CN111820867B - Respiration monitoring device and system - Google Patents
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- CN111820867B CN111820867B CN201910243242.6A CN201910243242A CN111820867B CN 111820867 B CN111820867 B CN 111820867B CN 201910243242 A CN201910243242 A CN 201910243242A CN 111820867 B CN111820867 B CN 111820867B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4818—Sleep apnoea
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0816—Measuring devices for examining respiratory frequency
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0826—Detecting or evaluating apnoea events
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0083—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus especially for waking up
Abstract
The present disclosure provides a respiratory monitoring device and system, respiratory monitoring device includes the load bearing member and bears on the load bearing member: a sound collection unit configured to sense a breathing sound of a user and convert it into an electrical signal; an apnea related parameter acquisition unit configured to acquire an apnea related parameter, the apnea related parameter including at least one of a body movement pressure signal and a photoplethysmography signal related to a blood oxygen parameter; a wake-up unit configured to wake-up a user; and the microprocessor is configured to send out a first control signal for starting the apnea related parameter acquisition unit under the condition that the user is judged to be in the snoring state based on the electric signal provided by the sound acquisition unit, and send out a second control signal for starting the awakening unit under the condition that the user is judged to be at the apnea risk based on the apnea related parameter. The respiration monitoring device and the system have low power consumption, high accuracy for judging the existence of apnea risks and capability of awakening a user.
Description
Technical Field
The present disclosure relates to the field of medical devices, and more particularly, to a respiratory monitoring device and system.
Background
90% of sleep apnea syndrome is obstructive apnea, the clinical manifestation is snoring, the main risk factor is obesity, about 2 hundred million people exist in Chinese snoring population, the number of obese people is 8960 ten thousand, the sleep apnea syndrome is the morbidity factor or important risk factor of various cardiovascular, cerebrovascular and respiratory system diseases, long-term chronic hypoxia stimulation can cause irreversible tissue organ remodeling, organic change occurs, the gold standard for clinically detecting sleep respiration is Polysomnography (PSG), the sleep apnea syndrome is judged through a plurality of parameters such as brain electricity, eye electricity, mandibular myoelectricity, mouth and nose airflow, hyperpnea, electrocardio, blood oxygen, snore, limb movement, body position and the like, the monitoring result of the Polysomnography (PSG) needs manual analysis by a doctor and is poor in use feeling, and the Polysomnography (PSG) can only be applied to hospitals, the existing household respiration monitoring device has the advantages of less detection indexes, low accuracy and no intervention means.
Disclosure of Invention
To the above-mentioned technical problem that exists among the prior art, this disclosure provides a respiration monitoring device and system, its consumption is lower, and the stand-by time is longer, and the degree of accuracy of judging that the user has the apnea risk is higher to in time awaken the user under the condition that judges that the user has the apnea risk, avoid the user to lead to stifling because of apnea, promote user's use and experience.
According to a first aspect of the present disclosure, there is provided a respiratory monitoring device comprising a carrier member, the respiratory monitoring device further comprising: a sound collection unit configured to sense a breathing sound of a user and convert it into an electrical signal; an apnea-related parameter acquisition unit configured to be enabled upon receipt of a first control signal to acquire an apnea-related parameter, the apnea-related parameter comprising at least one of a body movement pressure signal and a photoplethysmography signal related to a blood oxygenation parameter; a wake-up unit configured to wake up the user upon receiving a second control signal; and the microprocessor is configured to judge whether the user is in a snoring state or not based on the electric signal provided by the sound collection unit, send a first control signal for starting the apnea related parameter collection unit under the condition that the user is judged to be in the snoring state, judge whether the user has an apnea risk or not based on the apnea related parameter collected by the apnea related parameter collection unit, and send a second control signal for starting the awakening unit under the condition that the user is judged to have the apnea risk.
In some embodiments, the apnea-related parameter acquisition unit comprises a blood oxygen signal acquisition unit configured to acquire a photoplethysmography signal related to a blood oxygen parameter; the microprocessor is further configured to determine a current blood oxygen saturation value of the user based on the photoplethysmographic signal and to issue the second control signal when a rate of decrease of the current blood oxygen saturation value of the user exceeds a first preset value.
In some embodiments, the apnea-related parameter acquisition unit comprises a body movement pressure acquisition unit configured to acquire a body movement pressure signal of a breathing-related head of the user; the microprocessor is further configured to: and determining the breathing frequency of the user based on the body movement pressure signal, and sending out the second control signal when the irregularity of the breathing frequency exceeds a second preset value.
In some embodiments, the apnea-related parameter acquisition unit further comprises a body movement pressure acquisition unit configured to acquire a body movement pressure signal of a breathing-related head of the user; the microprocessor is further configured to determine a breathing frequency of the user based on the body movement pressure signal and issue a third control signal to activate the blood oxygen signal acquisition unit when an irregularity in the breathing frequency exceeds a second preset value; wherein the blood oxygen signal acquisition unit is configured to be enabled upon receipt of a third control signal.
In some embodiments, determining whether the user is in a snoring state based on the electrical signals provided by the sound collection unit comprises: carrying out autocorrelation processing on the electric signal of the sound; performing time-frequency domain conversion on the electrical signal subjected to the autocorrelation processing to obtain a frequency domain signal; determining a maximum amplitude in the frequency domain signal, determining that the user is in a snoring state when an amplitude at 2 times a frequency corresponding to the maximum amplitude is not less than 1/3 of the maximum amplitude.
In some embodiments, the microprocessor is further configured to: performing autocorrelation processing on the body motion pressure signal; carrying out time-frequency domain conversion on the body motion pressure signal subjected to autocorrelation processing to obtain a frequency domain signal; removing fundamental frequency and frequency multiplication components from the frequency domain signal, and then converting the frequency domain signal back to the time domain to obtain a second bulk pressure signal; wherein the user's breathing frequency is determined based on the second volumetric pressure signal.
In some embodiments, the first preset value is 5%.
In some embodiments, the irregularity in breathing rate includes an increase rate of breathing rate, and the preset range of the second preset value is 15% to 30%.
In some embodiments, the microprocessor is further configured to: turning off the apnea related parameter acquisition unit and the wake-up unit in case it is determined that the user is no longer in the snoring state.
In some embodiments, a sound collection unit configured to sense and convert respiratory sounds of the user into electrical signals at predetermined time intervals.
In some embodiments, the wake-up unit comprises a light emitting diode configured to emit light towards the eyes of the user to wake-up the user.
In some embodiments, the carrier member comprises a side strap adapted to cover the front of the user's eyes and two tails securable to each other; wherein the anterior portion includes two first portions corresponding to both eyes, two second portions surrounding the respective first portions for fitting to the temple, and a connecting portion connecting the two second portions.
In some embodiments, a sound collection unit is disposed at the connection portion; the blood oxygen signal acquisition unit is arranged at one side of the second part close to the side strip to sense the photoplethysmal signal of the temple of the user; the wake-up unit is arranged on the opposite side of the front portion with respect to the blood oxygen signal acquisition unit.
In some embodiments, the side band includes a slack portion, and the body movement pressure collecting unit is a thin film pressure sensor in a band shape and is built in a portion of the side band other than the slack portion. In some embodiments, the respiratory monitoring device further comprises: a storage unit configured to store sleep-related data of the user; a first wireless communication unit configured to transmit the sleep-related data. According to a second aspect of the present disclosure, there is provided a respiration monitoring system comprising a respiration monitoring device according to any one of the embodiments of the present disclosure and a terminal, the terminal comprising: a second wireless communication unit configured to receive the sleep-related data; a processor configured to process the sleep-related data.
Compared with the prior art, this disclosed beneficial effect lies in:
the respiration monitoring device and the system provided by the disclosure control the starting of each unit through the microprocessor according to the signals collected by the collecting unit, so that the power consumption of the respiration monitoring device and the system is lower, the standby time is longer, the accuracy for judging the existence of the apnea risk of a user is higher, the user is awakened in time through the awakening unit under the condition that the existence of the apnea risk of the user is judged, the suffocation of the user caused by the apnea is avoided, and the use experience of the user is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
This section provides a general summary of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.
FIG. 1 is a schematic diagram of a respiratory monitoring device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a respiratory monitoring device according to one embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating an operation of a blood oxygen signal collecting unit of a respiration monitoring device according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a carrier member of a respiratory monitoring device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a respiration monitoring system according to an embodiment of the disclosure.
Description of reference numerals:
100-a respiration monitoring device; 110-a load-bearing member; 111-front part; 112-side straps; 113-a first portion; 114-a second portion; 115-a connecting portion; 116-a slack section; 120-a sound collection unit; 130-an apnea related parameter acquisition unit; 131-a blood oxygen signal acquisition unit; 132-a body movement pressure acquisition unit; 140-a wake-up unit; 150-a microprocessor; 160-a storage unit; 170-a first wireless communication unit; 200-a respiration monitoring system; 210-a terminal; 211-a second wireless communication unit; 212-a processor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
Fig. 1 is a schematic structural diagram of a respiration monitoring device 100 according to an embodiment of the present disclosure, and as shown in fig. 1, the present disclosure provides a respiration monitoring device 100 including a carrier member 110, and the respiration monitoring device 100 further includes: a sound collection unit 120 configured to sense a user's breath sound and convert it into an electrical signal; an apnea-related parameter acquisition unit 130 configured to be enabled to acquire an apnea-related parameter upon receiving a first control signal, wherein the apnea-related parameter includes at least one of a body movement pressure signal and a photoplethysmography signal related to a blood oxygen parameter; a wake-up unit 140 configured to wake up the user upon receiving the second control signal; and a microprocessor 150 configured to determine whether the user is in a snoring state based on the electrical signal provided by the sound collection unit, to issue a first control signal to activate the apnea related parameter collection unit 130 if it is determined that the user is in the snoring state, to determine whether the user is at risk of apnea based on the apnea related parameter collected by the apnea related parameter collection unit 130, and to issue a second control signal to activate the wake-up unit 140 if it is determined that the user is at risk of apnea. Specifically, the respiration monitoring device 100 further includes a power supply module (not shown in the figure) for supplying power thereto, when the respiration monitoring device 100 is just started, the apnea related parameter collecting unit 130 and the wake-up unit 140 are in an off state, the microprocessor 150 processes the electrical signal provided by the sound collecting unit 120 and determines whether the user is in a snoring state based on the electrical signal, sends a first control signal to start the apnea related parameter collecting unit 130 when determining that the user is in the snoring state, and sends a second control signal to start the wake-up unit 140 to wake up the user when determining that the user is at risk of apnea according to the apnea related parameters, such an operation mode of the respiration monitoring device 100 provided by the embodiment of the present disclosure can reduce the power consumption of the respiration monitoring device 100, prolong the standby time of the respiration monitoring device 100, and the accuracy of determining that the user is at risk of apnea is high, and the user is awakened in time through the awakening unit 140 under the condition that the apnea risk of the user is judged, so that the suffocation of the user caused by apnea is avoided, and the use experience of the user is improved.
Specifically, the signal collected by the sound collection unit 120 in the state that the user does not snore is usually a white noise signal or a noise signal generated by the movement of the respiration monitoring device 100, the noise signal has no obvious periodicity, but the signal collected by the sound collection unit 120 in the state that the user snores has periodicity, and the microprocessor 150 processes the signal collected by the sound collection unit 120 to determine whether the user snores according to the extracted feature related to the periodicity of the signal. Optionally, the wake-up unit 140 may include a sound generator, a light generator, etc. for waking up the user by sound, light, etc., which is not limited in detail herein.
In some embodiments, apnea related parameter acquisition unit 130 comprises a blood oxygen signal acquisition unit configured to acquire a photoplethysmography signal related to a blood oxygen parameter, microprocessor 150 processes the photoplethysmography signal and determines a current blood oxygen saturation value of the user based thereon, and issues a second control signal when a rate of decrease of the current blood oxygen saturation value of the user exceeds a first preset value. Specifically, the blood oxygen saturation value is related to apnea, and the blood oxygen saturation value decreases after a period of time of the user, so that whether the person is at risk of apnea can be determined according to the decrease rate of the blood oxygen saturation value, wherein the decrease rate of the current blood oxygen saturation value is calculated according to the current blood oxygen saturation value and a reference blood oxygen saturation value, the reference blood oxygen saturation value is obtained by averaging the blood oxygen saturation values measured in multiple stages at the initial stage of wearing the respiration monitoring device 100 by the user, the microprocessor 150 determines that the person is at risk of apnea when the decrease rate of the current blood oxygen saturation value exceeds a first preset value, and then sends a second control signal to start the wakeup unit 140, and awakens the user at that time, so that the user is prevented from apnea due to apnea.
In some embodiments, the apnea-related parameter acquisition unit 130 comprises a body movement pressure acquisition unit configured to acquire a body movement pressure signal of the head of the user related to breathing, and the microprocessor 150 determines the breathing rate of the user based on the body movement pressure signal and issues a second control signal when the irregularity of the breathing rate exceeds a second preset value. Specifically, the body movement pressure signal of the head of the human body is related to the breathing state of the human body, the breathing frequency determined based on the body movement pressure signal can reflect whether the human body has a risk of apnea to a certain extent, the breathing frequency can be increased when the human body is in a snoring state and is accompanied by the risk of apnea, the microprocessor 150 processes the body movement pressure signal to determine the breathing frequency of the user, determines the irregularity of the breathing frequency according to the current breathing frequency of the user, and sends a second control signal to start the awakening unit 140 to awaken the user when the irregularity of the breathing frequency exceeds a second preset value to determine that the user has the risk of apnea, so as to avoid the apnea of the user. Alternatively, the irregularity of the breathing rate may be an increase rate of the breathing rate over a period of time, a decrease rate of the average breathing time period, and the like, and is not particularly limited herein.
In some embodiments, as shown in fig. 2, the apnea related parameter collecting unit 130 further comprises a body movement pressure collecting unit 132, the body movement pressure collecting unit 132 is configured to collect a body movement pressure signal of the head of the user related to respiration, the microprocessor 150 determines the respiration rate of the user based on the body movement pressure signal, and sends out a third control signal for activating the blood oxygen signal collecting unit 131 when the irregularity degree of the respiration rate exceeds a second preset value; wherein the blood oxygen signal acquisition unit 131 is configured to be enabled when receiving the third control signal. Specifically, compared with the respiratory rate, the blood oxygen saturation value can be used to judge whether the human body has an apnea risk in a more physiologically accurate manner, based on this, in this embodiment, the start priority of the body movement pressure acquisition unit 132 in the parameter acquisition unit 130 related to apnea is set to be higher than that of the blood oxygen signal acquisition unit 131, the microprocessor 150 first sends a third control signal to start the blood oxygen signal acquisition unit 131 when determining that the user has an apnea risk with a higher possibility according to the irregularity of the respiratory rate, and further determines whether the user has an apnea risk according to the reduction ratio of the current blood oxygen saturation value, and this operation mode can both improve the accuracy of determining whether the user has an apnea risk and reduce the power consumption of the respiratory monitoring device 100.
Specifically, the oxygenated hemoglobin and the deoxygenated hemoglobin in the human tissue have a certain absorption effect on the near-infrared light and the infrared light, as shown in fig. 3, the blood oxygen signal acquisition unit 131 includes two light emitting diode components and two photoelectric sensors, the two light emitting diode components are used for respectively emitting the near-infrared light and the infrared light to the body surface, the photoelectric sensors sense the intensity of the near-infrared light and the infrared light returned from the human tissue, that is, two photoelectric product signals, the microprocessor 150 performs feature extraction on the two photoelectric product signals, and substitutes the following calculation formula to calculate the blood oxygen saturation value:
wherein the content of the first and second substances,
respectively, at the wavelength of lightiThe maximum and minimum amplitudes of the sensed photoplethysmographic signal, A, B, are constant coefficients.
In some embodiments, the microprocessor 150 determining whether the user is in the snoring state based on the electrical signals provided by the sound collection unit 120 includes: firstly, carrying out autocorrelation processing on an electric signal of sound to identify a periodic electric signal which is covered by noise; then, performing time-frequency domain conversion on the electrical signal subjected to the autocorrelation processing to obtain a frequency domain signal, specifically, if the electrical signal subjected to the autocorrelation processing is periodic in a time domain, the amplitude of the frequency domain signal obtained after the time-frequency domain conversion has an obvious peak value and has obvious frequency multiplication; and finally, determining the maximum amplitude in the frequency domain signal, and determining that the user is in the snoring state when the amplitude at the frequency which is 2 times of the frequency corresponding to the maximum amplitude is not less than 1/3 of the maximum amplitude.
In some embodiments, the microprocessor 150 processing the body motion pressure signal to determine the breathing rate includes: firstly, carrying out autocorrelation processing on the body motion pressure signal to identify a periodic body motion pressure signal which is covered by noise; then, carrying out time-frequency domain conversion on the body motion pressure signal subjected to the autocorrelation processing to obtain a frequency domain signal, wherein the frequency domain signal obtained after the time-frequency domain conversion has obvious frequency multiplication; and finally, removing fundamental frequency and frequency multiplication components from the frequency domain signal, then converting the frequency domain signal back to the time domain to obtain a second volumetric pressure signal, and determining the respiratory frequency of the user based on the second volumetric pressure signal.
In some embodiments, the first preset value is 5%. There is relevant data indicating that a rate of decrease of the current blood oxygen saturation value of more than 5% indicates that the person is at risk of apnea.
In some embodiments, the irregularity in the breathing rate includes an increase rate of the breathing rate, and the preset range of the second preset value is 15% -30%. Specifically, the increase rate of the breathing rate may be determined according to the current breathing rate of the user and the breathing rate thereof in the normal sleep state or the current breathing rate of the user and the reference value of the breathing rate in the normal sleep state within the age range of the user, which is not specifically limited herein.
In some embodiments, microprocessor 150 is further configured to turn off apnea-related parameter acquisition unit 130 and wake-up unit 140 if it is determined that the user is no longer in the snoring state. Specifically, after the waking unit 140 wakes up the user, the microprocessor 150 determines that the user is no longer in the snoring state according to the electrical signal of the sound provided by the sound collecting unit 120, and then sends a fourth control signal to turn off the apnea related parameter collecting unit 130 and the waking unit 140, so as to reduce the power consumption of the respiration monitoring device 100 and prolong the standby time of the respiration monitoring device 100.
In some embodiments, the sound collection unit 120 is configured to sense the breathing sound of the user at predetermined time intervals and convert the breathing sound into an electrical signal, so that the power consumption of the breathing monitoring device 100 can be further reduced, and in particular, the predetermined time intervals can be set by the user through an input unit (not shown in the figure) in the monitoring device 100.
In some embodiments, the wake-up unit 140 includes a light emitting diode (not shown) configured to emit light to the eyes of the user to wake up the user. Specifically, the wake-up unit 140 gradually increases the light intensity by gradually increasing the forward current of the light emitting diode, so as to wake up the user in a softer light wake-up manner, thereby avoiding discomfort to the user during the wake-up process.
In some embodiments, as shown in fig. 4, the carrier member 110 comprises a front portion 111 adapted to cover the eyes of a user and two side straps 112 to which the tail portions can be secured to each other; wherein the front part 111 includes two first portions 113 corresponding to both eyes, two second portions 114 surrounding the respective first portions 113 for fitting to the temples, and a connection part 115 connecting the two second portions 114. When the user wears the respiratory monitoring device 100, the front portion 111 covers the eyes and temples of the user, and the carrier member 110 is fixed to the head of the user by the side straps 112.
In some embodiments, the sound collection unit 120 is disposed at the connection portion 115 to sense the breathing sound of the user, the blood oxygen signal collection unit 131 is disposed at a side of the second portion 114 near the side band 112 to sense the photoplethysmic signal of the temple of the user, and the wake-up unit 140 is disposed at an opposite side of the front portion 111 with respect to the blood oxygen signal collection unit 131. Specifically, the sound collection unit 120 is disposed at the connection portion 115 to sense the breathing sound of the user and does not need to be disposed at the lower jaw of the user as in the conventional breathing sound collector, because the stratum corneum of the skin of the temporal region of the human body is thin, the near infrared light and the infrared light emitted by the light emitting diode component in the blood oxygen signal collection unit 131 can be well absorbed by the oxygenated hemoglobin and the deoxygenated hemoglobin in the human tissue, and the photoelectric sensor can better sense the intensity of the near infrared light and the infrared light returned from the human tissue, so that a high-quality photoplethysmographic signal can be obtained, the accuracy of judging whether the user has the apnea risk can be improved, and the wake-up unit 140 can be disposed on the first portion 113 or the second portion 114 on the opposite side of the front portion 111 relative to the blood oxygen signal collection unit 131 to facilitate passing through the light, Voice, etc. to wake up the user while avoiding interfering with the acquisition of the blood oxygen signal.
In some embodiments, as shown in fig. 4, the side strap 112 includes the elastic part 116, and the body movement pressure collecting unit 132 is a belt-shaped film pressure sensor which is embedded in the part of the side strap 112 except the elastic part 116, can be better attached to the head of the user, and enables the body movement pressure collecting unit 132 to collect body movement pressure signals in different sleeping orientations of the user.
In some embodiments, as shown in fig. 2, the respiration monitoring apparatus 100 further includes a storage unit 160 and a first wireless communication unit 170, the storage unit 160 is configured to store sleep-related data of the user, and the first wireless communication unit 170 is configured to transmit the sleep-related data to a terminal or a server for the user to view or process the data, wherein the sleep-related data may be electrical signal data of sound, snoring time, respiration rate, blood oxygen saturation value, etc., and is not limited in this respect.
Fig. 5 is a schematic structural diagram of a respiration monitoring system 200 according to an embodiment of the present disclosure, and as shown in fig. 5, an embodiment of the present disclosure further provides a respiration monitoring system 200 including the respiration monitoring apparatus 100 according to any one of the embodiments of the present disclosure and a terminal 210, where the terminal 210 includes a second wireless communication unit 211 and a processor 212, the second wireless communication unit 211 is configured to receive sleep-related data sent by the first wireless communication unit 170 in the respiration monitoring apparatus 100, the processor 212 is configured to process the sleep-related data to evaluate a sleep condition of a user, and optionally, the terminal 210 further includes a display (not shown in fig. 4) to facilitate the user to view the sleep condition.
The respiration monitoring system 200 provided by the embodiment of the present disclosure controls the start of each unit according to the signals collected by the collecting unit through the microprocessor 150, so that the power consumption of the respiration monitoring system 200 is low, the standby time is long, the accuracy for judging that the user has the apnea risk is high, and the user is awakened in time through the awakening unit 140 under the condition that the user is judged to have the apnea risk, so that the user is prevented from suffocating due to apnea, and the use experience of the user is improved.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.
Claims (15)
1. A respiratory monitoring device comprising a carrier member, wherein the respiratory monitoring device further comprises, carried on the carrier member:
a sound collection unit configured to sense a breathing sound of a user and convert it into an electrical signal;
an apnea-related parameter acquisition unit configured to be enabled upon receipt of a first control signal to acquire an apnea-related parameter, the apnea-related parameter comprising at least one of a body movement pressure signal and a photoplethysmography signal related to a blood oxygenation parameter;
a wake-up unit configured to wake up the user upon receiving a second control signal; and
the microprocessor is configured to judge whether the user is in a snoring state or not based on the electric signal provided by the sound collection unit, send a first control signal for starting the apnea related parameter collection unit if the user is judged to be in the snoring state, judge whether the user has an apnea risk or not based on the apnea related parameter collected by the apnea related parameter collection unit, and send a second control signal for starting the awakening unit if the user is judged to have the apnea risk;
wherein the apnea related parameter acquisition unit further comprises a body movement pressure acquisition unit configured to acquire a body movement pressure signal of the head of the user related to respiration;
the microprocessor is further configured to determine a breathing frequency of the user based on the body movement pressure signal and issue a third control signal to activate the blood oxygen signal acquisition unit when an irregularity in the breathing frequency exceeds a second preset value;
wherein the blood oxygen signal acquisition unit is configured to be enabled upon receipt of a third control signal.
2. The respiratory monitoring device of claim 1, wherein the apnea related parameter acquisition unit includes a blood oxygen signal acquisition unit configured to acquire a photoplethysmographic signal related to a blood oxygen parameter;
the microprocessor is further configured to determine a current blood oxygen saturation value of the user based on the photoplethysmographic signal and to issue the second control signal when a rate of decrease of the current blood oxygen saturation value of the user exceeds a first preset value.
3. The respiratory monitoring device of claim 1 or 2, wherein the apnea related parameter acquisition unit comprises a body movement pressure acquisition unit configured to acquire a body movement pressure signal of the user's head related to respiration;
the microprocessor is further configured to: and determining the breathing frequency of the user based on the body movement pressure signal, and sending out the second control signal when the irregularity of the breathing frequency exceeds a second preset value.
4. The respiratory monitoring device of any one of claims 1 and 2, wherein determining whether the user is in a snoring state based on the electrical signal provided by the sound collection unit comprises:
carrying out autocorrelation processing on the electric signal of the sound;
performing time-frequency domain conversion on the electrical signal subjected to the autocorrelation processing to obtain a frequency domain signal;
determining a maximum amplitude in the frequency domain signal, determining that the user is in a snoring state when an amplitude at 2 times a frequency corresponding to the maximum amplitude is not less than 1/3 of the maximum amplitude.
5. The respiratory monitoring device of claim 3, wherein the microprocessor is further configured to:
performing autocorrelation processing on the body motion pressure signal;
carrying out time-frequency domain conversion on the body motion pressure signal subjected to autocorrelation processing to obtain a frequency domain signal;
removing fundamental frequency and frequency multiplication components from the frequency domain signal, and then converting the frequency domain signal back to the time domain to obtain a second bulk pressure signal;
wherein the user's breathing frequency is determined based on the second volumetric pressure signal.
6. The respiratory monitoring device of claim 2, wherein the first preset value is 5%.
7. The respiratory monitoring device of claim 3, wherein the irregularity in respiratory rate comprises a rate of increase in respiratory rate, and the predetermined range of the second predetermined value is 15% -30%.
8. The respiratory monitoring device of claim 1, wherein the microprocessor is further configured to:
turning off the apnea related parameter acquisition unit and the wake-up unit in case it is determined that the user is no longer in the snoring state.
9. The respiratory monitoring device of claim 1, wherein a sound collection unit is configured to sense and convert respiratory sounds of the user into electrical signals at predetermined time intervals.
10. The respiratory monitoring device of claim 1, wherein the wake-up unit comprises a light emitting diode configured to emit light towards the eyes of the user to wake-up the user.
11. The respiratory monitoring device of claim 1, wherein the carrier member includes a front portion adapted to cover the eyes of the user and two side straps to which a tail portion is securable to one another; wherein the content of the first and second substances,
the anterior portion includes two first portions corresponding to both eyes, two second portions surrounding the respective first portions for fitting to the temple, and a connecting portion connecting the two second portions.
12. The respiratory monitoring device of claim 11, wherein a sound collection unit is disposed at the connection portion;
the blood oxygen signal acquisition unit is arranged at one side of the second part close to the side strip to sense the photoplethysmal signal of the temple of the user;
the wake-up unit is arranged on the opposite side of the front portion with respect to the blood oxygen signal acquisition unit.
13. The respiratory monitoring device of claim 11, wherein the side straps include a slack portion, and the body movement pressure acquisition unit is a thin film pressure sensor in the form of a band and is embedded in a portion of the side straps other than the slack portion.
14. The respiratory monitoring device of any one of claims 1 to 13, further comprising:
a storage unit configured to store sleep-related data of the user;
a first wireless communication unit configured to transmit the sleep-related data.
15. A respiratory monitoring system comprising a respiratory monitoring device as claimed in claim 14 and a terminal, the terminal comprising:
a second wireless communication unit configured to receive the sleep-related data;
a processor configured to process the sleep-related data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243242.6A CN111820867B (en) | 2019-03-28 | 2019-03-28 | Respiration monitoring device and system |
| PCT/CN2020/075954 WO2020192317A1 (en) | 2019-03-28 | 2020-02-20 | Breathing monitoring device, system and method, and intelligent eye mask |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243242.6A CN111820867B (en) | 2019-03-28 | 2019-03-28 | Respiration monitoring device and system |
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| CN111820867A CN111820867A (en) | 2020-10-27 |
| CN111820867B true CN111820867B (en) | 2022-04-08 |
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| CN201910243242.6A Active CN111820867B (en) | 2019-03-28 | 2019-03-28 | Respiration monitoring device and system |
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| CN113040714B (en) * | 2021-03-09 | 2023-05-02 | 深圳市科瑞康实业有限公司 | Method and device for monitoring apnea and transdermally electrically stimulating |
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| CN111820867A (en) | 2020-10-27 |
| WO2020192317A1 (en) | 2020-10-01 |
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