Combined with... Figure 1 and Figure 2As shown, the transmission mechanism mainly consists of a vertical cylinder 7, a sealing plate 9, and a transmission unit. In this embodiment, the transmission unit is a connecting pipe 11. The cylinder 7 is fixedly installed on the outer wall of the side plate 5. The sealing plate 9 is slidably disposed inside the cylinder 7. The top of the cylinder 7 is connected to the corresponding air cushion 1 through a pipe, and the bottom of the cylinder 7 is connected to the sealing chamber of the lifting plate through the connecting pipe 11. Thus, a sealed chamber is formed between the baffle 6, the side plate 5, the connecting pipe 11, the cylinder 7, and the sealing plate 9. At the same time, a sealed chamber is formed between the part of the cylinder 7 above the sealing plate 9 and the corresponding air cushion 1. When the air cushion 1 is compressed, the gas in the air cushion 1 will push the sealing plate 9 downward. The sealing plate 9 will push the baffle 6 upward along the side plate 5 by compressing the gas below the cylinder 7.

[0027] In this embodiment, when the compressed area of ​​all air cushions 1 is greater than 70% of the total area (the exact value can be obtained from product manufacturing tests), the baffle 6 will be pushed to its highest position, forming a barrier. When the elderly person gets up at night, they sit on the edge of the bed 12. At this time, the compressed area of ​​the air cushions 1 is small, and the baffle 6 rises to a small height, so it will not obstruct the elderly person from getting on and off the bed 12.

[0028] To mitigate the risk of accidental activation caused by multiple people sitting on the bed edge during non-sleep hours, this embodiment adds a solenoid valve 8 assembly to the pipeline connecting each air cushion 1 to the cylinder 7. In daytime mode, the solenoid valve 8 is closed to block airflow, ensuring that pressurized gas in the air cushion 1 cannot enter the cylinder 7, and the baffle 6 remains in a zero-lift state. Simultaneously, the air cushion 1 can still independently function as a cushion. This design precisely differentiates between caregiving scenarios, eliminating the risk of accidental activation during the day while maintaining active protection at night.

[0029] To enable the device to adapt to beds of different sizes and generate a certain clamping force, this embodiment sets the base plate into three parts: a fixed base plate 2, a movable base plate 4, and a spring 20; for example... Figure 1 and Figure 3 As shown, the top and bottom surfaces of the movable base plate 4 and the fixed base plate 2 are on the same plane. A portion of the bottom surface of the movable base plate 4 slides into contact with a portion of the top surface of the fixed base plate 2. The fixed base plate 2 and the movable base plate 4 are connected by a spring-20. During installation, simply lift the mattress 13 upwards so that the side wall of the side plate 5 connected to the end of the fixed base plate 2 fits against the side wall of the bed board 12. Then pull the movable base plate 4 so that the side wall of the side plate 5 connected to the end of the movable base plate 4 fits against the side wall of the bed board 12. The tension of the spring-20 then secures the entire device. After installation, place the mattress 13 on the entire base plate to further improve the stability of the device.

[0030] The control system of this device is integrated into the base plate (not shown in the diagram). The control system can connect to the terminal via existing wireless transmission methods such as Bluetooth. The terminal can receive various physiological signs of the elderly person during sleep from the pressure-type sensor 3. Simultaneously, the solenoid valve 8 can be adjusted via the terminal.

[0031] This device can also be equipped with monitoring components such as cameras and infrared sensors, all of which can be electrically connected to the control system of this device. Data transmission can be done using existing methods, which will not be elaborated here.

[0032] Working Principle: When the device is in night monitoring mode, solenoid valve 8 remains open. If the elderly person's center of gravity shifts to the edge of bed 12 during sleep, causing the pressure area of ​​air cushion 1 to exceed 70% of the total area, pressurized gas is instantly injected into the cylinder 7 chamber through the pipeline, driving the sealing plate 9 to move downwards. Simultaneously, pressurized gas inside cylinder 7 is introduced into the lifting plate sealing cavity, pushing the baffle 6 vertically upwards to the protective height, forming a solid anti-fall barrier. When the elderly person gets up at night, when the local pressure area of ​​air cushion 1 is less than 30% of the total area, the small amount of gas only causes the baffle 6 to rise slightly, allowing unobstructed passage. This device has a purely mechanical reset function; after the protection is released, the caregiver can press down the baffle 6 vertically to simultaneously complete the gas return, requiring no additional operating tools throughout the process.

[0033] Example 2: A sleep monitoring and care device for the elderly, such as Figures 9-12 As shown, the main difference between this embodiment and Embodiment 1 lies in the structure of the transmission unit in the transmission mechanism, such as... Figure 10 As shown, the transmission unit in this embodiment mainly consists of a rack 16, a gear 14, and two connecting plates 15; the top of the rack 16 is fixedly connected to the bottom surface of the sealing plate 9, and the rack 16 passes through the bottom of the cylinder 7 and the fixed base plate 2, and is slidably connected to both the cylinder 7 and the fixed base plate 2. Figure 10 and Figure 11 As shown, both connecting plates 15 are fixed at the bottom of the side plate 5, and the shaft of the gear 14 is connected to the two connecting plates 15 by bearings.

[0034] In this embodiment, the baffle 6 has multiple vertical teeth on the side near the mattress 13, and the baffle 6 is longer than that of the baffle 6 in Embodiment 1. The bottom of the side plate 5 is open, and the entire baffle 6 is disposed inside the side plate 5. The baffle 6 and the side plate 5 are limited by a limiting slider (not shown in the figure). The gear 14 meshes with both the rack 16 and the teeth of the baffle 6, so that when the rack 16 moves downward, the baffle 6 can be driven to move upward under the action of the gear 14.

[0035] This embodiment uses a single-sided integral air cushion 1 (such as...) Figure 12 ), through distributed direct connection ( Figure 12The air cushion 1 is connected to the air unit via a single exhaust port (either a centralized distribution structure or a single connection method) and multiple transmission mechanisms simultaneously. The former allows each transmission mechanism to connect independently to the air cushion 1 interface; the latter connects to the distributor via a single exhaust port on the air cushion 1, distributing pressure equally to the cylinder 7 of each transmission unit through multiple pipelines. It should be clarified that regardless of the connection method used between the air cushion 1 and the transmission mechanism, it is within the scope of protection sought in this application.

[0036] Working principle: If the elderly person's center of gravity shifts to the edge of the bed during sleep, causing the pressure area of ​​the air cushion 1 to exceed 70% of the total area, most of the gas in the air cushion 1 enters the cylinder 7 of each transmission mechanism, causing the rack 16 to move downwards. Under the action of multiple gears 14 and rack 16, the baffle 6 is vertically raised to the protective height, forming a solid anti-fall barrier. When the elderly person gets up at night, when the local pressure area of ​​the air cushion 1 is less than 30% of the total area, due to the friction between the gears 14 and rack 16 of the transmission unit, and the influence of the baffle 6's own weight, a small amount of gas enters the space above the sealing plate 9 in the cylinder 7, forming a slightly increased gas pressure. This gas pressure is insufficient to push the rack 16 downwards, and the baffle 6 will not rise vertically, thus not affecting the elderly person getting in and out of bed 12.

[0037] Example 3: A sleep monitoring and care device for the elderly, such as Figures 13-14 As shown, the main difference between this embodiment and embodiments 1-2 lies in the structure of the transmission mechanism. The transmission mechanism mainly consists of a housing 10, a sliding frame 17, multiple second springs 19, and multiple third springs 18. The second spring 19 is installed inside the side plate 5, and its two ends are fixedly connected to the bottom of the baffle 6 and the bottom of the side plate 5, respectively. In the initial state, the second spring 19 is in a compressed state. The top and bottom surfaces of the housing 10 are open, and the size of the openings matches the cross-sectional size of the baffle 6. The upper and lower through holes of the sliding frame 17 are the same as those of the housing 10, allowing the baffle 6 to pass through smoothly. The third spring 18 is installed inside the housing 10 at the end away from the air cushion 1, and its two ends are fixedly connected to the inner side wall of the housing 10 and the side wall of the sliding frame 17, respectively. When the air cushion 1 is not compressed, the sliding frame 17 is pressed against the end of the housing 10 closest to the air cushion 1 by the elastic force of the third spring 18. At this time, the baffle 6 is completely located in the side plate 5 under the limiting effect of the sliding frame 17, and the second spring 19 is in a compressed state. After the protection is removed, the caregiver presses down the baffle 6 vertically. When the baffle 6 is completely inside the side panel 5, the sliding frame 17 is pushed to the end of the shell 10 near the mattress 13 by the elastic force of the spring 18.

[0038] In this embodiment, when the spring 18 reaches its maximum compression, the upper and lower through slots of the sliding frame 17 are connected to the upper and lower through holes of the housing 10, and the baffle 6 can rise vertically normally and pass through the housing 10 and the sliding frame 17.

[0039] Working principle: If the elderly person's center of gravity shifts to the edge of the bed 12 during sleep, causing the pressure area of ​​the air cushion 1 to exceed 70% of the total area, the resulting air pressure can push the sliding frame 17 along the shell 10 and compress the spring 18 to its maximum compression position. At this time, the upper and lower through slots of the sliding frame 17 are aligned with the upper and lower through holes of the shell 10, and the baffle 6 rises vertically under the elastic force of the spring 19, forming a solid anti-fall barrier. When the elderly person gets up at night, the local pressure area of ​​the air cushion 1 is less than 30% of the total area. The pushing force of the air pressure on the sliding frame 17 is less than the elastic force of the spring 18. This air pressure is insufficient to push the sliding frame 17 to move, and the baffle 6 is still limited by the sliding frame 17 and cannot rise vertically, thus avoiding affecting the elderly person's getting in and out of bed 12.

[0040] It should be clarified that the claims of this application cover all variations of the transmission mechanism that achieve the following core function: when the air cushion 1 is subjected to large-area compression (≥ the threshold determined by product testing), the drive baffle 6 is vertically raised to form a solid protective barrier; when subjected to small-area compression (< the set threshold), the lifting displacement of the baffle 6 is limited to less than the non-intervention height. Any transmission mechanism structure that satisfies this functional logic is within the scope of protection of this application.

[0041] Example 4: A sleep monitoring and care device for the elderly, such as Figures 15-17 As shown, this embodiment provides a new mounting position for the pressure-type sensor 3, specifically by connecting the pressure-type sensor 3 to the air cushion 1 on one side, as follows during use... Figure 17 As shown, the pressure sensor 3 and the air cushion 1 are both placed on the mattress 13.

[0042] In this embodiment, the pressure-type sensor 3 and the single-sided air cushion 1 are placed on the upper surface of the mattress 13. For the soft mattress 13 scenario, this layout ensures that the sensor is separated from the human body by only a single layer of mattress 12 (≤3mm dielectric layer), which improves the intensity of respiratory wave and body movement signal acquisition, while reducing the error of respiratory rate monitoring, and solves the problem of signal attenuation caused by mattress 13 deformation in traditional under-mounted solutions.

[0043] The transmission mechanism structure in this embodiment can adopt any of the structures in Embodiments 1-3.

[0044] It should be clarified that regardless of whether the pressure sensor 3 is installed on the base plate or the air cushion 1, as long as it can monitor the physiological signs of the elderly during sleep, such an arrangement is within the scope of protection of this application.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elderly sleep monitoring and care device, characterized by, The application relates to a sleep monitoring device, which comprises a monitoring mechanism and a pressure sensor, wherein the pressure sensor is installed on the monitoring mechanism and used for sensing the physiological signs of a sleeper. The monitoring mechanism comprises a bottom plate, a lifting plate, a transmission mechanism and an air cushion (1); the lifting plate is fixedly connected with the end of the bottom plate; the transmission mechanism connects the lifting plate with the air cushion (1) and makes the lifting plate vertically lift by the air pressure generated by the air cushion (1).

2. The sleep monitoring and care device for the elderly of claim 1, wherein, The lifting plate comprises a baffle (6) and a side plate (5) with a hollow interior; the baffle (6) is slidingly arranged in the side plate (5); the outer side wall of the side plate (5) is fixedly connected with the end of the fixed bottom plate (2).

3. The sleep monitoring and care device for the elderly of claim 2, wherein, The transmission mechanism comprises a cylinder (7), a sealing plate (9) and a transmission unit; the cylinder (7) is installed on the outer side wall of the side plate (5); the sealing plate (9) is slidingly arranged in the cylinder (7); the top of the cylinder (7) is connected with the air outlet end of the air cushion (1); the transmission unit is connected with the bottom of the cylinder (7) and drives the baffle (6) to move along the height direction of the side plate (5) under the action of the sealing plate (9).

4. The sleep monitoring and care device for the elderly of claim 3, wherein, The transmission unit is a connecting pipe (11); one end of the connecting pipe (11) is communicated with the cavity formed by the side plate (5) and the bottom surface of the baffle (6); the other end of the connecting pipe (11) is connected with the end of the cylinder (7); the sealing plate (9), the cylinder (7), the connecting pipe (11), the baffle (6) and the side plate (5) form a sealed cavity.

5. The sleep monitoring and care device for the elderly of claim 3, wherein, The transmission unit comprises a rack (16), a gear (14) and a connecting plate (15); one end of the rack (16) is fixedly connected with the sealing plate (9) and passes through the bottom of the cylinder (7); the rack (16) is slidingly connected with the cylinder (7); the side of the baffle (6) close to the rack (16) is a tooth surface; the gear (14) is engaged with the baffle (6) and the rack (16) at the same time; the connecting plate (15) is fixedly installed on the bottom of the side plate (5); the shaft center of the gear (14) is rotationally connected with the connecting plate (15).

6. The sleep monitoring and care device for the elderly of claim 4, wherein, The number of the transmission mechanisms and the air cushions (1) is multiple and they are correspondingly connected.

7. The sleep monitoring and care device for the elderly of claim 5, wherein, The number of the transmission mechanisms is multiple and the number of the air cushions (1) is one; the top of the cylinder (7) of the multiple transmission mechanisms is simultaneously connected with the air cushion (1).

8. The sleep monitoring and care device for the elderly of claim 2, wherein, The transmission mechanism comprises a shell (10), a sliding frame (17), a spring two (19) and a spring three (18); the shell (10) is fixedly installed on the top of the side plate (5); the top surface and the bottom surface of the shell (10) are both provided with openings matched with the cross-sectional dimension of the baffle (6); the opening of the sliding frame (17) is matched with the dimension of the baffle (6); the spring three (18) is horizontally arranged in the shell (10); one end of the spring three (18) is fixedly connected with the inner side wall of the shell (10); the other end of the spring three (18) is fixedly connected with the sliding frame (17); the side of the shell (10) away from the spring three (18) is connected with the air outlet end of the air cushion; the spring two (19) is installed in the side plate (5); the top and the bottom of the spring two (19) are respectively fixedly connected with the bottom surface of the baffle (6) and the inner bottom surface of the side plate (5); in the initial state, the sliding frame (17) is located at one end of the shell (10) close to the air cushion (1) under the elastic force of the spring three (18); the baffle (6) is located in the side plate (5) under the action of the sliding frame (17) and makes the spring two (19) in the compressed state.

9. The sleep monitoring and care device for the elderly according to any one of claims 1-8, characterized in that, The bottom plate comprises a fixed bottom plate (2), a movable bottom plate (4) and a spring (20); the fixed bottom plate (2) is slidably connected with the movable bottom plate (4), and two ends of the spring (20) are respectively connected with the fixed bottom plate (2) and the movable bottom plate (4).

10. The sleep monitoring and care device for the elderly according to any one of claims 1-8, characterized in that, The air outlet end of the air cushion (1) is provided with an electromagnetic valve (8).

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