WO2023087745A1

WO2023087745A1 - Health-monitoring mattress and no-load cardiac impact and respiration monitoring system

Info

Publication number: WO2023087745A1
Application number: PCT/CN2022/104779
Authority: WO
Inventors: 娄辉; 王皓
Original assignee: 天津宅美智能科技有限公司
Priority date: 2021-11-22
Filing date: 2022-07-09
Publication date: 2023-05-25
Also published as: CN113925498A

Abstract

A health-monitoring mattress, comprising a mattress body (1), a piezoelectric sensor module and a signal collection board (2), wherein the signal collection board (2) is arranged on the outer portion of the mattress body (1); an inner cavity (27) is provided in the mattress body (1); the sensor module comprises signal wire sockets (3), and sensing strips (4), which are laid on the mattress body (1); the sensing strips (4) are located in the inner cavity (27); there are two groups of sensing strips (4) and signal wire sockets (3), and the sensing strips (4) correspond to the signal wire sockets (3) on a one-to-one basis; and the signal wire sockets (3) are connected to the sensing strips (4). By providing a resistive pressure sensor, the monitoring of a human body pressure signal is realized, and the power supply mode is variable, such that the human body pressure signal can be accurately collected, and the heart rate and the respiratory rate can be calculated.

Description

Health monitoring mattresses and no-load cardiopulmonary and respiratory monitoring systems

technical field

The invention relates to the technical field of human health monitoring, in particular to a health monitoring mattress and a no-load cardiac shock and breathing monitoring system.

Background technique

With the improvement of people's living standards, people pay more and more attention to health. A smart mattress that can monitor human vital signs (such as heart rate and breathing rate) and common diseases (such as atrial fibrillation and apnea) in real time is becoming more and more popular. more popular with users. In addition, for patients and the elderly, it is very easy for patients and the elderly to fail to call for help or call for help in a sudden illness while lying in bed or sleeping, resulting in getting up and falling at night, and failing to receive timely care for emergencies. will be more serious.

technical problem

Existing monitoring of clinical morbidity mostly uses external means such as ECG monitors to monitor vital signs such as heart rate, respiratory rate, blood pressure, blood oxygen, pulse, body temperature, etc. The possibility of parameters being missed, but it is necessary to use contact measurement or real-time monitoring. The patient is connected to cables such as ECG electrodes. Long-term use will cause discomfort to the patient, especially in the process of general measurement or real-time monitoring. The requirements of lying down and lying down are not conducive to long-term measurement or monitoring. For the monitoring of physical signs in the process of elderly care and rehabilitation, it is not suitable for long-term monitoring of external equipment such as electrodes.

Therefore, in view of the above situation, how to improve the existing intelligent mattress or its working method has become an important technical problem to be solved urgently by those skilled in the art.

technical solution

The object of the present invention is to provide an intelligent health monitoring mattress with a simple structure, which can accurately monitor the pressure signal of the human body.

In order to achieve the above object, the present invention adopts the following technical solutions:

The health monitoring mattress includes a mattress body, a piezoelectric sensor module, and a signal acquisition board, the signal acquisition board is arranged outside the mattress body, an inner cavity is provided in the mattress body, and the sensor module includes a signal wiring port and a sensing strip laid on the mattress body, the sensing strip is located in the inner cavity, the sensing strip and the signal connection port are two groups, and the sensing strip and the signal connection port are set in one-to-one correspondence, The signal connection port is connected with the sensing belt, and two sub-signal lines are installed on the signal acquisition board, and the two sub-signal lines are respectively connected with the two signal connection ports, and two sub-signal lines are installed in the inner cavity. An adjustment hidden mechanism.

Preferably, the adjustment concealment mechanism includes a rubber rod installed on the inner wall of the inner cavity, a collar is sheathed on the rubber rod, a plurality of grooves are provided on the upper end of the rubber rod, and a rubber stopper is installed on the rubber rod , the rubber plug is inserted into one of the grooves, and the sensing strip and the signal wiring port are both fixedly connected with the collar.

Preferably, the inner cavity runs through the mattress body left and right, and the two ends of the inner cavity are sealed by zippers.

Preferably, a power cord is connected to the signal acquisition board, and the other end of the power cord is one or a combination of a USB connector and an electric plug.

Preferably, a support plate is installed on the bottom of the mattress body, and two vertical blocks are fixedly connected to the support plate, and a resettable installation rod is rotatably connected between the two vertical blocks, and the installation rod and the Two torsion springs are installed between the support plates, a mounting plate is mounted on the mounting rod, a vertical plate is fixedly connected to the upper end of the mounting plate, a housing is installed on the vertical plate, and the housing and the vertical plate There is an upper and lower buffer mechanism between them, and the signal acquisition board is installed in the housing.

Preferably, the buffer mechanism includes two upper fixing blocks and two lower fixing blocks fixed on the vertical plate, the two lower fixing blocks are respectively located below the two upper fixing blocks, and the upper fixing blocks oppositely arranged A guide rod is fixedly connected between the block and the lower fixed block, and a movable plate is set on the outside of the two guide rods, and the housing is installed on the movable plate. A buffer spring is fixedly connected between them, and the buffer spring is sleeved on the outside of the guide rod.

Preferably, the buffer mechanism includes two upper fixing blocks and two lower fixing blocks fixed on the vertical plate, the two lower fixing blocks are respectively located below the two upper fixing blocks, and the upper fixing blocks oppositely arranged A guide rod is fixedly connected between the block and the lower fixed block, and a movable plate is sheathed on the outside of the two guide rods, and the upper end of the housing is opposed to the movable plate, and two As for the connecting block, two connecting holes are formed on the upper and lower sides of the moving plate, and the two connecting blocks are respectively arranged through the two connecting holes, and two limiting mechanisms are installed on the bottom of the moving plate.

Preferably, the limiting mechanism includes a rectangular frame fixed at the bottom of the moving plate, an insertion rod is slidably connected to the rectangular frame, a side wall of the connection block is provided with a side groove, and the insertion rod is inserted into the side groove, The other end of the insertion rod is fixedly connected with a pull block, and a tension spring is fixedly connected between the pull block and the rectangular frame, and the tension spring is sleeved on the outside of the insertion rod.

The invention also discloses a no-load cardiac impact and respiration monitoring system for a health monitoring mattress, which includes an intelligent terminal, and the intelligent terminal communicates with a signal acquisition board through a serial port.

Preferably, the sleep quality data acquisition of the signal acquisition board specifically includes: detecting heart rate, respiration and body movement by measuring the dynamic pressure of the body acting on the mattress; the pressure sensor captures this weak dynamic pressure, and then can filter to obtain the heart impact BCG Signal, the static pressure filter is removed during signal processing, and the remaining dynamic pressure is filtered to obtain the dynamic pressure changes generated by the body during heartbeat and breathing.

Beneficial effect

1. Through the combination of the signal acquisition board, signal connection port, sensor belt, power line, and mattress body, the structure is reasonable and practical; each group of sensor modules is independent of each other and can complement each other, and can control the sub-signal line Concealment makes the mattress body more beautiful. At the same time, grooves and rubber plugs are set to adjust the position of the sensor belt, which can be applied to users of different heights; specifically, for single-use mattresses, only one set is required. The sensor module is enough; for a mattress used by two people, two sets of sensor modules need to be symmetrically arranged on the mattress; through the one-to-one correspondence detection between the sensor module and the user, it can effectively realize the targeted monitoring of the user and ensure the accuracy of the data sex.

2. Through the present invention, the human body pressure signal can be accurately collected and the heart rate and respiration rate calculated. The actual measurement shows that the heart rate monitoring system of the practical system and the heart rate per minute displayed by the PPG sensor module are only within plus or minus 5. The accuracy rate It can reach 96.3%, which shows that the data of this system is true and reliable.

To sum up, the present invention realizes the monitoring of the human body pressure signal by setting the resistive pressure sensor, and the power supply mode is changeable, which can accurately collect the human body pressure signal and calculate the heart rate and respiration rate. The difference between the heartbeat per minute displayed by the heart rate monitoring system and the PPG sensor module is only within plus or minus 5, and the accuracy rate can reach 96.3%. This result shows that the data of this system is true and reliable.

Description of drawings

Fig. 1 is the structural representation of the health monitoring mattress that embodiment 1 proposes;

Fig. 2 is the structural representation of the health monitoring mattress A place that embodiment 1 proposes

Fig. 3 is the schematic diagram of the health monitoring mattress that embodiment 2 proposes;

Fig. 4 is the structural representation of the health monitoring mattress that embodiment 3 proposes;

Fig. 5 is the structural representation of the health monitoring mattress B place that embodiment 3 proposes;

Fig. 6 is a schematic diagram of the design of the intelligent health monitoring mattress system;

Fig. 7 is a schematic diagram of the position of the sensor belt in the intelligent health monitoring mattress;

Fig. 8 is the algorithm flow chart of the no-load cardiac shock and respiration monitoring system based on the piezoelectric sensor;

Fig. 9 is a schematic diagram of the amplification conversion circuit of the intelligent health monitoring mattress signal acquisition board.

In the figure: 1 mattress body, 2 signal acquisition board, 3 signal connection port, 4 sensor belt, 5 sub-signal line, 6 rubber rod, 7 power cord, 8 groove, 9 support plate, 10 vertical block, 11 twist Spring, 12 vertical plate, 13 upper fixed block, 14 lower fixed block, 15 moving plate, 16 buffer spring, 17 shell, 18 connecting hole, 19 connecting block, 20 side slot, 21 inserting rod, 22 rectangular frame, 23 tension Spring, 24 pull blocks, 25 mounting rods, 26 mounting plates, 27 inner chambers, 28 zippers, 29 collars, 30 rubber plugs.

BEST MODE FOR CARRYING OUT THE INVENTION

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Example 1

Referring to Fig. 1-2, it includes a mattress body 1, a piezoelectric sensor module, and a signal acquisition board 2. The signal acquisition board 2 is set outside the mattress body 1, and an inner cavity 27 is provided inside the mattress body 1, and the inner cavity 27 runs through left and right. Mattress body 1, and the two ends of inner cavity 27 are sealed by zipper 28.

The sensor module includes a signal wiring port 3 and a sensor strip 4 laid on the mattress body 1, the sensor strip 4 is located in the inner cavity 27, the sensor strip 4 and the signal wiring port 3 are two groups, and the sensor strip 4 and The signal connection port 3 is set in one-to-one correspondence, the signal connection port 3 is connected with the sensor belt 4, and two sub-signal lines 5 are installed on the signal acquisition board 2, and the two sub-signal lines 5 are respectively connected with the two signal connection ports 3; Wherein, a power line 7 is connected to the signal acquisition board 2, and the other end of the power line 7 is one or a combination of a USB connector and an electric plug.

The adjustment hidden mechanism includes the rubber rod 6 installed on the inner wall of the inner cavity 27, the rubber rod 6 is provided with a collar 29, the upper end of the rubber rod 6 is provided with a plurality of grooves 8, the collar 29 is equipped with a rubber plug 30, the rubber plug 30 is inserted into one of the grooves 8, the sensing strip 4 and the signal wiring port 3 are fixedly connected with the collar 29, and two adjustment hidden mechanisms are installed in the inner cavity 27.

In this embodiment, through the combination of the signal acquisition board 2, the signal connection port 3, the sensor belt 4, the power cord 7, and the mattress body 1, the structure is set reasonably and the practicability is good; each group of sensor modules is independent of each other and complement each other , and the sub-signal line 5 can be hidden, so that the mattress body 1 is more beautiful, and the groove 8 and the rubber plug 30 are set at the same time, the position of the sensing belt 4 can be adjusted, and it can be applied to users of different heights; specifically, For a mattress used by a single person, only one set of sensor modules needs to be installed; for a mattress used by two people, two sets of sensor modules need to be symmetrically installed on the mattress; through the one-to-one correspondence detection between the sensor module and the user, It can effectively realize the targeted monitoring of users and ensure the accuracy of data.

Example 2

Referring to Fig. 3, the difference between this embodiment and Embodiment 1 is that a support plate 9 is installed on the bottom of the mattress body 1 in this embodiment, and two vertical blocks 10 are fixedly connected to the support plate 9, and between the two vertical blocks 10 There is a resettable mounting rod 25 that is rotatably connected to each other. Two torsion springs 11 are installed between the mounting rod 25 and the support plate 9, and a mounting plate 26 is installed on the mounting rod 25.

The upper end of the mounting plate 26 is fixedly connected with a riser 12, and a housing 17 is installed on the riser 12. An upper and lower buffer mechanism is arranged between the housing 17 and the riser 12. Fixed block 13 and two lower fixed blocks 14, two lower fixed blocks 14 are positioned at the below of two upper fixed blocks 13 respectively, between the upper fixed block 13 that is arranged oppositely and the lower fixed block 14 is fixedly connected with guide bar, two A moving plate 15 is sheathed on the outside of the guide rods.

The casing 17 is installed on the moving plate 15, and the buffer spring 16 is fixedly connected between the moving plate 15, the upper fixed block 13 and the lower fixed block 14, and the buffer spring 16 is set on the outside of the guide rod, and the signal acquisition board 2 is installed on the shell In the body 17, the signal acquisition board 2 can be protected.

In this embodiment, when the user bumps or presses against the housing 17 unintentionally, when the user bumps into the housing 17, the housing 17 drives the moving plate 15, the vertical plate 12 and the mounting plate 26 to rotate, so that the The housing 17 is buffered to protect the signal acquisition board 2 so that it is not easily damaged. Under the action of the torsion spring 11, the mounting board 26 can be reset; if it is pressed on the housing 17, the housing 17 will squeeze The buffer spring 16 moves downward to protect the housing 17, that is, to protect the signal acquisition board 2. Under the action of the torsion spring 11, the downwardly moving housing 17 moves in multiple directions, so that it can The direction of the collision force is changed (rotating with the mounting rod 25 as the axis), so that the housing 17 and the signal acquisition board 2 can be more effectively protected.

Example 3

Referring to Figures 4-5, the difference between this embodiment and Embodiments 1 and 2 is that the buffer mechanism in this embodiment includes two upper fixing blocks 13 and two lower fixing blocks 14 fixed on the riser 12, and the two lower Fixed block 14 is positioned at the below of two upper fixed blocks 13 respectively, is fixedly connected with guide rod between upper fixed block 13 and lower fixed block 14 that are arranged relatively, and the outside of two guide rods is sheathed with mobile plate 15 jointly; Under the cooperation of two guide rods, the moving plate 15 is moved more stably.

The housing 17 is in contact with the upper end of the moving plate 15, and the bottom of the housing 17 is fixedly connected with two connecting blocks 19, and the moving plate 15 is provided with two connecting holes 18 up and down, and the two connecting blocks 19 respectively pass through the two connecting holes 18 set, and the bottom of the moving plate 15 is equipped with two limit mechanisms, the limit mechanism includes a rectangular frame 22 fixed on the bottom of the moving plate 15, the rectangular frame 22 is slidably connected with an insertion rod 21, and the side wall of the connecting block 19 is provided with The side groove 20, the insertion rod 21 is inserted into the side groove 20, the other end of the insertion rod 21 is fixedly connected with a pull block 24, a tension spring 23 is fixedly connected between the pull block 24 and the rectangular frame 22, and the tension spring 23 is sleeved on the insertion rod 21 of the exterior.

In this embodiment, if the signal acquisition board 2 breaks down, the staff can manually pull the pull block 24, so that the insertion rod 21 can be separated from the side groove 20. At this time, the connecting block 19 is no longer limited, so that the housing can be 17 and the signal acquisition board 2 are removed to facilitate its maintenance; the reverse operation can realize the installation, and the installation and disassembly operation is simple and fast, which brings convenience to the staff.

The invention also discloses a no-load cardiac shock and respiratory monitoring system for health monitoring mattresses, including an intelligent terminal, which communicates with the signal acquisition board 2 through a serial port; the sleep quality data acquisition of the signal acquisition board 2 specifically includes: The body acts on the dynamic pressure of the mattress to detect heart rate, respiration and body movement; the pressure sensor captures this weak dynamic pressure, and then filters the heart impact BCG signal. During signal processing, the static pressure filter is removed, and the remaining dynamic pressure is filtered. Obtain the dynamic pressure changes produced by the body during heartbeat and breathing.

As shown in Figure 6, the overall design of the system is divided into three parts: signal acquisition, filter processing, and heartbeat and breathing extraction. The sub-signal line 5 and the signal connection port 3 are sent to the signal acquisition board 2, and then the signal acquisition board 2 sends out the monitor's human physiological signals and human body pressure signals, thus forming the basis of the hardware solution.

The piezoelectric ceramic sensors used form a sensor array according to the spacing and horizontal and vertical positions in Figure 7; the heart rate, respiration and body movement are detected by measuring the dynamic pressure of the body acting on the mattress. Because the left ventricle of the human body pumps blood, it will produce tiny movements from the head to the feet, and then from the feet to the head on the body surface. The pressure sensor captures this weak dynamic pressure, and then filters the heart shock BCG signal. During signal processing, the static pressure filter is removed, and the remaining dynamic pressure is filtered to obtain the dynamic pressure change (waveform) produced by the body during heartbeat and respiration. The algorithm is shown in Figure 8.

As shown in Figure 1, the sensor belt 4 is laid laterally along the mattress, and the sensor belt 4 is laid at the position corresponding to the mattress body 1 and the human chest diaphragm, which can effectively detect the heart rate and respiration rate of the human body when lying flat. physiological signal; at the same time, the signal acquisition board 2 and the signal connection port 3 are arranged on the side wall of the mattress body 1, which can be easily connected to the power supply and easy to install.

In addition, the signal acquisition board 2 is provided with a power cord 7 for connecting to a power source, and the intelligent health monitoring mattress also includes a mobile power supply or a charging plug, which is connected to the signal acquisition board 2 through the power cord 7 . Specifically, when the power line 7 is connected to a mobile power supply, the signal acquisition board 2 can be powered directly through the mobile power supply, and the mobile power supply can be a power bank; After power on, the signal acquisition board 2 is powered.

In summary, the present invention realizes the monitoring of human body pressure signals by setting a resistive pressure sensor in the mattress; at the same time, the present invention shifts the signal acquisition board 2 and the signal connection port 3 to the mattress body 1 through the sub-signal line 5 The side wall is convenient for installation and access to the power supply; in addition, the present invention can flexibly establish the connection between the mobile power supply or the charging plug and the signal acquisition board 2 through the USB connector, and switch the power supply mode.

The peripheral circuit of the signal acquisition board 2 of the present invention is made up of four parts of amplifying conversion circuit, data acquisition circuit, data transmission circuit and power supply; Wherein the amplifying circuit converts the charge quantity of input into voltage quantity, and voltage signal is amplified; The impact signal is very weak, which will cause the change of charge to be very weak, which is easily covered by noise; therefore, the conversion module must use a high-impedance charge amplifier with low bias current as the preamplifier, and adopt a high-sensitivity design to adapt to the impact of the heart Amplification of weak signals.

In addition, the amount of charge output by the piezoelectric film itself is very small, generally lower than the pC value, and the output impedance is very high, reaching above 109Ω, so the pre-op amplifier must choose an amplifier with high input impedance and low bias current, such as AD820, TLC2274, etc. After being converted into a voltage, it is amplified, and then sent to AD sampling after low-pass filtering and high-frequency noise filtering.

Figure 9 is a diagram of the amplification conversion circuit, the sensitivity of the circuit shown is: where Q is the amount of charge generated by the piezoelectric sensor. It can be seen from the formula that the sensitivity is only inversely proportional to the feedback capacitance C, and has nothing to do with other parameters. Since the superimposed signals of heart shock (BCG), respiration, and body motion extracted by the thin-film piezoelectric sensor have a large amplitude range, a comprehensive value needs to be selected for sensitivity. If the sensitivity is too high, the cardiac signal is easy to extract, but the respiratory signal will not be extracted normally due to the saturation of the amplifier; if the sensitivity is too low, although the saturation of the amplifier will be effectively avoided, the cardiac signal will be covered. Therefore, it is necessary to determine the C value according to the size of the thin-film piezoelectric sensor, and 100pF is selected in this experiment. The resistor R forms negative feedback, which can prevent the feedback capacitor C from being charged for a long time and cause the integrated op amp to saturate.

The present invention also proposes a no-load cardiac shock and respiration monitoring system, the algorithm of which is shown in Figure 8. The output of the piezoelectric ceramic sensor pad is three superimposed signals of body movement, respiration and heart shock, as well as circuit noise and interference signals. The original signal must be processed before the desired signal can be separated.

(1) The original signal is greatly affected by the original noise of the circuit, and its frequency will greatly cover the weak signal. Except for the body motion signal, the noise frequency is relatively high, above 50Hz. Therefore, the noise can be removed by low-pass filtering.

(2) Calculation of heart rate and respiration rate is not performed during body movement. Because the frequency of the body motion signal is high and irregular, the amplifier will be saturated, and the cardiac shock signal and respiratory signal cannot be output at this time, and the cardiac shock and respiratory waveforms cannot be extracted.

(3) The frequency range of the BCG signal is [5,20]Hz, the frequency range of the respiratory signal is [0.01,0.5], select the FIR bandpass filter (no recursion, no iteration) to extract the cardiac shock (BCG) waveform and respiratory waveform . The heart rate and respiration rate can be obtained by counting the peaks and peaks of the effective heartbeat and respiration per unit time through binarization of the zero point of the cardiac shock signal and mean value of the respiration signal.

Therefore, the present invention can accurately collect the human body pressure signal and calculate the heart rate and respiration rate. The actual measurement shows that the heart rate monitoring system of the practical system and the heartbeat per minute displayed by the PPG sensor module are only within plus or minus 5. The accuracy rate It can reach 96.3%, which shows that the data of this system is true and reliable.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims

The health monitoring mattress includes a mattress body (1), a piezoelectric sensor module, and a signal acquisition board (2), wherein the signal acquisition board (2) is arranged outside the mattress body (1), and the bed An inner chamber (27) is provided in the mattress body (1), and the sensor module includes a signal wiring port (3) and a sensing strip (4) laid on the mattress body (1), and the sensing strip (4) ) is located in the inner cavity (27), the sensing strip (4) and the signal connection port (3) are two groups, and the sensing strip (4) and the signal connection port (3) are set in one-to-one correspondence, so The signal connection port (3) is connected with the sensor strip (4), and two sub-signal lines (5) are installed on the signal acquisition board (2), and the two sub-signal lines (5) are connected to the two sub-signal lines respectively. The signal wiring ports (3) are connected to each other, and two adjustment and concealment mechanisms are installed in the inner cavity (27).
The health monitoring mattress according to claim 1, characterized in that, the adjustment hidden mechanism includes a rubber rod (6) installed on the inner wall of the inner cavity (27), and a collar is sleeved on the rubber rod (6) (29), the upper end of the rubber rod (6) is provided with a plurality of grooves (8), the collar (29) is equipped with a rubber plug (30), and the rubber plug (30) is inserted into one of the grooves In (8), the sensing strip (4) and the signal wiring port (3) are both fixedly connected to the collar (29).
The health monitoring mattress according to claim 1, characterized in that, the inner cavity (27) runs through the mattress body (1) left and right, and the two ends of the inner cavity (27) are sealed by zippers (28) .
The health monitoring mattress according to claim 1, characterized in that, the signal acquisition board (2) is connected with a power cord (7), and the other end of the power cord (7) is a USB connector, an electric plug one or a combination of.
The health monitoring mattress according to claim 1, wherein a support plate (9) is installed on the bottom of the mattress body (1), and two vertical blocks (9) are fixedly connected to the support plate (9). 10), a resettable installation rod (25) is rotatably connected between the two vertical blocks (10), and two torsion springs (11) are installed between the installation rod (25) and the support plate (9) , a mounting plate (26) is installed on the mounting rod (25), the upper end of the mounting plate (26) is fixedly connected with a vertical plate (12), and a housing (17) is mounted on the vertical plate (12) , The upper and lower buffer mechanisms are arranged between the housing (17) and the riser (12), and the signal acquisition board (2) is installed in the housing (17).
The health monitoring mattress according to claim 5, characterized in that, the buffer mechanism comprises two upper fixing blocks (13) and two lower fixing blocks (14) fixed on the riser (12), two The lower fixed block (14) is respectively positioned under the two upper fixed blocks (13), and a guide rod is fixedly connected between the upper fixed block (13) and the lower fixed block (14) arranged oppositely, and the two fixed blocks The outside of the guide bar is sheathed with a moving plate (15), the housing (17) is installed on the moving plate (15), and the moving plate (15) is connected with the upper fixed block (13) and the lower fixed block ( 14) are fixedly connected with a buffer spring (16), and the buffer spring (16) is sleeved on the outside of the guide rod.
The health monitoring mattress according to claim 5, characterized in that, the buffer mechanism comprises two upper fixing blocks (13) and two lower fixing blocks (14) fixed on the riser (12), two The lower fixed block (14) is respectively positioned under the two upper fixed blocks (13), and a guide rod is fixedly connected between the upper fixed block (13) and the lower fixed block (14) arranged oppositely, and the two fixed blocks The outside of the guide bar is sheathed with a moving plate (15), the housing (17) is against the upper end of the moving plate (15), and the bottom of the housing (17) is fixedly connected with two connecting blocks (19 ), the moving plate (15) is provided with two connecting holes (18) up and down, and the two connecting blocks (19) are set through the two connecting holes (18) respectively, and the moving plate (15) Two limit mechanisms are installed at the bottom.
The health monitoring mattress according to claim 7, characterized in that, the limit mechanism includes a rectangular frame (22) fixed on the bottom of the moving plate (15), and an insertion rod is slidably connected in the rectangular frame (22) (21), the side wall of the connecting block (19) is provided with a side groove (20), the insertion rod (21) is inserted into the side groove (20), and the other end of the insertion rod (21) is fixedly connected with A pull block (24), a tension spring (23) is fixedly connected between the pull block (24) and the rectangular frame (22), and the tension spring (23) is sleeved on the outside of the insertion rod (21).
The no-load cardiac impact and respiration monitoring system for health monitoring mattresses includes an intelligent terminal, and is characterized in that the intelligent terminal communicates with the signal acquisition board (2) through a serial port.
The no-load cardiac impact and respiration monitoring system of a health monitoring mattress according to claim 9, wherein the sleep quality data collection of the signal acquisition board (2) specifically includes: measuring the body's action on the mattress Dynamic pressure detects heart rate, respiration and body movement; the pressure sensor captures this weak dynamic pressure, and then filters the BCG signal of heart shock. During signal processing, the static pressure filter is removed, and the remaining dynamic pressure is filtered to obtain the body when heartbeat and breathing resulting dynamic pressure changes.