A kind of intelligent control leisurely sitting and lying furniture
By designing smart-controlled sitting and sleeping furniture and using a program controller to adjust the bed's swing frequency and amplitude in real time, the problem of poor sleep quality in the existing technology has been solved and a more efficient improvement in sleep quality has been achieved.
Patent Information
- Application Number
- CN202211557916.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-06
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2042-12-06
AI Technical Summary
It is difficult for the prior art to adjust the swing frequency and amplitude of sitting and lying furniture in real time to adapt to different sleep states of human body, resulting in poor sleep quality.
Design an intelligently controlled leisurely sitting and sleeping furniture, which uses components such as a fixed bed, a mattress frame, a lower slide, an upper slide, a fixed track on the ground, a fixed bedside, a movable bedside, and a program controller. Control the movement of the bed and slide, and adjust the swing frequency, amplitude and other sleep environment factors according to the human body's sleep state.
It realizes real-time adjustment of the bed swing according to the human body's physiological rhythm and sleep status, improves sleep quality, and especially provides the effect of quickly falling asleep for people with insomnia.
Smart Images

Figure CN115813142B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of sitting and lying furniture, and in particular to a kind of intelligently controlled leisurely sitting and lying furniture. Background Art
[0002] Studies have found that people's falling asleep is closely related to the frequency and amplitude of bed swinging, and it varies from person to person and from time to time. Heart rate and breathing rate are also related to sleep. For example, children adapt to a faster swinging frequency than adults. The same person also varies in different stages such as just falling asleep, light sleep, deep sleep, and before waking up. The frequency and amplitude of bed swinging need to be adjusted in real time, and it is best to stop swinging when the human body falls into deep sleep. Modern technology allows us to use sleep monitoring to monitor the real-time sleep state of the human body (light sleep, deep sleep, etc.) at all times, and adjust the frequency and amplitude of bed swinging in real time according to the sleep state. At the same time, it is also possible to adjust the posture of the mattress, the temperature of the mattress, the wind speed under the mattress, and adjust the appropriate sound, air, light and electricity factors to create the best conditions for human sleep.
[0003] The human body has physiological rhythms, and setting certain movements according to the human body's rhythms can achieve various effects. For example, if a person lies on a bed or a chair and the bed or chair moves according to a certain trajectory and rhythm, the person can achieve a comfortable or hypnotic effect. Summary of the invention
[0004] To this end, the present invention provides an intelligently controlled leisurely sitting and lying furniture to solve the above-mentioned problems in the prior art.
[0005] In order to achieve the above object, the present invention provides the following technical solutions:
[0006] According to a first aspect of the present invention, a smart controlled leisurely sitting and lying furniture comprises a fixed bed body, a mattress frame, a lower slide, an upper slide, a ground fixed track, a fixed bed head, a movable bed head and a program controller;
[0007] The fixed bed head extending vertically is fixed to one end of the ground fixed track, the fixed bed body is slidably arranged on the ground fixed track, the top surface of the fixed bed body is provided with the arc-shaped lower slide, the bottom of the mattress frame is provided with the arc-shaped upper slide, the upper slide is slidably arranged on the lower slide, and the end of the mattress frame is provided with the movable bed head extending vertically;
[0008] The program controller controls the forward and backward movement of the fixed bed on the ground fixed track, and the program controller controls the forward and backward swing of the upper slide on the lower slide. The safety distance of the forward and backward movement of the fixed bed on the ground fixed track is greater than the unilateral swing amplitude of the forward and backward swing of the upper slide on the lower slide.
[0009] Furthermore, it also includes a sliding roller, and the sliding roller is rotatably connected to the lower front end of the fixed bed body.
[0010] Furthermore, it also includes a driving motor and a steel wire rope, the output shaft of the driving motor is wound with the steel wire rope, both ends of the steel wire rope are respectively connected to the front and rear edges of the mattress frame, and the driving motor is electrically connected to the program controller.
[0011] In addition to the motor-wire rope combination, this design provides another driving method for the swing of the movable bed, namely, a motor and a lead screw combination: including a motor, a ball screw and a lead screw nut (a lead screw rotatable converter); the output shaft of the motor is connected to the ball screw, the lead screw is connected to the rotatable lead screw converter, the motor and the rotatable converter are respectively fixed on the fixed bed and the movable bed, the lead screw rotates forward and reversely to drive the rotatable converter to drive the bed to swing forward and backward, and the motor is electrically connected to the program controller. Either the motor-wire rope drive combination or the motor-screw drive combination can be selected. More driving methods will be discussed later.
[0012] Furthermore, it also includes an operation panel and a speaker, wherein the operation panel and the speaker are both arranged on the side of the movable bedside, and the operation panel and the speaker are both electrically connected to the program controller.
[0013] Furthermore, it also includes a braking module, which is used to control the braking of the fixed bed body and the mattress frame, and the braking module is electrically connected to the program controller.
[0014] Furthermore, it also includes a face recognition sensor, a human posture recognition sensor, a heart rate sensor, a speed sensor, a position sensor and a temperature and humidity sensor; the face recognition sensor, the human posture recognition sensor, the heart rate sensor, the speed sensor, the position sensor and the temperature and humidity sensor are all electrically connected to the program controller.
[0015] Furthermore, a stroke sensor is included, and the stroke sensor is arranged on the side of the upper slideway.
[0016] Furthermore, it also includes a mattress and a bed warming module, the mattress is installed on a mattress frame, and the bed warming module is arranged in the mattress.
[0017] Furthermore, the downward slide is a single-arc slide or a double-arc slide.
[0018] The present invention has the following advantages: utilizing human body rhythm to design intelligently controlled beds and chairs, which can help the human body fall asleep faster or feel comfortable and relaxed; relying on swinging and other auxiliary methods to play a hypnotic role, it is helpful for people with insomnia to fall asleep quickly, and the auxiliary role can be used for leisure and entertainment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the drawings required for the implementation methods or the prior art descriptions are briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0021] Figure 1 An action flow chart of an intelligently controlled leisurely sitting and lying furniture provided in some embodiments of the present invention.
[0022] Figure 2 A structural diagram of a smart-controlled leisurely sitting and lying furniture provided in some embodiments of the present invention.
[0023] Figure 3 A structural diagram of a double-arc slideway of an intelligently controlled leisurely sitting or lying furniture provided in some embodiments of the present invention.
[0024] In the figure: 1, fixed bed body, 2, mattress frame, 3, mattress, 4, slideway group, 5, partition, 6, travel sensor, 7, drive motor, 8, wire rope, 9, lifter, 10, adjustment rod, 11, program controller, 12, fixed bed head, 13, speaker, 14, movable bed head, 15, operation panel, 16, mobile motor, 17, ball screw, 18, screw nut, 19, sliding roller;
[0025] 41. Lower slide, 42. Upper slide, 43. Ground fixed track. DETAILED DESCRIPTION
[0026] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.
[0027] like Figures 1 to 3As shown, a kind of intelligent controlled leisurely sitting and lying furniture in the embodiment of the first aspect of the present invention comprises a fixed bed body 1, a mattress frame 2, a lower slide 41, an upper slide 42, a ground fixed track 43, a fixed bed head 12, a movable bed head 14 and a program controller 11; a fixed bed head 12 extending vertically is fixed at one end of the ground fixed track 43, the fixed bed body 1 is slidably arranged on the ground fixed track 43, an arc-shaped lower slide 41 is arranged on the top surface of the fixed bed body 1, an arc-shaped upper slide 42 is arranged at the bottom of the mattress frame 2, the upper slide 42 is slidably arranged on the lower slide 41, and a movable bed head 14 extending vertically is arranged at the end of the mattress frame 2; the program controller 11 controls the forward and backward movement of the fixed bed body 1 on the ground fixed track 43, the program controller 11 controls the forward and backward swing of the upper slide 42 on the lower slide 41, and the safety distance of the forward and backward movement of the fixed bed body 1 on the ground fixed track 43 is greater than the unilateral swing amplitude of the forward and backward swing of the upper slide 42 on the lower slide 41.
[0028] In the above embodiment, it should be noted that the lower slide 41 and the upper slide 42 together constitute a slide group, a partition 5 is arranged between the top surface of the mattress frame 2 and the mattress 3, and a lifter 9 and an adjustment rod 10 are also arranged on the fixed bed body 1.
[0029] The present application uses modern technology and equipment to invent and create a new type of intelligent motion bed (chair), which allows insomniacs to fall asleep quickly, allowing people to experience again the feeling of swinging and warmth in their mother's arms in their childhood, and also adds a new way for people to experience comfort and leisure.
[0030] The similar products on the market of the intelligent YoYo bed (chair) include: children's rocking beds, rocking chairs, massage beds (chairs) and medical beds (chairs), human-computer interaction robots, cars, etc.
[0031] The intelligent control bed (chair) is not only intelligent furniture, but also an intelligent robot. Its main features are as follows:
[0032] 1. Swing back and forth repeatedly on a curved track or a simulated curved track, similar to the movement of a pendulum; the bed needs to be moved forward to a sufficient swing distance against the wall, then locked, then swung repeatedly, and finally returned to its original position automatically; the chair does not need to be moved if it is not placed against the wall.
[0033] 2. Multiple functions: It can provide functions such as bed swing, backrest reclining, mattress leg lifting, mattress ventilation and heating, human-computer dialogue intelligent control, etc., and cooperate with sound and light to help sleep; it can also provide personalized needs such as entertainment
[0034] 3. High intelligence: It can automatically detect the position and posture of the human body, breathing and heart rate, weight, body temperature, etc., monitor the human body's sleep state (deep sleep and light sleep level), and automatically adjust the swing frequency, amplitude, mattress temperature, bed posture and position according to the sleep process to make corresponding automatic processing.
[0035] 4. Multiple control methods, human body position recognition system and human-computer interaction system: voice, gesture, touch screen control combined with physical button control.
[0036] The different features of intelligent bed and similar products:
[0037] 1. Compared with children's rocking beds: There are only children's rocking beds on the market now, but no adult rocking beds. The present invention is mainly an intelligent rocking bed for adults, and can also be used for children to sleep; Compared with children's rocking beds: Existing children's rocking beds all rock left and right relative to the body of the person lying down (the present invention rocking forward and backward), children's rocking beds have no slides, small beds, no advanced intelligent motion control system, single motion mode, and small swing radius of children's rocking beds, generally not exceeding one meter. The swing radius of the intelligent control bed is generally between 5 meters and 20 meters. After I organized multiple experiments, all experimenters felt that the most comfortable swing radius was between 8 and 18 meters.
[0038] 2. Compared with the massage bed: the massage bed does not swing.
[0039] 3. Compared with medical care beds: medical care beds do not swing.
[0040] 4. Comparison with human-computer interaction robots: This bed is equipped with an intelligent control system, which controls various functions such as the human-computer interaction system and motion control system. It controls the bed body to carry the human body and swing along with the bed (chair), making it easier for people to fall asleep or feel comfortable.
[0041] 5. Difference from cars: This equipment is mainly used for indoor sleeping or leisure and entertainment, and only runs on fixed track lines.
[0042] Swinging: The bed is provided with an arc-shaped slide (or simulated arc-shaped slide - up and down motion superimposed on forward and backward motion), which carries the mattress frame and mattress. The arc track is a section of arc-shaped slats, with an arc length of 1 meter to 3 meters (a pure children's bed is shortened in proportion), which is divided into upper and lower slides. The upper slide slides (or rolls) on the lower slide. The upper slide is fixed to the mattress frame, the mattress frame supports the mattress, and the lower slide is fixed to the bed frame (base). A person is on the mattress on the support, and the human body swings back and forth on the slide with the mattress, so that the upper bed body can carry the human body to achieve an effect similar to the pendulum swinging trajectory; allowing the upper part of the bed (chair) to carry people to make arc movements (swinging back and forth, up and down) on the slide is the most basic creation of the present invention.
[0043] Intelligent control: With intelligent control, the operation is stable and controllable. Intelligent control can collect human sleep information in real time, and based on this, control the mechanical equipment inside the bed to provide the best sleeping conditions for the human body. Including adjusting the movement frequency, amplitude, temperature, humidity, wind speed, light intensity, sound, etc. It realizes multiple functions that are difficult to achieve manually, and does not cause psychological or physiological disturbance to the user.
[0044] like Figure 1 As shown, the working principle of this device is:
[0045] 1. The bed is in the initial state and locked;
[0046] 2. The bed moves forward;
[0047] 3. The bed moves forward along the track for a safe distance (greater than the single-side swing amplitude), and then the lower bed body (base) is locked with the track, and the upper bed body (upper slide and above, the same below) starts to do pendulum motion; the lower slide can be composed of multiple bearings arranged in an arc shape, and an upper pulley can be set to ensure the fit and safety of the upper slide, and a side pulley can be set to prevent the lateral displacement and excessive friction of the upper bed body;
[0048] 4. The upper bed starts to swing to the left, and when it moves to the middle of the left side, the swing amplitude gradually increases and the speed gradually slows down;
[0049] 5. The upper part of the bed moves upward to the maximum position on the left side, the position with the largest swing amplitude, and the speed is zero, and then swings in the opposite direction;
[0050] 6. The upper bed swings down from the highest point on the left to the middle left position, and moves to the lowest position (original position), with the swing amplitude gradually decreasing and the angular velocity gradually increasing;
[0051] 7. The upper bed swings to the lowest position (original position), the swing amplitude is zero, and the angular velocity is maximum;
[0052] 8. The upper bed continues to swing forward (to the right) to the middle of the right side, with the swing amplitude gradually increasing and the speed gradually slowing down;
[0053] 9. The upper bed continues to swing forward (to the right) to the maximum position, the speed decreases to 0, and then returns to perform reciprocating motion.
[0054] At the beginning of the swing of the upper bed, the swing amplitude gradually increases from a small swing to a large amplitude. After several rounds of swinging, it reaches the standard swing amplitude, that is, the maximum swing amplitude, and then continues the standard swing amplitude until the user falls asleep. When stopping, the swing amplitude is gradually reduced from the maximum swing amplitude, and slowly stops by friction and damping to prevent waking up the sleeper. The thrust applied by the swing in the start and stop stages mainly starts the initial movement or stops the movement. After the upper bed swings normally at the maximum swing amplitude, the thrust only plays the role of overcoming the friction and air resistance of the system. The magnitude of the thrust ensures that the movement of the upper bed conforms to the amplitude and frequency of the natural swing of the pendulum under the action of the earth's gravity under vacuum conditions. PLC and motion controller can be used to control the drive equipment, output power according to the relevant function, so that the upper bed maintains a natural movement mode. Such a natural movement trajectory makes the human body feel most comfortable.
[0055] Table 1. Description of bed components.
[0056]
[0057]
[0058]
[0059] like Figure 2 As shown in the figure, a bed structure and a driving method are simply illustrated by taking an electric push rod as an example:
[0060] 1. Simple cross-section diagram of the bed head and bed body: bed head control panel, double-layer bed body;
[0061] 2. The upper slideway of the bed is made of arc-shaped metal, and the lower slideway is arranged with pulleys in an arc corresponding to the upper slideway. The drive adopts a motor as the power to drive the push rod combined with the screw and the transmission conversion device;
[0062] 3. The upper slideway of the bed is made of arc-shaped metal, and the lower slideway is arranged with pulleys in an arc corresponding to the upper slideway. The drive adopts an electric push rod as the driving force, and the push rod is combined with a screw and a transmission conversion device;
[0063] 4. The push rod is combined with the screw and the transmission conversion device. The electric screw push rod drives the bed, which can realize that the push rod screw follows the ups and downs of the bed without interrupting the power output.
[0064] Shaking table swing calculation: PLC controls the motor power output, which is divided into three stages: start, middle (uniform speed), and stop. The magnitude of the power output is mainly to overcome friction and wind resistance. In the middle stage, the power should conform to the natural pendulum motion state under the ideal condition of no friction and wind resistance. The following is an example calculation as follows:
[0065] The bed frame on the swing bed is likened to the pendulum of a clock: the pendulum length L is equivalent to the radius of the pendulum. During the movement of the pendulum, only gravity does work. Using the kinetic energy theorem, the relationship between the linear velocity v and the angular velocity w is v=Lw;
[0066] Assume that the speed of the pendulum at any time is v, and the angle with the vertical direction is α. According to the kinetic energy theorem, we have:
[0067] mgΔh=0.5mv 2 (1);
[0068] Δh=L(cosα-cosθ) (2);
[0069] v = Lw(3);
[0070] The above equations can be solved together to obtain: w = [2gL (cosα - cosθ)] 1 / 2 / L.
[0071] If L = 6.4 meters, θ = 15 degrees, w = (2*9.8*6.4)(cosA-0.966)*0.5* / 6.4 = 9.8*(cosA-0.966)
[0072] When the maximum angle is A = 15 degrees, the calculation list is as follows:
[0073]
[0074] Assume that the horizontal displacement is 650mm*2=1.3 meters, and the horizontal horizontal velocity is 1.3 / 5s / 2=0.52 meters per second (the breathing frequency of an ordinary person in deep sleep is taken as 0.2s). This calculation result provides a basis for the thrust output.
[0075] The smart bed has an independent bed warming system, which is controlled by PLC. Whether you can fall asleep quickly is closely related to the temperature of the quilt. According to research, people are most likely to fall asleep when the quilt temperature is 32℃-34℃. If the quilt temperature is low, it takes a long time to warm it up with body temperature, which not only consumes the body's heat energy, but also makes the cerebral cortex excited after a period of cold stimulation on the human body surface, thus delaying the time of falling asleep or causing shallow sleep. After falling asleep, set the temperature appropriately and ventilate and dry according to personal habits.
[0076] Sleep quality is closely related to the heart rate and breathing of the human body. The best effect can only be achieved if the sleep bed is adjusted according to each person's biorhythm. That is to say, the slide radius of the sleep bed should be customized according to the individual's biorhythm. The calculation list of the relationship between the three is as follows:
[0077] 1. The relationship between fluctuation (vibration) frequency and comfort: The vibration frequency during driving is precisely controlled between 1.05-1.2 Hz, creating a walking rhythm equivalent to 1 Hz when a person takes a walk, which is the best for human body adaptability;
[0078] 2. Respiratory rate: The respiratory rate of adults when calm (including sleeping) is about 16-18 times per minute, and that of children is about 20 times per minute; generally, women breathe 1-2 times faster than men; under normal circumstances, the number of breaths per minute is related to age, health status, labor intensity, etc.
[0079] 3. The relationship between heart rate and comfort. When human body movement is in line with the rhythm of heart rate, human body will feel comfortable. If the exercise frequency can be in line with both breathing rhythm and heart rate, human body comfort will reach the highest peak. If only one can be satisfied, breathing rhythm should be given priority.
[0080]
[0081]
[0082] Adult respiratory rate: supine 14-16 times / min, f=0.25 times / S, normal 8-12 times / min, f=0.13 times-0.2 times / second, 6 times / second during sleep, the respiratory rate during sleep is usually 15-20 times per minute, which is normal; sitting 16-18 times / min; standing 18-20 times / min; resting 15-18 times / min; in line with the average situation of the test, individuals decide the amplitude and frequency based on their own test results.
[0083] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.
[0084] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.
Claims
1. A kind of intelligent controlled leisurely sitting and lying furniture, characterized in that: It comprises a fixed bed body (1), a mattress frame (2), a lower slide (41), an upper slide (42), a ground fixed track (43), a fixed bed head (12), a movable bed head (14) and a program controller (11); The fixed bed head (12) extending vertically is fixed to one end of the ground fixed track (43); the fixed bed body (1) is slidably arranged on the ground fixed track (43); the top surface of the fixed bed body (1) is provided with the arc-shaped lower slide (41); the bottom of the mattress frame (2) is provided with the arc-shaped upper slide (42); the upper slide (42) is slidably arranged on the lower slide (41); and the end of the mattress frame (2) is provided with the movable bed head (14) extending vertically; The calculation formula for the swing period of the mattress frame (2) is as follows: T=1 / f, where T is the swing period and f is the breathing frequency; The calculation formula of the bending radius of the upper slideway (42) is as follows: L = (T / 2π)² × g = T² × 0.2485, where L is the curvature radius of the slide, T is the swing period, and g is the acceleration due to gravity; The program controller (11) controls the forward and backward movement of the fixed bed body (1) on the ground fixed track (43), and the program controller (11) controls the forward and backward swing of the upper slide (42) on the lower slide (41), and the safety distance of the forward and backward movement of the fixed bed body (1) on the ground fixed track (43) is greater than the unilateral swing amplitude of the forward and backward swing of the upper slide (42) on the lower slide (41); It also includes an operation panel (15) and a speaker (13), wherein the operation panel (15) and the speaker (13) are both arranged on the side of the movable bed head (14), and the operation panel (15) and the speaker (13) are both electrically connected to the program controller (11); It also comprises a mattress (3) and a bed-warming module, the mattress (3) being mounted on a mattress frame (2), and the bed-warming module being arranged in the mattress (3); It also includes a braking module, the braking module is used to control the braking of the fixed bed body (1) and the mattress frame (2), and the braking module is electrically connected to the program controller (11); It also includes a face recognition sensor, a human posture recognition sensor, a heart rate sensor, a speed sensor, a position sensor, a temperature and humidity sensor, and a breathing sensor; the face recognition sensor, the human posture recognition sensor, the heart rate sensor, the speed sensor, the position sensor, the temperature and humidity sensor, and the breathing sensor are all electrically connected to the program controller (11); The above sensors can automatically detect the position and posture of the human body, breathing and heart rate, body temperature, monitor the human body's sleeping state, automatically adjust the swing frequency and amplitude according to the breathing frequency, and automatically adjust the mattress temperature and bed posture position according to the sleeping process.
2. The intelligently controlled leisurely sitting and lying furniture according to claim 1, characterized in that: It also comprises a sliding roller (19), and the sliding roller (19) is rotatably connected to the lower front end of the fixed bed body (1).
3. The intelligently controlled leisurely sitting and lying furniture according to claim 2, characterized in that: It also includes a driving motor (7) and a steel wire rope (8), wherein the steel wire rope (8) is wound around the output shaft of the driving motor (7), and the two ends of the steel wire rope (8) are respectively connected to the front and rear edges of the mattress frame (2), and the driving motor (7) is electrically connected to the program controller (11).
4. The intelligently controlled leisurely sitting and lying furniture according to claim 3, characterized in that: It also includes a moving motor (16), a ball screw (17) and a screw nut (18); the moving motor (16) is mounted on the ground fixed track (43), the output shaft of the moving motor (16) is connected to the ball screw (17), the screw nut (18) is fixed on the fixed bed (1), the screw nut (18) is threadedly sleeved on the outer peripheral side of the ball screw (17), and the moving motor (16) is electrically connected to the program controller (11).
5. The intelligently controlled leisurely sitting and lying furniture according to claim 1, characterized in that: It also includes a stroke sensor (6), and the stroke sensor (6) is arranged on the side of the upper slideway (42).
6. The intelligently controlled leisurely sitting and lying furniture according to claim 1, characterized in that: The downward slideway (41) is a single arc slideway or a double arc slideway.
Citation Information
Patent Citations
Oscillating sleep induction bed
CN113677244A
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