CN108289619A - Sleep monitor system - Google Patents

Sleep monitor system Download PDF

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Publication number
CN108289619A
CN108289619A CN201680000875.9A CN201680000875A CN108289619A CN 108289619 A CN108289619 A CN 108289619A CN 201680000875 A CN201680000875 A CN 201680000875A CN 108289619 A CN108289619 A CN 108289619A
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CN
China
Prior art keywords
unit
signal
sleep
sleep monitoring
sign data
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Pending
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CN201680000875.9A
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Chinese (zh)
Inventor
谭和华
罗辉
覃国秘
李刘海
李耀军
李光煌
钟志威
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Shenzhen Saiyi Technology Development Co Ltd
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Shenzhen Saiyi Technology Development Co Ltd
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Publication of CN108289619A publication Critical patent/CN108289619A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure

Abstract

The present invention provides a kind of sleep monitor systems, including acquisition terminal, server and mobile terminal;Wherein, acquisition terminal includes piezoelectric sensing unit, and piezoelectric sensing unit is used to acquire the pressure signal that sign variation generates in user's sleep, and pressure signal is converted into voltage signal output;For server by the communication receiving voltage signal with acquisition terminal, processing voltage signal obtains sign data, and obtains sleep monitor result according to sign data;The mobile terminal, the sign data for receiving and showing the server output and/or the sleep monitor result.Above-mentioned sleep monitor rate of accurateness is high and simple in structure.

Description

Sleep monitoring system Technical Field
The invention relates to the technical field of intelligent equipment, in particular to a sleep monitoring system.
Background
Sleep disorder is one of the important causes of the formation and the deterioration of various diseases, and the deficiency of sleep for a long time easily causes the physiological functions of the human body to be low, and seriously, a series of systemic lesions are also generated. Therefore, sleep monitoring has become an important link of health monitoring.
Domestic sleep monitor product on the market today is the wearing formula mostly, like carrying intelligent bracelet, wrist-watch on user's wrist etc. this kind of product embeds acceleration sensor, judges whether swing takes place for user's limbs according to the acceleration change value that acceleration sensor monitored, obtains the sleep monitor result again in view of the above, if user stands up number of times, sleep duration etc.. However, the judgment of the sleep monitoring result by the product mainly depends on the judgment of the limb movement condition of the user, so that misjudgment is easy to generate, and the accuracy rate is low.
Medical sleep monitoring products generally obtain sleep monitoring results by monitoring two physical signs, namely heartbeat and respiration, of a user, and although the accuracy rate of the sleep monitoring results is high, the structures of the products are too complex.
Disclosure of Invention
Based on this, there is a need to provide a sleep monitoring system to solve the problem that the existing sleep monitoring system is either low in accuracy or complex in structure.
In order to solve the technical problems, the following technical scheme is adopted:
a sleep monitoring system comprises an acquisition terminal and a server; wherein the content of the first and second substances,
the acquisition terminal comprises a piezoelectric sensing unit, and the piezoelectric sensing unit is used for acquiring a pressure signal generated by physical sign change of a user in sleep, converting the pressure signal into a voltage signal and outputting the voltage signal;
the server receives a voltage signal through communication with the acquisition terminal, processes the voltage signal to obtain sign data, and obtains a sleep monitoring result according to the sign data;
the mobile terminal is used for receiving and displaying the physical sign data and/or the sleep monitoring result output by the server.
Furthermore, the acquisition terminal also comprises a signal amplification unit, a signal filtering unit and an analog-to-digital conversion unit; wherein the content of the first and second substances,
the signal filtering unit is respectively connected with the signal amplifying unit and the analog-to-digital conversion unit through electric signals, and the signal amplifying unit is connected to the piezoelectric sensing unit through electric signals.
Furthermore, the number of the piezoelectric sensing units is two, and the piezoelectric sensing units are respectively used for acquiring pressure signals generated by respiratory sign changes and pressure signals generated by pulse sign changes in sleep of a user.
Furthermore, the number of the signal amplifying units and the number of the signal filtering units are two respectively; wherein the content of the first and second substances,
the piezoelectric sensing unit, the signal amplification unit and the signal filtering unit are sequentially connected through electric signals to form an output path corresponding to respiration sign change and an output path corresponding to pulse sign change, so that a gentle signal related to the respiration sign and a tip pulse signal related to the pulse sign are respectively output.
Furthermore, the acquisition terminal also comprises a micro-processing unit and a wireless communication unit in electric signal connection with the micro-processing unit; wherein the content of the first and second substances,
the micro-processing unit is connected with the module data conversion unit and used for controlling the wireless communication unit to transmit the digital voltage signal to the server.
Furthermore, the acquisition terminal also comprises a control circuit board, and a capacitor, the signal amplification unit, the signal filtering unit, the analog-to-digital conversion unit and the wireless communication unit are arranged on the control circuit board; wherein the content of the first and second substances,
the piezoelectric sensing unit is connected with electric signals at two ends of the capacitor through two lead wires;
and two ends of the capacitor are connected with the micro-processing unit after being in electric signal connection with the signal amplifying unit, the signal filtering unit and the analog-to-digital conversion unit.
Furthermore, the piezoelectric sensing unit is a monitoring film which takes a piezoelectric material as a main body, the periphery of the monitoring film is surrounded by an insulating film, polyester films plated with constantan foil electrodes are respectively adhered to the upper surface and the lower surface of the insulating film, and the constantan foil electrodes are led out by two leads.
Further, the server comprises a pressure signal calculation unit, a sign data calculation unit and a monitoring result acquisition unit; wherein the content of the first and second substances,
the pressure signal calculation unit is used for calculating the pressure signal according to the relation between the pressure applied to the piezoelectric material in the piezoelectric sensing unit and the generated voltage;
the sign data calculation unit is used for calculating the sign data according to the pressure signal;
the monitoring result acquisition unit is used for acquiring the sleep monitoring result according to the physical sign data.
Further, the physical sign data calculation unit comprises a frequency calculation subunit and an intensity calculation subunit;
the frequency calculation subunit and the intensity calculation subunit are respectively used for calculating frequency and intensity components of the physical sign data.
According to the technical scheme, the sleep monitoring system converts the pressure signal generated by the physical sign change of the user into the voltage signal through the piezoelectric sensing unit in the acquisition terminal and outputs the voltage signal, and then the server acquires the physical sign data according to the received voltage signal, so that the sleep monitoring result of the user is obtained. Because the physical sign data can show corresponding changes when the user is in a sleep state and a non-sleep state or in different stages of the sleep state, the data base judged by taking the physical sign data as a sleep monitoring result is more visual and reliable; moreover, the interference caused by the limb movement of the user can be avoided according to the obtained sleep monitoring result, and therefore the sleep monitoring system is simple in structure and ensures the accuracy of the sleep monitoring result.
Drawings
FIG. 1 is a schematic diagram of a sleep monitoring system in one embodiment;
FIG. 2 is a schematic diagram of an embodiment of an acquisition terminal;
FIG. 3 is a schematic structural diagram of an acquisition terminal in another embodiment;
FIG. 4 is a schematic diagram of a server in one embodiment;
fig. 5 is a schematic structural diagram of the vital sign data calculation unit in one embodiment.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
As described above, the existing home sleep monitoring product obtains the acceleration generated when the user limb moves through the built-in acceleration sensor, and determines the sleep monitoring result according to the acceleration. However, the existence or magnitude of the acceleration is not directly related to the sleeping state of the user, for example, the user turns over unconsciously in the sleeping process, and the acceleration sensor can acquire the corresponding acceleration; or, the user does not enter the sleep state and only lies calmly, and the acceleration sensor does not acquire the acceleration at this time. Therefore, the sleep monitoring result obtained by using the acceleration as the judgment basis is not accurate. In addition, medical sleep monitoring products are generally complex in technology, need to be operated by professionals, have large occupied area and high cost, and cannot meet the daily sleep monitoring requirements of users.
In view of this, a sleep monitoring system is proposed in particular to achieve the purposes of high accuracy and simple structure.
In one embodiment, specifically, the sleep monitoring system is shown in fig. 1, and includes an acquisition terminal 110 and a server 130. Wherein the content of the first and second substances,
the collecting terminal 110 includes a piezoelectric sensing unit, which is used for collecting a pressure signal generated by physical sign change during sleep of a user and converting the pressure signal into a voltage signal for output.
Human body physical signs mainly comprise heart rate, pulse, blood pressure, body temperature, respiration and the like, and activities such as heart beating, pulse beating, respiration and the like can cause the skin surface of a user to regularly vibrate. The collecting terminal 110 collects the pressure signal generated by the vibration by contacting the relevant part of the user's body.
The piezoelectric sensing unit is a piezoelectric sensor internally provided with a piezoelectric material, and the piezoelectric material can generate a voltage signal corresponding to a pressure signal to be output after being stressed.
The server 130 is configured to receive the voltage signal through communication with the acquisition terminal, process the voltage signal to obtain sign data, and obtain a sleep monitoring result according to the sign data.
The server calculates the pressure signal acquired by the acquisition terminal according to the received voltage signal, and the pressure signal is caused by the physical sign change of the user, so that physical sign data can be obtained according to the pressure signal.
Furthermore, the sleep monitoring result of the user, such as the time of falling asleep, the sleep time, the sleep quality and the like of the user, can be obtained according to the physical sign data and by combining medical knowledge.
Specifically, the server 130 is a cloud server.
According to the scheme, the sleep monitoring system takes the piezoelectric sensing unit in the acquisition terminal as a sensing device for collecting the physical sign data, and the server calculates the physical sign data of the user according to the voltage signal output by the acquisition terminal, so that the sleep condition of the user is obtained. The collecting terminal can be worn to be in contact with the relevant part of the body of the user, inconvenience is not caused to the sleep of the user, and the collecting terminal is free of electromagnetic interference and suitable for various user groups.
As shown in fig. 2, in another embodiment, the acquisition terminal 110 further includes a signal amplifying unit 111, a signal filtering unit 113 and an analog-to-digital converting unit 115. Wherein the content of the first and second substances,
the signal filtering unit 113 is electrically connected to the signal amplifying unit 111 and the analog-to-digital converting unit 115, respectively, and the signal amplifying unit 111 is electrically connected to the piezoelectric sensing unit.
In another embodiment, the number of the piezoelectric sensing units is two, and the piezoelectric sensing units are respectively used for acquiring pressure signals generated by respiratory sign changes and pulse sign changes of a user in sleep. For convenience of description, the respiration piezoelectric sensing unit and the pulse piezoelectric sensing unit are respectively referred to.
The breathing piezoelectric sensing unit is used for collecting pressure signals generated by skin surface vibration when a user breathes, and converting the pressure signals into voltage signals to be output. The skin surface vibration caused by respiration is a periodically enhancing and weakening process, so that a voltage curve drawn according to the relation of the voltage signal output by the respiration piezoelectric sensing unit and time is approximately in a sine curve shape. When in use, the acquisition terminal comprising the breathing piezoelectric sensing unit can be tightly attached to the skin of the abdomen of a user.
The pulse piezoelectric sensing unit is used for acquiring a pressure signal generated by vibration of the skin surface when the pulse of a user beats, and converting the pressure signal into a voltage signal to be output. The skin surface vibration caused by the pulse beat is strong vibration in a short time, and therefore, a voltage curve drawn according to the relation between the voltage signal output by the pulse piezoelectric sensing unit and the time is a tip pulse. When in use, the acquisition terminal comprising the pulse piezoelectric sensing unit can be tightly attached to the skin of the radial artery of a user.
Correspondingly, the number of the signal amplifying units 111 and the number of the signal filtering units 113 are two, and the piezoelectric sensing units, the signal amplifying units 111 and the signal filtering units 113 are sequentially connected by electric signals to form output paths corresponding to respiration sign changes and output paths corresponding to pulse sign changes so as to respectively output gentle signals related to the respiration sign and tip pulse signals related to the pulse sign. Also, for convenience of description, the respiration signal amplifying unit and the pulse signal amplifying unit are respectively referred to as a respiration signal filtering unit and a pulse signal filtering unit.
Generally, the normal respiration frequency ranges from 15 to 50 times per minute, and the normal pulse beat ranges from 50 to 170 times per minute. The respiratory signal filtering unit is used for filtering the voltage signal amplified by the respiratory signal amplifying unit and only leaving approximate sine wave signals of 15-50 cycles per minute; similarly, the pulse signal filtering unit is used for filtering the voltage signal amplified by the pulse signal amplifying unit, and only 50-170 times of tip pulse signals per minute are left.
In another embodiment, as shown in fig. 3, the acquisition terminal 110 further comprises a microprocessor unit 117 and a wireless communication unit 119 electrically connected to the microprocessor unit 117.
The micro-processing unit 117 is electrically connected to the analog-to-digital conversion unit 115, and is configured to receive the voltage signal output by the analog-to-digital conversion unit 115 and control the wireless communication unit 119 to transmit the voltage signal to the server 130 in a wireless transmission manner.
In another embodiment, the piezoelectric sensing unit comprises a monitoring film mainly made of PVDF (polyvinylidene fluoride) novel polymer composite piezoelectric material, the periphery of the monitoring film is surrounded by an insulating film, and a polyester film plated with constantan foil electrodes is respectively adhered to the upper surface and the lower surface of the insulating film. The constantan foil electrode is used for protecting and qualitatively monitoring the shape of the film, avoiding short circuit and transmitting signals, and is led out by two leads.
In addition, the acquisition terminal 110 further includes a control circuit board on which a capacitor, a signal amplification unit 111, a signal filtering unit 113, an analog-to-digital conversion unit 115, and a wireless communication unit 119 are disposed. Wherein the content of the first and second substances,
the piezoelectric sensing unit is connected with electric signals at two ends of the capacitor through two wires so as to be connected into the control circuit board;
the two ends of the capacitor are connected with the signal amplifying unit 111, the signal filtering unit 113 and the analog-to-digital conversion unit 115 through electric signals and then are connected to the micro-processing unit 117;
the microprocessor unit 117 is electrically connected to the wireless communication unit 119 to control communication between the wireless communication unit 119 and the server 130.
As shown in fig. 4, in another embodiment, the server 130 includes a pressure signal calculation unit 131, a vital sign data calculation unit 133, and a monitoring result acquisition 135. Wherein the content of the first and second substances,
and a pressure signal calculating unit 131 for calculating a pressure signal from the voltage signal according to the relationship between the pressure applied to the piezoelectric material in the piezoelectric sensing unit and the generated voltage.
Vibration caused by user physical sign change enables piezoelectric materials in the piezoelectric sensing unit to generate electric charges, and the electric charges are gathered at two ends of a capacitor on the control circuit board through electrodes, so that voltage is generated at two ends of the capacitor. The capacitance versus voltage relationship is as follows:
where U is the voltage, Q is the amount of charge, and C is the capacitance.
The formula for a piezoelectric material under pressure in the absence of an electric field is as follows:
D=d·σ
wherein D is the stress magnitude and direction, D is the piezoelectric stress constant matrix, and σ is the charge magnitude in the unit piezoelectric material area direction.
The formula of the total charge generated by the piezoelectric material is as follows:
Q=A·K·σ
wherein A is the area of the piezoelectric material, and K is the sensitivity coefficient of the piezoelectric material.
According to the above formula, the relationship between the pressure applied to the piezoelectric material and the generated voltage can be obtained, and the formula is as follows:
D=d·U/(A·K·C)
it can be seen that the pressure experienced by the piezoelectric material is directly proportional to the voltage generated.
And a sign data calculating unit 133, configured to calculate sign data according to the voltage signal.
The relationship between the voltage signal and the time is obtained by processing the voltage signal, the relationship between the corresponding pressure signal and the time is obtained according to the corresponding relationship between the pressure signal received by the piezoelectric material and the generated voltage signal, and then the physical sign data can be obtained according to the relationship between the pressure signal and the time.
And a monitoring result obtaining unit 135, configured to obtain a sleep monitoring result according to the physical sign data.
As shown in fig. 5, in another embodiment, the vital sign data calculation unit 133 includes a frequency calculation subunit 1331 and an intensity calculation subunit 1333. Wherein the content of the first and second substances,
the frequency calculation subunit 1331 and the intensity calculation subunit 1335 are used to calculate the frequency and intensity components, respectively, of the vital sign data.
Accordingly, the monitoring result obtaining unit 135 obtains the sleep monitoring result according to the frequency and intensity components of the vital sign data. For example, if the acquired parameters such as respiratory rate, strength, pulse rate, strength and the like are unstable and may be caused by more limb movements of the user, the user is considered not to enter a sleep state; and if the acquired parameters such as the respiratory frequency, the intensity, the pulse frequency, the intensity and the like are stable, the user is considered to enter a sleep state.
In another embodiment, the sleep monitoring system further comprises:
and the mobile terminal 150 is configured to receive and display the physical sign data and/or the sleep monitoring result output by the server.
The mobile terminal 150 includes various mobile terminals having a display screen function, such as a notebook, a PAD, a mobile phone, and the like.
After judging the sleep monitoring result, the server sends the curve chart drawn according to the physical sign data and the sleep monitoring result to the mobile terminal 150 of the user in a wired or wireless communication mode, so that the user can look up the physical sign data and the sleep condition when sleeping on the mobile terminal 150 conveniently.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

  1. A sleep monitoring system is characterized by comprising an acquisition terminal, a server and a mobile terminal; wherein the content of the first and second substances,
    the acquisition terminal comprises a piezoelectric sensing unit, and the piezoelectric sensing unit is used for acquiring a pressure signal generated by physical sign change of a user in sleep, converting the pressure signal into a voltage signal and outputting the voltage signal;
    the server receives a voltage signal through communication with the acquisition terminal, processes the voltage signal to obtain sign data, and obtains a sleep monitoring result according to the sign data;
    the mobile terminal is used for receiving and displaying the physical sign data and/or the sleep monitoring result output by the server.
  2. The sleep monitoring system as claimed in claim 1, wherein the acquisition terminal further comprises a signal amplification unit, a signal filtering unit and an analog-to-digital conversion unit; wherein the content of the first and second substances,
    the signal filtering unit is respectively connected with the signal amplifying unit and the analog-to-digital conversion unit through electric signals, and the signal amplifying unit is connected to the piezoelectric sensing unit through electric signals.
  3. The sleep monitoring system as claimed in claim 2, wherein the number of the piezoelectric sensing units is two, and the two piezoelectric sensing units are respectively used for acquiring the pressure signal generated by the respiration sign change and the pressure signal generated by the pulse sign change during the sleep of the user.
  4. The sleep monitoring system as claimed in claim 3, wherein the number of the signal amplifying unit and the signal filtering unit is two respectively; wherein the content of the first and second substances,
    the piezoelectric sensing unit, the signal amplification unit and the signal filtering unit are sequentially connected through electric signals to form an output path corresponding to respiration sign change and an output path corresponding to pulse sign change, so that a gentle signal related to the respiration sign and a tip pulse signal related to the pulse sign are respectively output.
  5. The sleep monitoring system as claimed in claim 3, wherein the collection terminal further comprises a micro-processing unit and a wireless communication unit in electrical signal connection with the micro-processing unit; wherein the content of the first and second substances,
    the micro-processing unit is connected with the module data conversion unit and used for controlling the wireless communication unit to transmit the digital voltage signal to the server.
  6. The sleep monitoring system as claimed in claim 5, wherein the acquisition terminal further comprises a control circuit board on which a capacitor, the signal amplification unit, the signal filtering unit, the analog-to-digital conversion unit, and the wireless communication unit are disposed; wherein the content of the first and second substances,
    the piezoelectric sensing unit is connected with electric signals at two ends of the capacitor through two lead wires;
    and two ends of the capacitor are connected with the micro-processing unit after being in electric signal connection with the signal amplifying unit, the signal filtering unit and the analog-to-digital conversion unit.
  7. The sleep monitoring system according to claim 6, wherein the piezoelectric sensing unit is a monitoring film mainly made of piezoelectric material, the periphery of the monitoring film is surrounded by an insulating film, polyester films plated with constantan foil electrodes are respectively adhered on the upper surface and the lower surface of the insulating film, and the constantan foil electrodes are led out by two leads.
  8. The sleep monitoring system as claimed in claim 1, wherein the server includes a pressure signal calculation unit, a sign data calculation unit and a monitoring result acquisition unit; wherein the content of the first and second substances,
    the pressure signal calculation unit is used for calculating the pressure signal according to the relation between the pressure applied to the piezoelectric material in the piezoelectric sensing unit and the generated voltage;
    the sign data calculation unit is used for calculating the sign data according to the pressure signal;
    the monitoring result acquisition unit is used for acquiring the sleep monitoring result according to the physical sign data.
  9. The sleep monitoring system as in claim 8, wherein the vital sign data calculation unit comprises a frequency calculation subunit and an intensity calculation subunit;
    the frequency calculation subunit and the intensity calculation subunit are respectively used for calculating frequency and intensity components of the physical sign data.
CN201680000875.9A 2016-01-06 2016-01-06 Sleep monitor system Pending CN108289619A (en)

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PCT/CN2016/070248 WO2017117739A1 (en) 2016-01-06 2016-01-06 Sleep monitoring system

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CN107595251A (en) * 2017-10-09 2018-01-19 安徽理工大学 A kind of system of monitoring sleep
CN109886849A (en) * 2019-02-03 2019-06-14 岳金一 For the automatic inspection tour system of the two-berth intelligent bed of school dormitory and school dormitory
CN110051329A (en) * 2019-04-26 2019-07-26 广东工业大学 A kind of sleep monitor method, apparatus, system and readable storage medium storing program for executing
CN111657862A (en) * 2020-06-08 2020-09-15 浙江理工大学 Washable integrated flexible fabric array sensor and method thereof and intelligent mattress

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Application publication date: 20180717