TW202317031A - System and method for increasing the measured intensity of the physiological micro-vibration signal - Google Patents

Abstract

The present invention discloses the system and method of increasing the signal strength measured by a ballistocardiogram (BCG) sensor. The method includes: Using the mechanism adjustment to increase the micro-vibration capability of one bed where a BCG sensor is setup to measure BCG signals of a subject on this bed; Adopting the linear mechanism to enhance the micro-vibration strength transmitted to a BCG sensor; Or combining the above two ways to increase the micro-vibration strength transmitted to the location where the BCG sensor is placed. The method enables a BCG sensor and a processor to be applicable to more bed structures for sensing, computing and analyzing the heart rate and other related physiological parameters of a subject on the bed. This increases applicable bed types for measuring related physiological signals using a BCG sensor.

Description

Physiological signal measurement system and method

The present invention is related to the physiological signal measurement system and method at the front end related to the estimation of heart rate, breathing rate and related physiological parameters or sleep parameters, especially the heart rate measured by the ballistocardiogram (BCG) sensor. Systems and methods for shock signal enhancement.

In recent years, as the global demand for long-term care and elderly care has increased, the development of many smart care devices has also attracted attention. Among them, the non-contact measurement device of basic physiological parameters of the human body is an important research and development field. Because it has the advantages of conveniently and comfortably guarding the person being cared for. Among them, the ballistocardiogram (BCG) sensor is one of the non-contact measurement devices for heart rate, respiration rate, physiological parameters related to the human heart and parameters related to sleep quality. It has also received more attention and attention in recent years. research discussion.

In recent years, heart shock signal sensors that have been sold worldwide, such as related products developed and produced by Murata Corporation of Japan (the product module numbers are SCA11H and SCA10H, etc.), can be measured using the company's heart shock signal sensors. Vibration physiological signals are calculated and analyzed by the processor contained in the sensor module, and then transmitted to the computer in a wireless way (such as WiFi) and displayed The heart rate, respiration rate and other relevant physiological parameters of the subject to be tested on the bed; the measured BCG signal, calculated and analyzed heart rate, respiration rate and other relevant physiological parameters can also be obtained through a wired interface (such as a UART interface).

Please refer to the Chinese patent No. CN105447306A, the publication date of which is March 30, 2016, which discloses the acquisition of the micro-vibration signal of the cardiac shock signal sensor, and converts it into an energy signal. By estimating the heartbeat cycle, the heartbeat rate can be obtained.

Please refer to the Chinese patent No. CN108378855A, published on August 10, 2018, which discloses the mechanism design near the heart impact signal sensor, including the mechanism design of the vibration collection panel, conductive sheet, support member, bottom plate, etc. , to improve the sensitivity of the cardiac shock signal system.

Please refer to the Chinese patent No. CN105662424A, published on June 15, 2016, which discloses that the vibration signal caused by cardiac shock can be collected through the vibration collection panel, and transmitted to the extremely low frequency micro-vibration signal sensing through the shockcardiogram signal collection and transmission device device. And it is proposed that the cross-section of the vibration collection panel is circular, rectangular or polygonal, and the conductive sheet is rectangular, circular, or polygonal; or the conductive sheet is hollow rectangular, hollow circular, or hollow polygonal; or conductive The sheet is a structural shape such as a sheet or a column.

Please refer to South Korean Patent No. 10-2009-0104358, the announcement date being October 6, 2009, which discloses a chair-type unconstrained heart shock signal measurement system, which can measure heart shock signals in an unrestrained state. Install the force (weight) sensor to receive the concentrated load, and generate the measurement signal by dispersing the force or weight of the measured person to minimize the energy loss, so as to accurately measure the cardiac shock signal.

See Publication No. USA-2013/0158415A1, dated June 2013 The U.S. patent on March 20 discloses the application of a heart shock signal (BCG) in combination with a traditional electrocardiogram signal (ECG) and a posture measurement sensor in a car seat. The heart shock signal measured during the setting period will be compared with the preset basic pattern. If the basic pattern is suitable for the measured BCG data, the BCG data will be continuously measured and collected, and this data will be used for signal processing. Matching with pattern (pattern matching) to identify the physiological condition of the subject. During the period, the subject's posture is also measured. When the subject's posture changes, it will find and switch to other suitable basic patterns, and then continue to carry out signal processing and pattern matching of the measured BCG data for Continuously identify the physiological condition of the subject.

Please refer to Publication No. USA-2011/0118614A1, the U.S. Patent Publication Date of May 19, 2011 discloses a signal processing method for analyzing BCG, calculates BCG energy over a period of time, and compares it with a reference value, through both The difference between them can be used to obtain the measurement information of arrhythmia. Because it can reflect irregular ventricular contraction force.

Please refer to the Korean patent registration No. 10-1744691, published on June 8, 2017, which discloses a method and device for detecting the heartbeat of a test subject on a bed using a BCG sensor and a signal analysis method. Its declared feature is to use a pre-input detection time interval with a predetermined length, and the peak value of the heart shock signal measured in this time interval can be used as the peak value of heart rate estimation.

Although the above-mentioned patents and BCG-related patents or documents that have been consulted have proposed a variety of methods and systems for estimating heart rate by signal processing including cardiac shock signals; several methods for estimating arrhythmia; erecting and applying cardiac shock signal sensors It is used in general seats, car seats, beds and other devices to estimate their physiological parameters such as heart rate.

The aforementioned South Korean Patent No. 10-2009-0104358 proposes a chair-related special mechanism design to disperse the force or weight of the person being measured, minimize energy loss, and accurately measure cardiac impact Signal method. However, it does not involve the application of the cardiac shock signal sensor to the bed or related methods.

The aforementioned patent No. CN108378855A proposes to improve the sensitivity of the heart shock signal system through the mechanism design near the erection position of the heart shock signal sensor, including the mechanism design of the vibration collection panel, conductive sheet, support member, and bottom plate. The aforementioned patent No. CN105662424A discloses that the vibration signal caused by cardiac shock can be collected through the vibration collection panel, and transmitted to the extremely low frequency micro-vibration signal sensor through the ballistocardiogram signal collection and transmission device. These two patents CN108378855A and CN105662424A both need to use a large-area vibration collection panel and other mechanisms to collect and transmit vibration signals and improve the sensitivity of the cardiac shock signal system.

Experimental tests show that the structure of some beds, the type of bed or the way of fixing the bed will cause the micro-vibration signal to be excessively attenuated, and the cardiac shock signal sensor fixed somewhere on the bed will fail to measure the micro-vibration signal because the micro-vibration signal is too weak. The BCG signal of the test subject on the bed cannot be obtained, and further calculation and analysis can not be used to obtain relevant physiological parameters such as heart rate and breathing rate. However, all the above-mentioned and reviewed previous patent technologies and documents have not directly enhanced the attenuation problem of micro-vibration signals transmitted through the bed structure mentioned in the previous sentence to improve the micro-vibration of the bed to be tested, or proposed to use less and simple styles. Components and appropriate improvement methods. The present invention aims at this problem and proposes to increase the micro-vibration vibrability of the bed to be measured erected by the cardiac shock signal sensor, or to increase the vibration transmitted from the micro-vibration to the erected cardiac shock signal sensor by only a linear mechanism Intensity, or using the above two methods in combination to increase the micro-vibration intensity at the heart shock signal sensor, so as to increase the signal strength measured by the heart shock signal sensor. Further, the structure or the type of the bed applicable to the commercially available heart shock signal sensor can be increased.

The main purpose of the present invention is a system and method for increasing the intensity of the physiological micro-vibration signal obtained by measuring, using a vibrability adjustment unit or a micro-vibration transmission unit to increase the heart impact signal (ballistocardiogram, The BCG) sensor measures the amplitude of the physiological micro-vibration signal generated by the subject on the bed, so that the cardiac shock signal sensor can be applied to more different bed structures, bed types, bed arrangement methods or Depending on the way the bed is fixed, the physiological micro-vibration signals of the subject on the bed can be measured for further calculation and analysis of the subject's heart rate and other physiological parameters and related diseases such as arrhythmia. In order to solve the original structure of the bed, the type of the bed, the way the bed is arranged or the way the bed is fixed, etc., the physiological micro-vibration signal generated by the person to be tested on the bed may be transmitted to the bed to set up a cardiac shock signal sensor The position of the tester, the amplitude has been attenuated to a value that is too small, so that the physiological micro-vibration signal of the subject on the bed cannot be measured, and further calculation and analysis of the subject's heart rate and other physiological parameters related to arrhythmia cannot be performed. disease.

In order to achieve the above-mentioned main purpose of the present invention, the present invention provides a system for increasing the strength of the measured physiological micro-vibration signal, which includes:

(a) a test subject;

(b) a bed on which the subject is placed;

(c) a vibration sensing unit, fixed somewhere on the bed, to measure the physiological micro-vibration signal of the subject on the bed; and

(d) one or more of the following:

More than one vibratory adjustment unit placed at more than one position between the bottom of the bed and the floor set, so as to increase the vibrability of the bed to the micro-vibration signal, so that the amplitude of the micro-vibration signal transmitted from the physiological micro-vibration signal of the subject to the vibration sensing unit increases, and the vibration sensing unit measures the The strength of the physiological micro-vibration signal of the subject is increased, and the measured physiological micro-vibration signal can be used to calculate and analyze the physiological parameters of the subject; and/or

More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted to the vibration sensing unit from the physiological micro-vibration signal of the subject increases, and The strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit is increased, and the measured physiological micro-vibration signal can be used to calculate and analyze the physiological parameters of the subject.

In order to achieve the above-mentioned main purpose of the present invention, the present invention provides a method for increasing the intensity of the physiological micro-vibration signal system obtained by measurement. The system includes the above-mentioned method. The physiological micro-vibration signal of the person to be measured on the bed, and its frequency-domain signal can be obtained, and the spectrum amplitude corresponding to the physiological parameter can be obtained; adjust the vibrability parameter group of the vibrability adjustment unit, and the vibration of the micro-vibration transmission unit transfer the parameter set, and/or adjust the vibrability parameter set of the vibration sensing unit to obtain the set of the above-mentioned parameter set that can obtain the maximum spectral amplitude corresponding to the physiological parameter, and use and place the variable parameter set respectively based on this parameter set Vibration adjustment unit, and/or using and placing the micro-vibration transmission unit, and using and placing the vibration sensing unit, so that the strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit increases, and Measuring the physiological micro-vibration signals of the subject on the bed and calculating and analyzing the physiological parameters of the subject.

In order to achieve the above-mentioned main purpose of the present invention, and shorten the time required for the adjustment of the hardware parameters related to the vibration adjustment unit, the micro-vibration transmission unit, and the vibration sensing unit used in the above-mentioned system and method, the present invention provides an incremental A systemic method for measuring the strength of the obtained physiological micro-vibration signal, the system includes as mentioned above, the method includes the main steps: constructing a micro-vibration dynamics model of the system with software; and applying a simulated physiological micro-vibration signal with the software, To simulate the physiological micro-vibration signal of the subject to be tested; then use software to calculate and analyze the simulated physiological micro-vibration signal transmitted to the micro-vibration signal of the bed that is suitable for placing the vibration sensing unit, and obtain its frequency domain signal , and obtain the frequency spectrum amplitude corresponding to the physiological parameters; then use the software to adjust: the vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or adjust the vibrability of the vibration sensing unit Vibration parameter set; and use the software to find out the above-mentioned parameter set that obtains the maximum spectral amplitude corresponding to the physiological parameter; and use and place the vibrability adjustment unit with this set of parameter sets, and/or use and Place the micro-vibration transmission unit, and use and place the vibration sensing unit to measure the physiological micro-vibration signal of the subject on the bed; The physiological micro-vibration signal can be used to calculate and analyze the physiological parameters of the subject.

In order to achieve the above-mentioned main purpose of the present invention; and shorten the time required for the adjustment of the hardware parameters related to the vibration adjustment unit, the micro-vibration transmission unit, and the vibration sensing unit used in the above-mentioned system and method; and overcome the above-mentioned software simulation method The result and the error generated when the actual hardware system is realized; and/or to further increase the physiological micro-vibration signal strength measured when the actual hardware system is realized, the present invention provides a method for increasing the measured physiological micro-vibration signal strength The method of the system, the system includes as mentioned above, the method includes the main steps: using software to construct the microvibration dynamics model of the system; and using the software to apply a simulated physiological microvibration Vibration signals to simulate the physiological micro-vibration signals of the subject to be tested; then use software to calculate and analyze the simulated physiological micro-vibration signals transmitted to the micro-vibration signals of the bed that are suitable for placing the vibration sensing unit, and obtain other frequency domain signal, and obtain its spectrum amplitude corresponding to the physiological parameters; then use the software to adjust: the vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or adjust the vibration sensing The vibrability parameter set of the unit; and use the software to find out the above-mentioned parameter set that obtains the largest spectrum amplitude corresponding to the physiological parameter; and use and place the vibrability adjustment unit with this set of parameter sets, and/ Or use and place the micro-vibration transmission unit, and use and place the vibration sensing unit to measure the physiological micro-vibration signal of the subject on the bed, and obtain its frequency domain signal, and obtain its corresponding physiological The frequency spectrum amplitude of the parameter; then adjust the above parameter group slightly in the hardware of the system until the obtained maximum spectrum amplitude corresponding to the physiological parameter has reached or exceeded the set critical value; then use this group of parameter groups respectively with placing the vibrability adjustment unit, and/or using and placing the micro-vibration transmission unit, and using and placing the vibration sensing unit to measure the physiological micro-vibration signal of the subject on the bed to increase the vibration The physiological micro-vibration signals of the subject on the bed measured by the sensing unit can be used to calculate and analyze the physiological parameters of the subject.

100, 600, 700, 800, 900, 1000, 1100: bed

101, 601: Subjects to be tested

102, 602, 702, 802, 902, 1002, 1102: cardiac shock signal sensor

111, 112, 113, 114, 911, 912, 913, 914, 1011, 1012, 1013, 1014, 1111, 1112, 1113, 1114: Elevator

621, 721, 722, 821, 822, 823, 921, 1021, 1022, 1121, 1122, 1123: linear mechanism

Embodiments of the present invention are described in the following simple descriptions in conjunction with the drawings:

FIG. 1 is a schematic diagram of a system using a vibrability adjustment unit to enhance the amplitude of micro-vibration measured by a cardiac shock signal sensor.

Fig. 2 is a flow chart of a method for enhancing the amplitude of micro-vibrations measured by a cardiac shock signal sensor.

Figure 3 is the method of adding the software simulation calculation to the micro-vibration amplitude measured by the enhanced cardiac shock signal sensor flow chart.

Figure 4 is the frequency spectrum of the micro-vibration amplitude (BCG signal) measured by the sensor before and after the micro-vibration is enhanced.

Figure 5 is the frequency spectrum of the micro-vibration amplitude (BCG signal) measured by the sensor before and after the micro-vibration is enhanced after the software simulation calculation adjustment.

FIG. 6 is a schematic diagram of a system that uses a single linear mechanism to enhance the vibration intensity of cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

FIG. 7 is a schematic diagram of a system that uses two sets of linear mechanisms to enhance the vibration intensity of cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

8 is a schematic diagram of a system that uses three sets of linear mechanisms to enhance the vibration intensity of cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

FIG. 9 is a schematic diagram of a system that uses a vibratory adjustment unit and a single linear mechanism to enhance the vibration intensity of the cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

FIG. 10 is a schematic diagram of a system that uses a vibratory adjustment unit and two sets of linear mechanisms to enhance the vibration intensity of the cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

FIG. 11 is a schematic diagram of a system using a vibratory adjustment unit and three sets of linear mechanisms to enhance the vibration intensity of cardiac shock micro-vibration transmitted to the cardiac shock signal sensor.

The main purpose of the system and method of the present invention is to increase the amplitude of the micro-vibration signal where the heart shock signal sensor is erected at a certain position on the bed, so as to increase the application of the ballistocardiogram (BCG) sensor to more Different bed structures, bed materials, different arrangements of the bed, or different fixing methods of the bed can measure the heart rate of the person to be tested on the bed. The pulse signal, the physiological parameters such as the heartbeat rate estimated from the cardiac shock signal, and related diseases such as arrhythmia. In other words, through the system and method of the present invention, the scope of application of the shock signal sensor can be enlarged.

In order to achieve the above object, the implementation of the system and several methods proposed by the present invention are described as follows: As shown in Figure 1, a heart impact signal sensor 102 is used, fixed at a certain position on the bed 100, to measure the static lying Heart shock signal (or micro-vibration signal generated by respiration) of the subject 101 on the bed. The actual situation may be due to factors such as the structure, material, arrangement or different fixing methods of the bed 100, which may cause the micro-vibration signal to be measured (time-domain signal, that is, vibration signals at different times) to be transmitted to the cardiac shock signal sensor The sensor 102 is already too weak, which is close to the intensity of the background noise, so that the cardiac shock signal sensor 102 cannot detect the cardiac shock signal of the subject 101.

In order to overcome the above problems, the first method proposed by the present invention is a micro-adjustment method of the mechanism, which refers to the use of a vibratory adjustment unit (device), including the use of more than one riser, such as 111, 112, 113, 114 has four risers altogether. The detailed process of this method is as shown in Figure 2, including the following steps.

(1) First use the sensor to capture the physiological micro-vibration signal generated by the person lying still on the bed and transmit it to the time-domain vibration signal of the sensor placed on the edge of the bed, under the bed or the bed frame, and obtain its frequency-domain signal . And obtain the amplitude Mag ₁ of the frequency domain (spectrum) signal corresponding to the heartbeat and respiration rate of the subject 101 lying on the bed.

Let Mag _max = Mag ₁ , p _sensor = p ₁ ,

Where p ₁ is the current location of the shock sensor 102 .

(2) By adjusting the size (length, width, height, shape, etc.), quality, density, position, angle, coefficient of friction between the raised object and the floor, and the friction coefficient between the raised object and the bed by adjusting the size (length, width, height, shape, etc.) And other parameters; and can adjust the size (length, width, height, shape, etc.), quality, density, position, angle, fixing method and other parameters of the sensor placed on the edge of the bed, under the bed or the bed frame.

(3) Measuring the vibration signal in the time domain by using the above sensor again, and obtaining the signal in the frequency domain. And obtain the amplitude Mag ₂ of the frequency domain (spectrum) signal corresponding to the heartbeat and respiration rate of the subject lying on the bed.

If Mag ₂ > Mag _max ,

Then let Mag _max = Mag ₂ , p _sensor = p ₂ ,

Where p ₂ is the adjusted position of the shock sensor 102 .

(4) Check whether the amplitude of the above-mentioned frequency domain (spectrum) signal has reached the set critical value (as shown in Figure 4)?

If the set critical value is not reached, repeat the above steps (2), (3) and (4);

If the set critical value has been reached, proceed to the following step (5).

(5) The dimensions (length, width, height, shape, etc.), mass, density, position, angle, coefficient of friction between the raised object and the floor, and the friction coefficient between the raised object and the bed and other parameters, as well as the frequency domain (spectrum) signal amplitude Mag _max is the largest position p _sensor to set up a fixed sensor (the sensor parameter is the group that obtains Mag _max as above), and measure the heartbeat and breathing rate of the person to be tested on the bed Measurement.

The frequency spectrum of the cardiac shock signal measured before and after the above method of adjusting the parameters of the elevated object is shown in Figure 4. After using this method, the cardiac shock signal sensor 102 can measure the spectrum of the cardiac shock signal of the subject 101 Increase to usable range. In order to further calculate and analyze the physiological parameters such as the heart rate of the subject 101, sleep quality related parameters and arrhythmia and other related diseases of the subject 101 based on the cardiac shock signal; the measured signal can also be further analyzed for the breathing rate or other breathing related physiological parameters, etc. .

The present invention includes a system for increasing the strength of the measured physiological micro-vibration signal, which includes:

(a) a test subject;

(b) a bed on which the subject is placed;

(c) a vibration sensing unit, fixed somewhere on the bed, to measure the physiological micro-vibration signal of the subject on the bed; and

(d) one or more of the following:

More than one vibratory adjustment unit is placed at more than one position between the bottom of the bed and the floor, so as to increase the vibrability of the bed to the micro-vibration signal, so that the physiological micro-vibration signal of the subject is transmitted to the vibration The amplitude of the micro-vibration signal at the sensing unit increases, and the strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit increases, and can Use the measured physiological micro-vibration signals to calculate and analyze the physiological parameters of the subject; and/or

More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted to the vibration sensing unit from the physiological micro-vibration signal of the subject increases, and The strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit is increased, and the measured physiological micro-vibration signal can be used to calculate and analyze the physiological parameters of the subject.

The vibration sensing unit of the present invention may include one or more selected from the following: a ballistocardiogram sensor (BCG sensor), a vibration sensor, a micro-vibration sensor, a plurality of Cardiac shock signal sensor, multiple vibration sensors, multiple micro-vibration sensors, vibration sensors in more than one direction, micro-vibration sensors in more than one direction, multiple vibration sensors in more than one direction sensor, or a plurality of micro-vibration sensors in more than one direction.

The second method of the present invention is as follows, comprising the following implementation steps:

(1) Use software to construct a system model of the bed, several raised objects, and the physiological micro-vibration signals generated by lying on the bed with people.

(2) Using software calculations in the model established above, the simulated applied physiological micro-vibration signal is transmitted to the time-domain vibration signal placed on the edge of the bed, under the bed or the bed frame, etc., which are suitable for placing sensors within the scope of the sensor, And get its frequency domain signal.

(3) Then repeatedly adjust the parameter set to obtain the best micro-vibration signal parameter set through simulation calculation, and implement the first method above.

The process flow of the second method of the present invention is organized as shown in FIG. 3 . Mainly use software to establish the mechanical model of the entire cardiac shock signal sensor on the bed application system (such as the entire system in Figure 1), and use software simulation to calculate the best

The size (length, width, height, shape, etc.), quality, density, position, angle, coefficient of friction between the raised object and the floor, and the friction coefficient between the raised object and the bed, etc.; The size (length, width, height, shape, etc.), quality, density, position, angle, fixing method and other parameter values of the impact signal sensor 102 placed on the edge of the bed, under the bed or the sensor of the bed frame, and This makes it possible to set up the overall system by using the parameter group values obtained from the above-mentioned simulation calculations, and measure the available heart shock signal spectrum greater than the preset critical value with the erected heart shock signal sensor 102 . For example, it is shown in the spectrum signal curve of the simulated calculation value in Fig. 5 . The first method of the present invention can then be incorporated again. In order to shorten the time needed to find the values of the system parameters (listed above) that exceed the preset critical value of the spectrum of the cardiac shock signal.

The frequency spectrum of the heart shock signal measured before and after the second method of the present invention is shown in Figure 5. After using this method, the heart shock signal sensor 102 can increase the frequency spectrum of the heart shock signal of the subject 101. to the usable range.

The third method of the present invention refers to the use of a micro-vibration transmission device, which is described in detail with the following examples.

For example, as shown in Figure 6, use a linear mechanism 621 (a micro-vibration transmission device), which is fixed on the bed and connected to the heart impact signal sensor 602, so as to enhance the heart impact micro-vibration signal generated by the subject 601 and transmit it to the heart. The micro-vibration amplitude of the shock signal sensor 602 (that is, to increase the signal-to-noise ratio SNR in the time domain, that is, to increase the amplitude of the spectrum signal corresponding to the signal in the frequency domain).

Another embodiment of the third method of the present invention is shown in Figure 7, using two sets of linear mechanisms 721 and 722, fixed on the bed, and connected to the heart shock signal sensor 702, so as to enhance the heart shock produced by the subject The micro-vibration signal is transmitted to the shock signal sensor 702 for micro-vibration amplitude. In FIG. 7 , for the sake of convenience, the subject on the bed 700 is not drawn.

The third embodiment of the third method of the present invention is shown in FIG. 8, using three sets of linear mechanisms 821, 822 and 823, fixed on the bed, and connected to the cardiac shock signal sensor 802, so as to enhance the testee's generation The heart shock micro-vibration signal is transmitted to the heart shock signal sensor 802 for micro-vibration amplitude. In FIG. 8 , for the sake of convenience, the person to be tested on the bed 800 is not drawn.

The fourth method of the present invention is illustrated with the following six examples.

For example, as shown in FIG. 9 , the above-mentioned third method of the present invention is used in combination with the above-mentioned first method. That is to use a line-type mechanism 921 (a micro-vibration transmission device), fixed on the bed, and connected to the cardiac shock signal sensor 902; and combined with more than one riser 911, 912, 913, 914; can be used in combination similar to the aforementioned The process of Fig. 2 is implemented, but a linear mechanism 921 can be added. In the step of adjusting the parameter value in Fig. 2, the parameter group related to the linear mechanism and vibration transmission or/and shockability can be added to increase the parameter value adjustment in Fig. 2 The number of parameters can be adjusted to achieve increased cardiac shock signal The micro-amplitude signal strength measured by the sensor 902 . In FIG. 9 , for the sake of convenience, the person to be tested on the bed 900 is not drawn.

The above embodiment shown in FIG. 9 can also be implemented in combination with the above third method of the present invention and the above second method. That is to use a line-type mechanism 921 (a micro-vibration transmission device), fixed on the bed, and connected to the cardiac shock signal sensor 902; and combined with more than one riser 911, 912, 913, 914; can be used in combination similar to the aforementioned The process of Fig. 3 is implemented, but the mechanism model of the linear mechanism 921 can be added to the model established in Fig. 3, and in the step of adjusting the parameter value, the parameter group related to the linear mechanism and vibration transmission or/and shockability can be added , so as to increase the number of adjustable parameters when adjusting the parameter values in FIG.

Another embodiment of the system is shown in FIG. 10 , which is implemented by using the above-mentioned third method of the present invention in combination with the above-mentioned first method. That is, two sets of linear mechanisms 1021 and 1022 are used, fixed on the bed, and connected to the cardiac shock signal sensor 1002; and combined with more than one riser 1011, 1012, 1013, 1014; a flow similar to the aforementioned Figure 2 can be used in combination Implementation, but two sets of linear mechanisms 1021 and 1022 can be added in the step of adjusting parameter values in Figure 2, and these two sets of linear mechanisms and vibration transmission or/and shockability related parameter groups can be added to increase the parameter value adjustment in Figure 2 The number of adjustable parameters is to increase the micro-amplitude signal strength measured by the shock signal sensor 1002. In FIG. 10 , for the sake of convenience, the subject on the bed 1000 is not drawn.

Figure 10 of the above-mentioned embodiment can also be used in combination with the above-mentioned third method of the present invention and the aforementioned The second method implementation. That is, two sets of linear mechanisms 1021 and 1022 are used, fixed on the bed, and connected to the cardiac shock signal sensor 1002; and combined with more than one riser 1011, 1012, 1013, 1014; a process similar to the aforementioned Figure 3 can be used in combination Implementation, but the mechanism models of two sets of linear mechanisms 1021 and 1022 can be added to the model established in Figure 3, and in the step of adjusting parameter values, the parameters related to vibration transmission or/and shockability of these two sets of linear mechanisms can be added group, so as to increase the number of adjustable parameters when adjusting the parameter values in FIG.

Yet another embodiment of the system is shown in FIG. 11 , which is implemented by using the above-mentioned third method of the present invention in combination with the above-mentioned first method. That is to use three sets of linear mechanisms 1121, 1122 and 1123, fixed on the bed, and connected to the cardiac shock signal sensor 1102; and combined with more than one riser 1111, 1112, 1113, 1114; can be used in combination similar to the aforementioned Figure 2 However, three sets of linear mechanisms 1121, 1122 and 1123 can be added. In the step of adjusting parameter values in Figure 2, these three sets of linear mechanisms and vibration transmission or/and shockability-related parameter groups can be added to increase Figure 2. The number of parameters can be adjusted when parameter values are adjusted, so as to increase the strength of the micro-amplitude signal measured by the shock signal sensor 1102 . In FIG. 11 , for the sake of convenience, the subject on the bed 1100 is not drawn.

The above embodiment shown in FIG. 11 can also be implemented by combining the third method of the present invention with the second method above. That is to use three sets of linear mechanisms 1121, 1122 and 1123, fixed on the bed, and connected to the cardiac shock signal sensor 1102; and combined with more than one riser 1111, 1112, 1113, 1114; can be used in combination similar to the aforementioned Figure 3 implementation of the process, but the mechanism models of three groups of linear mechanisms 1121, 1122 and 1123 can be added to the model established in Figure 3, and the number of parameters can be adjusted In the value step, these three groups of linear mechanisms and vibration transmission or/and shockability related parameter groups are added to increase the number of adjustable parameters when adjusting the parameter values in Figure 3, so as to increase the number of parameters measured by the heart impact signal sensor 1102. The obtained micro-amplitude signal strength.

Those who are familiar with the technology of the present invention should clearly understand that the present invention is not limited to the details of the above-mentioned illustrative embodiments. The present invention can be implemented in other specific forms without departing from the essential attributes of the present invention. To limit the present invention, the present invention is based on the scope of the patent application rather than the above description, and all modifications within the meaning of the scope of the patent application and the equivalent scope belong to the scope of the present invention.

100: bed

101: Subject to be tested

102: Vibration sensing unit

111, 112, 113, 114: vibration adjustment unit

Claims (20)

A system for increasing the strength of the measured physiological micro-vibration signal, comprising: (a) a test subject; (b) a bed on which the subject is placed; (c) a vibration sensing unit, fixed somewhere on the bed, to measure the physiological micro-vibration signal of the subject on the bed; and (d) one or more of the following: More than one vibratory adjustment unit is placed at more than one position between the bottom of the bed and the floor, so as to increase the vibrability of the bed to the micro-vibration signal, so that the physiological micro-vibration signal of the subject is transmitted to the vibration The amplitude of the micro-vibration signal at the sensing unit is increased, and the strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit is increased, and the measured physiological micro-vibration signal can be used for calculation and analysis The physiological parameters of the subject; and/or More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted to the vibration sensing unit from the physiological micro-vibration signal of the subject increases, and The strength of the physiological micro-vibration signal of the subject measured by the vibration sensing unit is increased, and the measured physiological micro-vibration signal can be used to calculate and analyze the physiological parameters of the subject. A method for increasing the strength of a system for measuring physiological micro-vibration signals, the system comprising: a subject to be tested; A bed, the subject is on the bed; A vibration sensing unit, fixed at a certain place on the bed, to measure the Physiological micro-vibration signals; and One or more of the following: More than one vibrability adjustment unit is placed at more than one position between the bottom of the bed and the floor, so as to increase the vibrability of the bed to micro-vibration signals; and/or More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted from the subject's physiological micro-vibration signal to the vibration sensing unit is increased; The method consists of steps: (a) Use the vibration sensing unit to initially measure the physiological micro-vibration signal of the subject on the bed, and obtain the frequency domain signal, and obtain the spectrum amplitude corresponding to the physiological parameter; (b) adjust one or more of the following: The vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or the vibrability parameter set of the vibration sensing unit; (c) Use the vibration sensing unit to measure the physiological micro-vibration signal of the subject on the bed again, and obtain its frequency domain signal, and obtain its spectrum amplitude corresponding to the physiological parameter, and record it so far Obtain the set of vibrability parameter sets of the vibrability adjustment unit, and/or the vibration transmission parameter set of the micro-vibration transmission unit, and the vibrability parameter set of the vibration sensing unit of the group corresponding to the maximum frequency spectrum amplitude of the physiological parameter; (d) repeat steps (b) and (c) until the maximum frequency spectrum amplitude corresponding to the physiological parameter described in step (c) has reached or exceeded the set critical value; (e) using the vibrability parameter set of the set of vibrability adjustment units and/or the vibration transmission parameter set of the micro-vibration transmission unit that obtains the largest spectral amplitude corresponding to the physiological parameters described in step (d), and the vibrability parameter set of the vibration sensing unit, using and placing the vibrability adjustment unit, and/or using and placing the micro-vibration transfer unit, and using and placing the vibration sensing unit, respectively, to measure the Physiological micro-vibration signals of the subject on the bed; and (f) Using the physiological micro-vibration signals measured in step (e) to calculate and analyze the physiological parameters of the subject. A method for increasing the strength of a system for measuring physiological micro-vibration signals, the system comprising: a subject to be tested; A bed, the subject is on the bed; a vibration sensing unit, fixed somewhere on the bed, to measure the physiological micro-vibration signal of the subject on the bed; and One or more of the following: More than one vibrability adjustment unit is placed at more than one position between the bottom of the bed and the floor, so as to increase the vibrability of the bed to micro-vibration signals; and/or More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted from the subject's physiological micro-vibration signal to the vibration sensing unit is increased; The method consists of steps: (a) Use software to construct a microvibration dynamics model of the system; (b) Use the software to apply a simulated physiological micro-vibration signal to simulate the physiological micro-vibration signal of the subject, and then use the software to calculate and analyze the simulated physiological micro-vibration signal and transmit it to the bed that is suitable for placing the vibration sensation. The micro-vibration signal of the position of the measuring unit can be obtained, and its frequency domain signal can be obtained, and its corresponding Spectrum amplitude corresponding to physiological parameters; (c) use the software to adjust one or more of the following: The vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or the vibrability parameter set of the vibration sensing unit; (d) Use the software to recalculate and analyze the simulated physiological micro-vibration signals transmitted to the micro-vibration signals of the bed suitable for placing the vibration sensing unit, and obtain the frequency domain signals, and obtain the corresponding physiological parameters and record the vibrability parameter set of the vibrability adjustment unit and/or the vibration transmission parameter set of the micro-vibration transmission unit, as well as the vibration sensation Vibration parameter set of the measuring unit; (e) repeat steps (c) and (d) until the maximum frequency spectrum amplitude corresponding to the physiological parameter described in step (d) has reached or exceeded the set critical value; (f) using the vibrability parameter set of the set of vibrability adjustment units and/or the vibration transmission parameter set of the micro-vibration transmission unit that obtains the largest spectral amplitude corresponding to the physiological parameters described in step (e), and The vibrability parameter set of the vibration sensing unit, respectively using and placing the vibrability adjustment unit, and/or using and placing the micro-vibration transmission unit, and using and placing the vibration sensing unit, to measure the bed The physiological micro-vibration signal of the subject; and (g) Using the physiological micro-vibration signals measured in step (f) to calculate and analyze the physiological parameters of the subject. A method for increasing the strength of a system for measuring physiological micro-vibration signals, the system comprising: a subject to be tested; A bed, the subject is on the bed; a vibration sensing unit, fixed somewhere on the bed, to measure the physiological micro-vibration signal of the subject on the bed; and One or more of the following: More than one vibrability adjustment unit is placed at more than one position between the bottom of the bed and the floor, so as to increase the vibrability of the bed to micro-vibration signals; and/or More than one micro-vibration transmission unit is placed somewhere on the bed and connected to the vibration sensing unit, so that the amplitude of the micro-vibration signal transmitted from the subject's physiological micro-vibration signal to the vibration sensing unit is increased; The method consists of steps: (a) Use software to construct a microvibration dynamics model of the system; (b) Use the software to apply a simulated physiological micro-vibration signal to simulate the physiological micro-vibration signal of the subject, and then use the software to calculate and analyze the simulated physiological micro-vibration signal and transmit it to the bed that is suitable for placing the vibration sensation. The micro-vibration signal at the position of the measurement unit can be obtained, and its frequency domain signal can be obtained, and its spectrum amplitude corresponding to the physiological parameter can be obtained; (c) use the software to adjust one or more of the following: The vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or the vibrability parameter set of the vibration sensing unit; (d) Use the software to recalculate and analyze the simulated physiological micro-vibration signals transmitted to the micro-vibration signals of the bed suitable for placing the vibration sensing unit, and obtain the frequency domain signals, and obtain the corresponding physiological parameters and record the vibrability parameter set of the vibrability adjustment unit and/or the vibration transmission parameter set of the micro-vibration transmission unit, as well as the vibration sensation Vibration parameter set of the measuring unit; (e) repeat steps (c) and (d) until the maximum frequency spectrum amplitude corresponding to the physiological parameter described in step (d) has reached or exceeded the set critical value; (f) using the vibrability parameter set of the set of vibrability adjustment units and/or the vibration transmission parameter set of the micro-vibration transmission unit that obtains the largest spectral amplitude corresponding to the physiological parameters described in step (e), and The vibrability parameter set of the vibration sensing unit, respectively using and placing the vibrability adjustment unit, and/or using and placing the micro-vibration transmission unit, and using and placing the vibration sensing unit, to measure the bed The physiological micro-vibration signal of the subject to be measured, and its frequency domain signal can be obtained, and its spectrum amplitude corresponding to the physiological parameter can be obtained; (g) adjust one or more of the following: The vibrability parameter set of the vibrability adjustment unit, the vibration transmission parameter set of the micro-vibration transmission unit, and/or the vibrability parameter set of the vibration sensing unit; (h) Use the vibration sensing unit to measure the physiological micro-vibration signal of the subject on the bed again, and obtain its frequency domain signal, and obtain its spectrum amplitude corresponding to the physiological parameter, and record it so far Obtain the set of vibrability parameter sets of the vibrability adjustment unit, and/or the vibration transmission parameter set of the micro-vibration transmission unit, and the vibrability parameter set of the vibration sensing unit of the group corresponding to the maximum frequency spectrum amplitude of the physiological parameter; (i) repeat steps (g) and (h) until the maximum frequency spectrum amplitude corresponding to the physiological parameter described in step (h) has reached or exceeded the set critical value; (j) using the vibrability parameter set of the set of vibrability adjustment units and/or the vibration transmission parameter set of the micro-vibration transmission unit that obtains the largest spectral amplitude corresponding to the physiological parameters described in step (h), and The vibrability parameter set of the vibration sensing unit, using and placing the vibrability adjustment unit, and/or using and placing the micro-vibration transmission unit, and using and placing the vibration sensing unit, respectively, to measuring the physiological micro-vibration signal of the subject on the bed; and (k) Using the physiological micro-vibration signals measured in step (j) to calculate and analyze the physiological parameters of the subject. The vibrability parameter set of the vibrability adjustment unit according to any one of claims 2 to 4 may include one or more of each of the vibrability adjustment units selected from the following: Size, shape, appearance, structure, material, quality, density, placement position, placement angle, fixing method, coefficient of friction between the vibratory adjustment unit and the floor, and/or the vibration adjustment unit and the bed coefficient of friction between them. The vibrability parameter set of the vibration sensing unit as described in any one of claims 2 to 4 may include one or more of each of the vibration sensing units selected from the following: Size, shape, appearance, structure, material, quality, density, placement position, placement angle, fixing method, and/or the way the vibration sensing unit is fixed on the bed. The vibration transmission parameter set of the micro-vibration transmission unit as described in any one of claims 2 to 4 may include one or more of each of the micro-vibration transmission units selected from the following: Size, shape, appearance, structure, material, quality, density, placement position, placement angle, fixing method, and/or the way the micro-vibration transmission unit is fixed on the bed. The physiological parameter as described in any one of claims 1 to 4, wherein the physiological parameter includes one or more of the following: Heart rate, breathing rate, sleep quality and/or irregular heartbeat. The vibration sensing unit as described in any one of claims 1 to 4 may include one or more selected from the following: Cardiac shock signal sensor (ballistocardiogram sensor, BCG sensor), vibration sensor, micro-vibration sensor, a plurality of cardiac shock signal sensors, a plurality of vibration sensors, a plurality of micro-vibration sensors, a Vibration sensors in the above directions, micro-vibration sensors in more than one direction, A plurality of vibration sensors in more than one direction, or a plurality of micro-vibration sensors in more than one direction. The vibrability adjustment unit as described in any one of claims 1 to 4, each of the vibrability adjustment units may include one selected from the following: an elevated object; A riser has suitable one or more parameters selected from the group consisting of: Size, shape, shape, structure, material, quality, density, placement position, placement angle, fixing method, coefficient of friction between the raised object and the floor, and/or friction between the raised object and the bed coefficient; a cylinder; A cylinder has suitable parameters selected from one or more of the following: Size, structure, material, quality, density, placement position, placement angle, fixing method, coefficient of friction between the cylinder and the floor, and/or coefficient of friction between the cylinder and the bed; a strip; A strip has one or more parameters comprising suitable parameters selected from the group consisting of: Size, shape, shape, structure, material, quality, density, placement position, placement angle, fixing method, coefficient of friction between the strip and the floor, and/or friction between the strip and the bed coefficient; a wheel fittable somewhere between the bed and the floor; a wheel, the wheel may be installed somewhere between the bed and the floor, and the wheel has suitable parameters selected from one or more of the following: Size, shape, appearance, structure, material, quality, density, placement position, placement angle, solid fixed mode, the coefficient of friction between the wheel and the floor, and/or the coefficient of friction between the wheel and the bed; an object; or An object has one or more parameters selected from the group consisting of: Size, shape, shape, structure, material, quality, density, placement position, placement angle, fixing method, coefficient of friction between the object and the floor, and/or coefficient of friction between the object and the bed; The micro-vibration transmission unit as described in any one of claims 1 to 4, each of the micro-vibration transmission units may include one selected from the following: a set of linear mechanisms; or A set of linear mechanisms has suitable one or more parameters selected from the group consisting of: Size, shape, appearance, structure, material, quality, density, placement position, placement angle, fixing method, and/or the way the micro-vibration transmission unit is fixed on the bed. The micro-vibration signal as described in any one of claims 2 to 4, and its frequency domain signal can be obtained, and the spectral amplitude corresponding to the physiological parameter can be obtained by replacing one or more of the following : Micro-vibration signal; Signal to Noise Ratio (SNR) of micro-vibration signal; Signal-to-noise energy ratio of micro-vibration signals; micro-vibration signal, and its frequency domain signal can be obtained; or/and Micro-vibration signal, and its frequency domain signal can be obtained. The largest spectral amplitude corresponding to a physiological parameter as described in any one of claims 2 to 4 It can be replaced by one or more selected from the following, and it can be replaced in accordance with the order of the options in claim 12: Maximum time-domain signal strength; The signal-to-noise ratio of the largest time-domain signal; The signal-to-noise energy ratio of the largest time-domain signal; The maximum ratio of signal spectral strength to noise spectral strength in certain frequency bands; or/and The maximum ratio of signal spectral energy to noise spectral energy in certain frequency bands. The calculation and analysis of the physiological parameters of the subject as described in any one of claims 1 to 4 may include performing the calculation and analysis by one or more of the following: (a) The processor (processor) contained in the vibration sensing unit performs the calculation and analysis; (b) an additional processor, which is electrically connected to the vibration sensing unit, and transmits the measured physiological micro-vibration signal of the subject to the additional processor for calculation and analysis; (c) Transmit the measured physiological micro-vibration signal of the subject to the computer, and use the computer processor to perform the calculation and analysis; (d) transmit the measured physiological micro-vibration signal of the subject to the cloud, and use the cloud processor to perform the calculation and analysis; or/and (e) Transmit the measured physiological micro-vibration signal of the subject to the fog, and use the fog processor to perform the calculation and analysis. As described in any one of Claims 1 to 4, increasing the vibrability of the bed for micro-vibration signals also includes increasing the propagability of the bed for micro-vibration signals, thereby increasing the volume of the vibration sensing unit The amplitude or strength of the measured micro-vibration signal. As described in any one of claims 3 to 4, using software to construct the fretting dynamics model of the system, the model may include one or more of the following: The bed, the bed board of the bed, the bed frame of the bed, the bed rail of the bed, the test subject on the bed, the test subject The tester's heart shock signal model, the vibrability adjustment unit, the micro-vibration transmission unit, the vibration sensing unit, the bedding on the bed, the mattress on the bed, the quilt on the bed, the clothing on the bed, Pillows on the bed, medical care appliances on the bed, medical care equipment on the bed, mobile phones on the bed, smart devices on the bed, computers on the bed, drip racks on or near the bed, devices on or near the bed IV bags, IV lines on or near the bed, respirator tubing on or near the bed, urine bags in contact with the bed, floors in contact with the bed, walls in contact with the bed, and/or other The object that the bed is in contact with. The bed as claimed in any one of claims 1 to 4, which may comprise one of the following: Nursing care center beds, home beds, hospital beds, or all types of beds. The test subject as described in any one of claims 1 to 4, the test subject may include one of the following: People, dogs, cats, mice, pigs, cows, or other animals. The method and/or system as described in any one of Claims 1 to 4 may include selecting an auxiliary use of a vibrability adjustment unit to monitor equipment, and when the position of the vibrability adjustment unit is fixed, if it moves beyond a set threshold Or beyond the range, the monitoring equipment can send appropriate warning and notification signals through the vibration adjustment unit; As the vibrability adjustment unit monitoring device described in claim 19, the vibrability adjustment unit monitoring device may include: using one or more of a photographic device, an optical position detection device, or a mechanical position detection device to monitor the position of the vibrability adjustment unit, wherein the photographic device can combine the artificial intelligence image recognition method to identify the vibrability adjustment unit and its position.

Images