CN114246572A - Earphone set - Google Patents
Earphone set Download PDFInfo
- Publication number
- CN114246572A CN114246572A CN202111446147.XA CN202111446147A CN114246572A CN 114246572 A CN114246572 A CN 114246572A CN 202111446147 A CN202111446147 A CN 202111446147A CN 114246572 A CN114246572 A CN 114246572A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- monitoring
- module
- heart rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 159
- 238000007781 pre-processing Methods 0.000 claims abstract description 56
- 230000008602 contraction Effects 0.000 claims abstract description 14
- 230000024883 vasodilation Effects 0.000 claims abstract description 14
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 12
- 206010047141 Vasodilatation Diseases 0.000 claims abstract description 10
- 230000005236 sound signal Effects 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 230000007613 environmental effect Effects 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 210000000613 ear canal Anatomy 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000033764 rhythmic process Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003862 health status Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013186 photoplethysmography Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
Abstract
The invention discloses an earphone, which comprises: the device comprises a signal acquisition module, a signal preprocessing module and a counting module, wherein the signal acquisition module is electrically connected with the signal preprocessing module; the signal acquisition module is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode; the signal preprocessing module is used for preprocessing the monitoring electric signal to obtain a preprocessed signal; and the counting module is used for determining the heart rate of the user according to the preprocessing signal. In the earphone provided by the invention, the signal acquisition module acquires the monitoring electric signal of the user through the signal pickup electrode, the signal preprocessing module preprocesses the monitoring electric signal to obtain the preprocessing signal, and the counting module determines the heart rate of the user according to the preprocessing signal, so that the problem of large heart rate error in the prior art through a photoelectric detection method is solved, and the heart rate monitoring accuracy is improved.
Description
Technical Field
The invention relates to the technical field of wearable equipment, in particular to an earphone.
Background
Nowadays, people's standard of living is increasing day by day, also receives more and more attention to self health status, also puts forward new requirement to the timely understanding of self health status, and wherein the rhythm of the heart is as an index that can directly perceived reflection people's health status, often receives people's attention, and the technological means and the corresponding equipment of rhythm of the heart monitoring are constantly emerging yet.
Wherein, the wrist-watch or the bracelet that can realize the rhythm of the heart monitoring are the wearing equipment that present stage is more common, have also obtained the wide use. However, wearing products at the present stage generally use a photoelectric detection method of photoplethysmography (PPG), which irradiates a light source into skin tissue of a person, changes an optical signal according to a periodic change of blood flow to change an absorption degree of incident light, and converts the optical signal into an electrical signal, so as to obtain a pulse rate to obtain a heart rate.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an earphone and aims to solve the technical problem that the heart rate monitoring accuracy is low in the prior art.
To achieve the above object, the present invention provides a headset, comprising: the device comprises a signal acquisition module, a signal preprocessing module and a counting module, wherein the signal acquisition module is electrically connected with the signal preprocessing module, and the signal preprocessing module is electrically connected with the counting module;
the signal acquisition module is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode;
the signal preprocessing module is used for preprocessing the monitoring electric signal to obtain a preprocessed signal;
and the counting module is used for determining the heart rate of the user according to the preprocessing signal.
Optionally, the signal acquisition module includes an electrode unit and a collection unit, and the electrode unit is electrically connected to the collection unit;
the electrode unit is used for acquiring a plurality of pickup electric signals of a user through the signal pickup electrode;
the collecting unit is used for aligning the plurality of picked-up electric signals on a time sequence, collecting the plurality of picked-up electric signals aligned on the time sequence, and obtaining the monitoring electric signals when the blood vessels of the user relax and contract.
Optionally, the signal preprocessing module includes an amplifying unit, a decoupling unit, a low-pass filtering unit and an analog-to-digital converting unit, the amplifying unit is electrically connected with the decoupling unit, the decoupling unit is electrically connected with the low-pass filtering unit, and the low-pass filtering unit is electrically connected with the analog-to-digital converting unit;
the amplifying unit is used for amplifying the monitoring electric signal to obtain a monitoring amplified signal;
the decoupling unit is used for performing signal decoupling on the monitoring amplification signal to obtain a monitoring superposition signal;
the low-pass filtering unit is used for filtering a high-frequency signal in the monitoring superposed signal to obtain a low-frequency monitoring superposed signal;
and the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the low-frequency monitoring superposition signal to obtain a preprocessing signal.
Optionally, the counting module includes a collecting unit, a differencing unit, a denoising unit and a counter, the collecting unit is electrically connected to the differencing unit, the differencing unit is electrically connected to the denoising unit, and the denoising unit is electrically connected to the counter;
the acquisition unit is used for acquiring an environmental sound signal in a target environment;
the difference making unit is used for making a difference between the environment sound signal and the sound signal output by the driver to obtain an interference signal;
the denoising unit is used for subtracting the preprocessing signal from the interference signal to obtain a heart rate pickup signal;
the counter is used for counting the number of wave crests of the heart rate pickup signals and determining the heart rate of the user according to the number of the wave crests and the monitoring duration.
Optionally, the denoising unit is further configured to subtract the preprocessed signal from the interference signal to obtain a difference signal;
the denoising unit is further configured to perform digital-to-analog conversion on the difference signal to obtain a difference analog signal, and perform filtering processing on the difference analog signal to obtain a heart rate pickup signal.
Optionally, the earphone further comprises a control module, and the control module is electrically connected with the signal acquisition module;
the control module is used for outputting a monitoring signal according to the received control signal;
the signal acquisition module is also used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode when the monitoring signals are at a high level.
Optionally, the control module includes a controller, a timing unit and a timing unit, the controller is electrically connected to the signal acquisition module, the timing unit is electrically connected to the signal acquisition module, and the timing unit is electrically connected to the controller;
the controller is used for receiving a switching electric signal input by the monitoring electrode switch and outputting a monitoring signal according to the switching electric signal;
the timing unit is used for timing the time length of the heart rate monitoring to obtain the monitoring time length;
and the timing unit is used for monitoring the heart rate of the user in a timing mode by controlling the clock unit of the controller.
Optionally, the earphone further comprises a sound production module, and the sound production module is electrically connected with the counting module;
the voice module is used for outputting voice prompt of the heart rate according to the heart rate of the user when the voice broadcasting function is started.
Optionally, a signal pick-up electrode is provided in the housing of the earpiece proximate the ear canal portion.
Optionally, there are several signal pickup electrodes, and several signal pickup electrodes are randomly distributed.
The invention proposes to propose a headset comprising: the device comprises a signal acquisition module, a signal preprocessing module and a counting module, wherein the signal acquisition module is connected with the signal preprocessing module, and the signal preprocessing module is connected with the counting module; the signal acquisition module is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode; the signal preprocessing module is used for preprocessing the monitoring electric signal to obtain a preprocessed signal; and the counting module is used for determining the heart rate of the user according to the preprocessing signal. In the earphone provided by the invention, the signal acquisition module acquires the monitoring electric signal of the user through the signal pickup electrode, the signal preprocessing module preprocesses the monitoring electric signal to obtain the preprocessing signal, and the counting module determines the heart rate of the user according to the preprocessing signal, so that the problem of large heart rate error in the prior art through a photoelectric detection method is solved, and the heart rate monitoring accuracy is improved.
Drawings
Fig. 1 is a functional block diagram of a first embodiment of the headset of the present invention;
fig. 2 is a block diagram of a first embodiment of the headset of the present invention;
fig. 3 is a functional block diagram of a signal preprocessing module of a second embodiment of the earphone according to the present invention;
fig. 4 is a functional block diagram of a counting module of a third embodiment of the earphone according to the present invention;
fig. 5 is a schematic diagram of a third embodiment of the earphone according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides an earphone, and referring to fig. 1, fig. 1 is a functional module schematic diagram of a first embodiment of an earphone according to the present invention.
In this embodiment, the earphone includes: the device comprises a signal acquisition module 10, a signal preprocessing module 20 and a counting module 30, wherein the signal acquisition module 10 is electrically connected with the signal preprocessing module 20, and the signal preprocessing module 20 is electrically connected with the counting module 30;
the signal acquisition module 10 is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode.
It is understood that the signal pick-up electrode may be a conductive electrode capable of sensing a weak electrical signal; when the heartbeat pulses, the blood vessels can be caused to contract and relax, so that vibration is caused, and weak electric signals are generated; the monitoring electrical signals may be electrical signals collected by the signal pickup electrodes during vasodilation and contraction of the user.
In a specific implementation, when the heart rate is monitored through the earphone, the signal pickup electrode is close to the skin of the user, and the signal pickup electrode is used for collecting electric signals at the skin of the user during vasodilation and contraction of the user.
The signal preprocessing module 20 is configured to preprocess the monitoring electrical signal to obtain a preprocessed signal.
It can be understood that the interference signal present in the monitoring electrical signal collected by the signal pickup electrode may affect the accuracy of the heart rate monitoring, and the preprocessing may be to process the monitoring electrical signal collected by the signal pickup electrode to remove the interference signal in the monitoring electrical signal.
The counting module 30 is configured to determine the heart rate of the user according to the pre-processing signal.
It will be appreciated that the counting module 30 may determine the heart rate of the user from the number of peaks or troughs of the pre-processed signal.
Further, referring to fig. 2, since some signal pickup electrodes may have problems during signal acquisition, resulting in incomplete acquired electrical signals, in order to improve the accuracy of signal acquisition, the signal acquisition module 10 includes an electrode unit 101 and a collecting unit 102, where the electrode unit 101 is electrically connected to the collecting unit 102;
the electrode unit 101 is configured to collect a plurality of pickup electrical signals of a user through the signal pickup electrode.
It is understood that the electrode unit 101 may include a plurality of signal pickup electrodes disposed on a side close to the skin of the user, wherein the plurality of signal pickup electrodes may be disposed randomly or according to a predetermined rule; the preset rule includes that the signal pickup electrodes are equally spaced, and the connecting lines between the signal pickup electrodes form a certain shape, such as a triangle or a rectangle, and the specific arrangement manner of the signal pickup electrodes can be determined according to specific situations, which is not limited in this embodiment.
In a specific implementation, the signal pickup electrode can be arranged at the position where the earphone shell is close to the auditory canal, and when a user wears the earphone, the signal pickup electrode is used for collecting electric signals generated by the skin on the inner side of the auditory canal wall.
It should be understood that the picked-up electrical signal may be an electrical signal collected by each signal pickup electrode at the skin of the user when the blood vessel of the user is dilated or contracted, and several signal pickup electrodes of the electrode unit 101 may collect several picked-up electrical signals.
The collecting unit 102 is configured to align the plurality of picked-up electrical signals in a time series, and collect the plurality of picked-up electrical signals aligned in the time series to obtain the monitoring electrical signals during vasodilation and contraction of the user.
It should be understood that, the starting time of the electrical signal acquisition of each signal pickup electrode may be deviated, and the time-series alignment of the plurality of picked-up electrical signals may be the alignment of the starting time of each picked-up electrical signal, so that each picked-up electrical signal has the same starting time, and the waveforms of the plurality of picked-up electrical signals aligned in the time-series correspond at the same time.
It will be appreciated that the signal assembling may be a union of the picked electrical signals, and the signal assembling the plurality of picked electrical signals aligned in time series may be a union of the picked electrical signals aligned in time series.
Further, in order to improve the accuracy of signal pickup, a signal pickup electrode is provided in a portion of the housing of the earphone proximate to the ear canal. The number of the signal pickup electrodes is a plurality, and the signal pickup electrodes are randomly distributed.
In a specific implementation, for example, the electrode unit includes 2 signal pickup electrodes, which are an electrode 1 and an electrode 2, the electrode 1 acquires the pickup electrical signal 1 at a time 1.1, the electrode 2 acquires the pickup electrical signal 2 at a time 1.12, the pickup electrical signal 1 has 2 peaks, the pickup electrical signal 2 has 3 peaks, the time 1.1 at which the pickup electrical signal 1 is to be picked up and the time 1.12 at which the pickup electrical signal is to be picked up are aligned in time series, and then the 2 pickup electrical signals have the same start time, the starting time can be set to be 0, the wave crests corresponding to the picked electric signal 1 are time 1 and time 3, the wave crests corresponding to the picked electric signal 2 are time 2, time 3 and time 4, the picked electric signal 1 and the picked electric signal 2 are subjected to signal collection, namely the waveforms of the two signals are compared, and the two picked electric signals are merged to obtain the monitoring electric signal with 4 wave crests.
Further, with continued reference to fig. 2, in order to control the time when the headset performs the heart rate monitoring, the headset further includes a control module 40, and the control module 40 is electrically connected to the signal acquisition module 10;
and the control module 40 is configured to output a monitoring signal according to the received control signal.
It can be understood that the control signal may be a signal for controlling the signal acquisition module to acquire the monitoring electrical signal; the control signal comprises two generation modes: 1. touch control generation, wherein a conductive electrode can be arranged to serve as a heart rate monitoring switch, and a control signal is output when the heart rate monitoring switch is touched; 2. the control terminal controls generation, the control terminal is wirelessly connected with the earphone, for example, connected through bluetooth or a wireless network, and sends the control signal through wireless communication, and any one of the above two control signal generation modes may be adopted, which is not limited in this embodiment.
It should be understood that the control module 40 outputs a monitoring signal to the signal acquisition module upon receiving the control signal.
The signal collecting module 10 is further configured to collect, through the signal pickup electrode, a monitoring electrical signal during vasodilation and contraction of the user when the monitoring signal is at a high level.
In a specific implementation, the signal acquisition module 10 acquires the monitoring electrical signal during vasodilatation and contraction of the user through the signal pickup electrode when the received monitoring signal is at a high level, and stops signal acquisition if the received monitoring signal is at a low level after acquiring the monitoring electrical signal for a period of time.
Further, with continued reference to fig. 2, in order to accurately control signal acquisition, the control module 40 includes a controller 401, a timing unit 402, and a timing unit 403, the controller 401 is electrically connected to the signal acquisition module 10, the timing unit 402 is electrically connected to the signal acquisition module 10, and the timing unit 403 is electrically connected to the controller 401;
the controller 401 is configured to receive a switching electrical signal input by the monitoring electrode switch, and output a monitoring signal according to the switching electrical signal.
It can be understood that the monitoring electrode switch can be a switch for controlling heart rate monitoring, when the monitoring electrode switch is turned on, heart rate monitoring is carried out, and when the monitoring electrode switch is turned off, the heart rate monitoring is stopped.
In the specific implementation, the monitoring electrode switch is touched for the first time, the monitoring electrode switch is turned on, the switching electric signal is input into the controller, an I/O switch in the controller presents a high level, the controller outputs a monitoring signal, and the signal acquisition module acquires the monitoring electric signal; and touching the monitoring electrode switch again, disconnecting the monitoring electrode switch, inputting the switch electric signal into the controller, enabling the I/O switch in the controller to present a low level, outputting the monitoring signal by the controller, and stopping the signal acquisition module from acquiring the signal.
The timing unit 402 is configured to time a duration of the heart rate monitoring to obtain a monitoring duration.
In a specific implementation, the timing unit starts timing when the signal acquisition module starts to acquire signals, and stops timing when the signal acquisition module stops acquiring signals, wherein the total duration is the monitoring duration.
The timing unit 403 is configured to perform timing monitoring on the heart rate of the user by controlling a clock unit of the controller.
In a specific implementation, the timing unit 403 may set the monitoring duration and the monitoring time point by controlling a clock unit of the controller, so as to implement the timing monitoring of the heart rate of the user.
Further, with continued reference to fig. 2, the headset further includes a sound module 50, wherein the sound module 50 is electrically connected to the counting module 30; and the sound production module 50 is used for outputting the voice prompt of the heart rate according to the heart rate of the user when the voice broadcast function is started.
In the specific implementation, the on and off of the voice broadcasting function can be set through a control terminal, wherein the control terminal comprises a mobile phone, a tablet, a personal computer and the like; when the voice broadcast function is opened, the sound production module conveys the heart rate of the user to the user in a voice signal mode.
The present embodiment proposes a headset, comprising: the device comprises a signal acquisition module, a signal preprocessing module and a counting module, wherein the signal acquisition module is connected with the signal preprocessing module, and the signal preprocessing module is connected with the counting module; the signal acquisition module is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode; the signal preprocessing module is used for preprocessing the monitoring electric signal to obtain a preprocessed signal; and the counting module is used for determining the heart rate of the user according to the preprocessing signal. Because in the earphone that this embodiment provided, signal acquisition module passes through the monitoring signal of telecommunication of signal pickup electrode collection user, and signal preprocessing module obtains the preliminary treatment signal to the preliminary treatment of monitoring signal of telecommunication, and the user's rhythm of the heart is confirmed according to the preliminary treatment signal to the count module, has solved among the prior art through the problem that the photoelectric detection method monitoring rhythm of the heart error is big, has improved the degree of accuracy of rhythm of the heart monitoring.
Referring to fig. 3, fig. 3 is a functional block diagram of a second embodiment of the earphone according to the present invention.
Based on the first embodiment, in this embodiment, the signal preprocessing module 20 includes an amplifying unit 201, a decoupling unit 202, a low-pass filtering unit 203, and an analog-to-digital converting unit 204, where the amplifying unit 201 is electrically connected to the decoupling unit 202, the decoupling unit 202 is electrically connected to the low-pass filtering unit 203, and the low-pass filtering unit 203 is electrically connected to the analog-to-digital converting unit 204;
the amplifying unit 201 is configured to amplify the monitoring electrical signal to obtain a monitoring amplified signal.
It can be understood that the monitoring electrical signal may be a voltage signal, which needs to be amplified because the voltage signal generated by vibration during vasodilatation and contraction is small; amplifying the monitoring electrical signal to obtain a monitoring amplified signal, wherein the monitoring amplified signal can be obtained by amplifying the monitoring electrical signal through a differential amplification circuit; compared with the monitoring electric signal, the monitoring amplified signal has increased signal amplitude and equal signal frequency.
The decoupling unit 202 is configured to perform signal decoupling on the monitoring amplified signal to obtain a monitoring superimposed signal.
It can be understood that the signal collected by the signal pickup electrode is a coupling signal of multiple signals, so the monitoring amplification signal is also a coupling signal of multiple signals; the signal decoupling is carried out on the monitoring amplification signal to obtain the monitoring superposition signal, wherein the signal decoupling can be carried out on the monitoring amplification signal through a decoupler to obtain a simple superposition signal of various signals, namely the monitoring superposition signal.
The low-pass filtering unit 203 is configured to filter a high-frequency signal in the monitoring superimposed signal to obtain a low-frequency monitoring superimposed signal.
It can be understood that, because the number of beats in the heart unit time of the human is limited, the voltage signal corresponding to the heart rate is a low-frequency signal, the monitoring superposed signal can be low-pass filtered by the low-frequency filter, the high-frequency signal is filtered, and the low-frequency monitoring superposed signal is obtained, so that the influence of the interference signal on the heart rate monitoring result is reduced.
The analog-to-digital conversion unit 204 is configured to perform analog-to-digital conversion on the low-frequency monitoring superposition signal to obtain a preprocessed signal.
It should be understood that the low-frequency monitoring superimposed signal is an analog signal, and the analog-to-digital conversion unit 204 performs analog-to-digital conversion on the low-frequency monitoring superimposed signal to obtain a low-frequency monitoring superimposed digital signal, i.e., a preprocessed signal.
In the specific implementation, the amplifying unit amplifies the monitoring electric signal through the differential amplifying circuit to obtain a monitoring amplified signal, the monitoring amplified signal is a coupling signal of multiple signals, the decoupling unit decouples the monitoring amplified signal through the decoupler to obtain a simple superposed signal of the multiple signals, namely a monitoring superposed signal, the low-pass filtering unit filters a high-frequency signal in the monitoring superposed signal through the low-pass filter to obtain a low-frequency monitoring superposed signal, the low-frequency monitoring superposed signal is an analog signal, and the analog-to-digital conversion unit performs analog-to-digital conversion on the low-frequency monitoring superposed signal to obtain a corresponding digital signal, namely a preprocessed signal.
The signal preprocessing module comprises an amplifying unit, a decoupling unit, a low-pass filtering unit and an analog-to-digital conversion unit, wherein the amplifying unit is electrically connected with the decoupling unit, the decoupling unit is electrically connected with the low-pass filtering unit, and the low-pass filtering unit is electrically connected with the analog-to-digital conversion unit; the amplifying unit is used for amplifying the monitoring electric signal to obtain a monitoring amplified signal; the decoupling unit is used for carrying out signal decoupling on the monitoring amplification signal to obtain a monitoring superposition signal; the low-pass filtering unit is used for filtering the high-frequency signal in the monitoring superposed signal to obtain a low-frequency monitoring superposed signal; and the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the low-frequency monitoring superposition signal to obtain a preprocessed signal. According to the embodiment, the amplification unit is used for amplifying the detection electric signal to obtain the monitoring amplification signal, the decoupling unit is used for decoupling the detection amplification signal to obtain the monitoring superposition signal, the low-pass filtering unit is used for filtering out the high-frequency signal in the monitoring superposition signal to obtain the low-frequency monitoring superposition signal, and the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the low-frequency monitoring superposition signal to obtain the preprocessing signal, so that the influence of the interference signal on the heart rate monitoring result is reduced, and the accuracy of heart rate monitoring is improved.
Referring to fig. 4, fig. 4 is a functional block diagram of a third embodiment of the earphone according to the present invention.
Based on the above embodiments, in this embodiment, the counting module 30 includes a collecting unit 301, a differencing unit 302, a denoising unit 303 and a counter 304, the collecting unit 301 is electrically connected to the differencing unit 302, the differencing unit 302 is electrically connected to the denoising unit 303, and the denoising unit 303 is electrically connected to the counter 304;
the collecting unit 301 is configured to collect an environmental sound signal in a target environment.
It can be understood that when a user wears the earphone, the heart rate of the user is monitored, and partial sound signals emitted by the earphone loudspeaker are reflected inside the auditory canal to cause the inner wall of the auditory canal to vibrate so as to generate voltage signals; because bone conduction mechanism, the earphone can take place the block effect, can transmit user's sound such as speaking sound, chewing sound and swallowing into the duct for the duct inner wall vibrates in low frequency part and produces voltage signal, and the voltage signal that above-mentioned two kinds of condition produced is interference signal, and above-mentioned two kinds of interference signal can be gathered by heart rate collection module when heart rate is monitored.
It should be understood that the target environment may be the internal environment of the user's ear canal; the ambient sound signal may be a sound signal of the environment inside the ear canal of the user; the single feedback noise reduction microphone can be used for collecting the environment sound signal in the ear canal of the user; the ambient sound signal includes the above two interference signals and the sound signal output by the earphone speaker.
The difference unit 302 is configured to perform a difference between the environmental sound signal and the sound signal output by the driver to obtain an interference signal.
It should be understood that the sound signal output by the driver may be a signal output by the driver for controlling the speaker to output sound.
It can be understood that, the step of differencing the environment sound signal and the sound signal output by the driver may be converting the environment sound signal and the sound signal output by the driver into digital signals, and subtracting the signal amplitude of the corresponding frequency point in the digital signal of the sound signal output by the driver from the signal amplitude of each frequency point in the digital signal of the environment sound signal to obtain the digital signal of the interference signal; the difference between the environmental sound signal and the sound signal output by the driver may be obtained by subtracting the signal amplitude of the sound signal output by the driver at the corresponding time from the signal amplitude corresponding to the environmental sound signal at each time according to the time axis of the environmental sound signal and the time axis of the sound signal output by the driver.
The denoising unit 303 is configured to perform a difference between the pre-processing signal and the interference signal to obtain a heart rate pickup signal.
It should be understood that the heart rate pickup signal may be obtained by subtracting the signal amplitude of the digital signal corresponding to the interference signal from the signal amplitude of each frequency point of the pre-processed signal.
It can be understood that the heart rate pickup signal can also be converted into an analog signal, and the converted heart rate pickup signal is filtered again through the low-pass filter, so as to further filter the high-frequency band signal.
The counter 304 is configured to count the number of peaks of the heart rate pickup signal, and determine the heart rate of the user according to the number of peaks and the monitoring duration.
It should be understood that the heart rate pickup signal can be divided into two paths of signals, wherein one path of signal reaches the memory for storage, the other path of signal passes through the counter, the counter counts the number of wave peaks in the heart rate pickup signal, and the heart rate of the user can be obtained by dividing the counted number of wave peaks by the monitoring duration.
Further, in order to improve the accuracy of heart rate monitoring, the denoising unit 303 is further configured to perform a difference between the pre-processed signal and the interference signal to obtain a difference signal; the denoising unit 303 is further configured to perform digital-to-analog conversion on the difference signal to obtain a difference analog signal, and perform filtering processing on the difference analog signal to obtain a heart rate pickup signal.
It can be understood that the denoising unit performs a difference between the preprocessed signal and the interference signal to obtain a difference signal, performs an analog-to-digital conversion on the difference signal to obtain a difference analog signal, and filters a high-frequency band signal in the difference analog signal through a low-pass filter to obtain a heart rate pickup signal.
In a specific implementation, referring to fig. 5, for example, the monitoring electrode switch or the mobile phone terminal outputs a control signal, the control module outputs the monitoring signal to the signal acquisition module when receiving the control signal, the signal acquisition module acquires the picked electrical signals through 3 signal pickup electrodes, the collection unit collects the three picked electrical signals to obtain the monitoring electrical signals, and the monitoring electrical signals are preprocessed to obtain preprocessed signals; the single feedback noise reduction microphone FB MIC collects environmental sound signals, performs analog-to-digital conversion on the environmental sound signals, then makes a difference with digital signals corresponding to sound signals output by a Driver, the signals subjected to the difference make a difference with preprocessed signals after passing through a low-pass Filter Filter, the signals subjected to the difference make a difference through the low-pass Filter to obtain heart rate pickup signals, one path of the heart rate pickup signals are stored in a storage, the other path of the heart rate pickup signals pass through a counter, and the counter determines the heart rate of a user according to the number of wave crests of the signals and monitoring duration.
In the earphone provided by the embodiment, the counting module comprises a collecting unit, a difference making unit, a denoising unit and a counter, wherein the collecting unit is electrically connected with the difference making unit, the difference making unit is electrically connected with the denoising unit, and the denoising unit is electrically connected with the counter; the acquisition unit is used for acquiring an environmental sound signal in a target environment; the difference making unit is used for making a difference between the environment sound signal and the sound signal output by the driver to obtain an interference signal; the denoising unit is used for subtracting the preprocessing signal from the interference signal to obtain a heart rate pickup signal; and the counter is used for counting the number of wave crests of the heart rate pickup signals and determining the heart rate of the user according to the number of the wave crests and the monitoring duration. Because this embodiment is through the environmental sound signal in the acquisition unit collection target environment, make the difference unit and make the difference with the sound signal of driver output and obtain interference signal, the unit of making a noise makes the difference with pre-processing signal and interference signal and obtains heart rate pickup signal, and the count unit confirms user's heart rate according to the crest quantity in the heart rate pickup signal and monitoring duration, can go the interference signal in the pre-processing signal, has improved user's heart rate monitoring's the degree of accuracy.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An earphone, characterized in that the earphone comprises: the device comprises a signal acquisition module, a signal preprocessing module and a counting module, wherein the signal acquisition module is electrically connected with the signal preprocessing module, and the signal preprocessing module is electrically connected with the counting module;
the signal acquisition module is used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode;
the signal preprocessing module is used for preprocessing the monitoring electric signal to obtain a preprocessed signal;
and the counting module is used for determining the heart rate of the user according to the preprocessing signal.
2. The headset of claim 1, wherein the signal acquisition module comprises an electrode unit and a collecting unit, the electrode unit being electrically connected to the collecting unit;
the electrode unit is used for acquiring a plurality of pickup electric signals of a user through the signal pickup electrode;
the collecting unit is used for aligning the plurality of picked-up electric signals on a time sequence, collecting the plurality of picked-up electric signals aligned on the time sequence, and obtaining the monitoring electric signals when the blood vessels of the user relax and contract.
3. The earphone according to claim 1, wherein the signal preprocessing module comprises an amplifying unit, a decoupling unit, a low-pass filtering unit and an analog-to-digital converting unit, the amplifying unit is electrically connected with the decoupling unit, the decoupling unit is electrically connected with the low-pass filtering unit, and the low-pass filtering unit is electrically connected with the analog-to-digital converting unit;
the amplifying unit is used for amplifying the monitoring electric signal to obtain a monitoring amplified signal;
the decoupling unit is used for performing signal decoupling on the monitoring amplification signal to obtain a monitoring superposition signal;
the low-pass filtering unit is used for filtering a high-frequency signal in the monitoring superposed signal to obtain a low-frequency monitoring superposed signal;
and the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the low-frequency monitoring superposition signal to obtain a preprocessing signal.
4. The headset of claim 1, wherein the counting module comprises a collecting unit, a differencing unit, a denoising unit, and a counter, the collecting unit is electrically connected with the differencing unit, the differencing unit is electrically connected with the denoising unit, and the denoising unit is electrically connected with the counter;
the acquisition unit is used for acquiring an environmental sound signal in a target environment;
the difference making unit is used for making a difference between the environment sound signal and the sound signal output by the driver to obtain an interference signal;
the denoising unit is used for subtracting the preprocessing signal from the interference signal to obtain a heart rate pickup signal;
the counter is used for counting the number of wave crests of the heart rate pickup signals and determining the heart rate of the user according to the number of the wave crests and the monitoring duration.
5. The headphone of claim 4, wherein the denoising unit is further configured to subtract the pre-processed signal from the interference signal to obtain a difference signal;
the denoising unit is further configured to perform digital-to-analog conversion on the difference signal to obtain a difference analog signal, and perform filtering processing on the difference analog signal to obtain a heart rate pickup signal.
6. The headset of any one of claims 1-5, wherein the headset further comprises a control module electrically connected to the signal acquisition module;
the control module is used for outputting a monitoring signal according to the received control signal;
the signal acquisition module is also used for acquiring monitoring electric signals of the vasodilatation and the contraction of the blood vessels of the user through the signal pickup electrode when the monitoring signals are at a high level.
7. The headset of claim 6, wherein the control module comprises a controller, a timing unit, and a timing unit, the controller being electrically connected to the signal acquisition module, the timing unit being electrically connected to the controller;
the controller is used for receiving a switching electric signal input by the monitoring electrode switch and outputting a monitoring signal according to the switching electric signal;
the timing unit is used for timing the time length of the heart rate monitoring to obtain the monitoring time length;
and the timing unit is used for monitoring the heart rate of the user in a timing mode by controlling the clock unit of the controller.
8. The headset of claim 6, further comprising a sound module electrically connected to the counting module;
the voice module is used for outputting voice prompt of the heart rate according to the heart rate of the user when the voice broadcasting function is started.
9. The earphone of claim 8 wherein the signal pick-up electrode is disposed in a portion of the housing of the earphone proximate the ear canal.
10. The headset of claim 9, wherein the plurality of signal pick-up electrodes is randomly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111446147.XA CN114246572A (en) | 2021-11-30 | 2021-11-30 | Earphone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111446147.XA CN114246572A (en) | 2021-11-30 | 2021-11-30 | Earphone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114246572A true CN114246572A (en) | 2022-03-29 |
Family
ID=80791436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111446147.XA Pending CN114246572A (en) | 2021-11-30 | 2021-11-30 | Earphone set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114246572A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244125A (en) * | 2014-08-25 | 2014-12-24 | 歌尔声学股份有限公司 | Heart rate detection method applied to ear phone and ear phone capable of detecting heart rate |
| CN204104104U (en) * | 2014-08-25 | 2015-01-14 | 纳米新能源（唐山）有限责任公司 | A kind of rhythm of the heart earphone and apply its system |
| CN107997751A (en) * | 2018-01-16 | 2018-05-08 | 华南理工大学 | A kind of intelligent earphone system based on biofeedback |
| KR20200019914A (en) * | 2020-02-05 | 2020-02-25 | 리치펄스 잉크. | Pulse wave measurement apparatus and measurement method therefor |
| CN113425276A (en) * | 2021-06-28 | 2021-09-24 | 南昌勤胜电子科技有限公司 | Heart rate monitoring method, earphone and computer storage medium |
| CN113555132A (en) * | 2020-04-24 | 2021-10-26 | 华为技术有限公司 | Multi-source data processing method, electronic device and computer-readable storage medium |
-
2021
- 2021-11-30 CN CN202111446147.XA patent/CN114246572A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244125A (en) * | 2014-08-25 | 2014-12-24 | 歌尔声学股份有限公司 | Heart rate detection method applied to ear phone and ear phone capable of detecting heart rate |
| CN204104104U (en) * | 2014-08-25 | 2015-01-14 | 纳米新能源（唐山）有限责任公司 | A kind of rhythm of the heart earphone and apply its system |
| CN107997751A (en) * | 2018-01-16 | 2018-05-08 | 华南理工大学 | A kind of intelligent earphone system based on biofeedback |
| KR20200019914A (en) * | 2020-02-05 | 2020-02-25 | 리치펄스 잉크. | Pulse wave measurement apparatus and measurement method therefor |
| CN113555132A (en) * | 2020-04-24 | 2021-10-26 | 华为技术有限公司 | Multi-source data processing method, electronic device and computer-readable storage medium |
| CN113425276A (en) * | 2021-06-28 | 2021-09-24 | 南昌勤胜电子科技有限公司 | Heart rate monitoring method, earphone and computer storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200178923A1 (en) | Acoustic respiratory monitoring systems and methods | |
| US4438772A (en) | Differential stethoscope | |
| AU2002307038B2 (en) | Ear microphone apparatus and method | |
| US20110125060A1 (en) | Acoustic respiratory monitoring systems and methods | |
| US9906872B2 (en) | Hearing-aid noise reduction circuitry with neural feedback to improve speech comprehension | |
| WO1991002487A1 (en) | Electronically augmented stethoscope with timing sound | |
| WO2009127547A1 (en) | Electronic stethoscope | |
| CN105982692A (en) | Multifunctional stethoscope for broadband parameter monitoring and implementation method of multifunctional stethoscope | |
| US20030208130A1 (en) | Chest piece for stethoscopes, and methods of utilizing stethoscopes for monitoring the physiological conditions of a patient | |
| JP6554215B2 (en) | Earpieces and earphones | |
| CN100456859C (en) | Wireless mobile communicating apparatus with comprehensive phsiological parameter measuring function | |
| US20180124525A1 (en) | Method and system for recognizing a beat with a hearing aid | |
| CN202211702U (en) | Wireless stethoscope | |
| CN114246572A (en) | Earphone set | |
| EP3021599A1 (en) | Hearing device having several modes | |
| RU2644546C1 (en) | Electronic medical stethoscope | |
| KR100918575B1 (en) | Multi-Vital Sign Wireless Monitoring System | |
| CN208822818U (en) | Desktop digital Intelligent stethoscope host and desktop digital Intelligent stethoscope | |
| CA1200887A (en) | Differential stethoscope | |
| CN203815483U (en) | Monitoring terminal and mobile electronic device | |
| KR20010097170A (en) | An Electronic Stethoscope | |
| CN106333706A (en) | Stethoscope system with functions of using fingerprint identification and intelligently selecting heart sound and lung sound | |
| CN111096762A (en) | Bluetooth heart sound auscultation device capable of timing | |
| CN213345710U (en) | Multifunctional digital auscultation device | |
| RU2173538C2 (en) | Electronic phonendoscope-stetoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |