CN108065940A - Continuous blood oxygen saturation rhythm of the heart ring with alarm - Google Patents
Continuous blood oxygen saturation rhythm of the heart ring with alarm Download PDFInfo
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- CN108065940A CN108065940A CN201610993990.2A CN201610993990A CN108065940A CN 108065940 A CN108065940 A CN 108065940A CN 201610993990 A CN201610993990 A CN 201610993990A CN 108065940 A CN108065940 A CN 108065940A
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000008280 blood Substances 0.000 title claims abstract description 36
- 210000004369 blood Anatomy 0.000 title claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 36
- 239000001301 oxygen Substances 0.000 title claims abstract description 36
- 230000033764 rhythmic process Effects 0.000 title claims abstract description 20
- 230000001133 acceleration Effects 0.000 claims abstract description 12
- 230000003044 adaptive effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 6
- 238000007405 data analysis Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000004217 heart function Effects 0.000 abstract 1
- 210000003811 finger Anatomy 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035479 physiological effects, processes and functions Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
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- 230000010354 integration Effects 0.000 description 1
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Classifications
-
- 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
- A61B5/14551—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 for measuring blood gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
-
- 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
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
- A61B5/02427—Details of sensor
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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
- A61B5/02—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
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
- A61B5/02427—Details of sensor
- A61B5/02433—Details of sensor for infrared radiation
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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
- A61B5/02—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
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- 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
- A61B5/14551—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 for measuring blood gases
- A61B5/14552—Details of sensors specially adapted therefor
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- 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
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- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/7455—Details of notification to user or communication with user or patient ; user input means characterised by tactile indication, e.g. vibration or electrical stimulation
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- 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
Abstract
The invention discloses a kind of continuous blood oxygen saturation rhythm of the heart rings with alarm, the device is based on flex circuit design, microprocessor module realizes continuous blood oxygen saturation and rhythm of the heart function by reception pipe and luminous tube, by using reflective and transmission-type integral type structure design, and the adaptive anti motion interference algorithm based on the design, realize the high accuracy of continuous blood oxygen saturation and heart rate, continuous measurement.The device realizes step function by acceleration module, and gesture control is realized according to data analysis, local datastore is supported to show and can data be wirelessly transferred to remote terminal, also according to the threshold value of setting vibrating motor and display module is controlled to realize data over run alarm sounds.
Description
Technical field
The invention discloses a kind of continuous blood oxygen saturation rhythm of the heart rings with alarm, are related to field of medical device,
It may be applicable to carry out a variety of places of blood oxygen saturation and rhythm of the heart for a long time.
Background technology
Detecting sphygmus and blood oxygen saturation reflects the content of oxygen in blood as heart rate, is all basic Human Physiology ginseng
Number, plays an important role in clinical analysis of diagnosis.The instrument for detecting blood oxygen saturation on the market at present is typically all to be based on
Photoplethysmographic graphical method, monitoring position is mostly finger tip, this scheme can the blood oxygen and pulse frequency of short time monitoring simultaneously, but
It is that can realize comfortable wearing, it is few suitable for the device of continuous blood oxygen saturation and rhythm of the heart for a long time.Common monitoring dress
It is heavier to put load, wear comfort is poor, it is difficult to meet the requirement of continuous pulse wave blood oxygen saturation and rhythm of the heart for a long time.
The research of the country such as CN201585990 and CN102961144 is attempted to detect blood oxygen saturation on finger and designed, mesh
The preceding product for also having related notion on the market, the principle of use are substantially detected based on transmission-type blood oxygen saturation, easily transported
Dynamic interference, it is difficult to realize accurate physiological parameter overload alarm prompting and local Real-time Feedback.
To solve the above-mentioned problems, a kind of continuous blood with alarm based on transmission-type, reflective integral system is designed
Oxygen saturation rhythm of the heart ring is very important.
The content of the invention
In view of the shortcomings of the prior art, present invention aims at provide a kind of continuous blood oxygen saturation with alarm
Rhythm of the heart ring, simple in structure, design is rationally, it can be achieved that meter step, the functions such as continuous blood oxygen saturation and rhythm of the heart are supported
Gesture control, local datastore is shown and Remote Data Analysis, and is prompted with data over run alert vibrations.
To achieve these goals, the present invention is to realize by the following technical solutions：Continuous blood oxygen with alarm is satisfied
With degree rhythm of the heart ring, including ring part and face part is guarded against, sets up separately in the ring face and is equipped with display module, in ring portion
Set up separately and be equipped with the first luminous tube, the second luminous tube, reception pipe, microprocessor module, vibrating motor and power supply；It is wherein described to connect
Closed tube, the first luminous tube, the second luminous tube, display module and vibrating motor are electrically connected respectively with the microprocessor module.
Further, first luminous tube and the position of the reception pipe are oppositely arranged, and form transmission-type structure so that
The light that first luminous tube is sent can penetrate finger and be received pipe reception；Second luminous tube and the position of the reception pipe
In the same side, reflective structure is formed so that the light that the second luminous tube is sent, which can reflect by finger and be received pipe, to be connect
It receives.
Further, the ring further includes the acceleration module for being arranged on the ring part, the acceleration module
It is electrically connected with the microprocessor module.
Further, the ring further includes radio receiving transmitting module, be arranged in the ring part and with micro- place
Manage the electrical connection of device module；The radio receiving transmitting module can be with remote terminal wireless communication.
Further, ring face part is designed using rigid material, and rigid material includes ceramics, metal or alloy, is guarded against
Face separates slot and sets display module；Ring part uses elastic material, and elastic material includes rubber, silica gel or plastics.
Further, first luminous tube and the second luminous tube are the light-emitting LED array with self-calibration function, the hair
Light LED array includes the LED light tube of at least two different wave lengths.
Further, first luminous tube is feux rouges and infrared light, and second luminous tube is feux rouges and green light.It shines
The wavelength of pipe can be the combination form of above-mentioned wavelength.
The method of continuous blood oxygen saturation heart rate is monitored using the ring to be included：
The signal by human body reflection that the reception pipe reception second luminous tube is sent is as noise reference signal
n0Source；The signal by human body transmission that the reception pipe reception first luminous tube is sent is as pending signal di；
Noise is removed using adaptive anti motion interference algorithm, measures blood oxygen saturation and heart rate.
Beneficial effects of the present invention：The present invention devises the integral system based on transmission-type, reflective principle, in this base
The adaptive anti motion interference algorithm designed on plinth realizes the high accuracy of continuous blood oxygen saturation and heart rate, continuous measurement.It guards against
It is local anti-in real time to refer to the alarm that can transfinite when beyond physiological parameter threshold by vibrating motor, display module progress physiological parameter
Feedback also can transmit warning information by low-consumption wireless transceiver module and remote terminal wireless connection, form prolonged analysis
Report.Alarming threshold can be set by remote terminal, and wireless module can access family healthcare center and complete alarm, prompt work(
Energy.Analysis report can carry out playing back prolonged monitoring data, and can further be used for and community hospital, central hospital pair
It connects.Ring is guarded against face part and is designed using rigid material, such as ceramics, metal, guards against face and separates slot, adds display module, ring
Part is using the design of material with certain elasticity, such as transparent rubber plus crystal.Therefore, the device comfortable wearing, Ke Yichang
Time Continuous pulse wave blood oxygen saturation, rhythm of the heart have stronger antijamming capability, have a extensive future.
Description of the drawings
Fig. 1 is the basic principle block diagram according to one embodiment of the present of invention.
Fig. 2 is the finger ring structure expanded schematic diagram according to one embodiment of the present of invention.
Fig. 3 is the ring form cut-away view according to one embodiment of the present of invention.
Fig. 4 is based on transmission-type, the adaptive anti-fortune of reflective integral system according to one embodiment of the present of invention
Dynamic algorithm of interference schematic diagram.
Fig. 5 is the gesture control schematic diagram according to one embodiment of the present of invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, with reference to
The drawings and the specific embodiments, the present invention is further explained.
With reference to Fig. 1-3, according to one embodiment of present invention using following technical scheme：Continuous blood oxygen saturation with alarm
Degree rhythm of the heart ring is formed by guarding against face part and ring part, is specifically included：Be arranged on ring part, reception pipe 1,
One luminous tube 2.1, the second luminous tube 2.2, acceleration module 3, microprocessor module 4, radio receiving transmitting module, 6 and of vibrating motor
Power supply and the display module 5 for being arranged on ring face part.The wearing mode of ring is recommended as forefinger, during actual installation, shows mould
Block 5 has certain gradient, and user can be facilitated to observe monitor value.Meanwhile 1 and first luminous tube 2.1 of reception pipe is oppositely arranged,
Alignment is spatially kept, to ensure that reception pipe can receive the light that luminous tube is sent, forms transmission-type module；1 He of reception pipe
Second luminous tube 2.2 is generally aligned in the same plane, and using physiology reflection effect, a part of light that the second luminous tube 2.2 is sent is anti-
It penetrates and enters reception pipe 1, form reflective module.The acquisition of blood oxygen saturation and heart rate signal is adopted by microprocessor module 4
Collect the voltage signal that reception pipe 1 generates, by anti motion interference algorithm process, result of calculation is stored in processor module 4
In memory, and it is shown on display module 5.Alternatively, result of calculation can also pass through low-consumption wireless transceiver module and remote terminal 7
Wireless connection transmits warning information, and prolonged analysis report is formed with accumulation.Alarm threshold can be set by remote terminal, nothing
Wire module can access family healthcare center and complete alarm, prompt facility.Microprocessor module 4 judges whether result of calculation surpasses
The threshold value of setting is crossed, it is local anti-in real time then to carry out physiological parameter alarm of transfiniting by vibrating motor 6, display module 5 beyond threshold value
Feedback.Microprocessor module 4 gathers the signal of acceleration module 3 and is analyzed, and realizes meter step and gesture control function, reference chart
5.For the result of calculation when in use if necessary to observation at that time, can be realized by modes such as upper and lower whipping fingers, micro- place
Device module 4 is managed by detecting worn finger in X, Y, the resultant acceleration of generation and the acceleration of single shaft in Z coordinate system are sentenced
Whether disconnected be more than the threshold value set, if it does, then the results are shown on display module 5, the calculating of resultant acceleration (SV) is pressed
It is calculated according to the following formula：
Wherein, ax, ay, azX, Y, the acceleration of Z axis are represented respectively.
The present invention devises the integral system based on transmission-type, reflective principle, and that designs on this basis is adaptive
Anti motion interference algorithm, algorithm schematic diagram is with reference to figure 4.In figure, diFor pending signal, diBy original signal siAnd noise signal
niTwo parts form and component is uncorrelated, pending signal diIt is gathered by transmission-type module.Noise reference signal n0By reflecting
Formula module gathers, and after sef-adapting filter, exports the assessment signal n of interferencei', n0With siUncorrelated but and niCorrelation,
Sef-adapting filter utilizes n0To estimate noise niSo that the output n of wave filteri' and noise niIt matches and uses ni' estimate to make an uproar
Sound, in main signal diIn subtract.diWith ni' subtract each other to obtain the output signal e of systemi, use eiIt, can be with as the best estimate of signal
It is represented with the following formula (1-1)：
ei=di-ni'=si+ni-ni' (1-1)
Work as ei≈siWhen, actual signal obtains best estimate, with this condition ni-ni' 0, i.e. n should be approximately equal toi-ni'≈
0.(1-1) formula both sides square can be obtained：
ei 2=(di-ni')2=si 2+(ni-ni')2+2×si(ni-ni') (1-2)
Due to siWith niAnd ni' uncorrelated, (1-2) formula both sides take expectation that can obtain the following formula (1-3):
In (1-3) formula, the best estimate of useful signal is it is required that E [(n in order to obtaini-ni')2] value minimum.In order to
The best estimate of signal is obtained it is required that E [(ni-ni')2] value minimum, using recursive least squares algorithm, least mean-square error
The adaptive filter algorithms such as algorithm and normalized mean squared error algorithm are handled.It is same by this transmission-type, reflective module
Step acquisition time signal simultaneously carries out adaptive anti motion interference algorithm process, finally obtains preferable signal quality.It embodies
In wavelength X1And wavelength X2With being more nearly glitch-free waveform morphology, corresponding alternating componentWith
Flip-flopIt is more accurate.
Further, in the present invention, the calculating of blood oxygen saturation is as shown by the following formula：
Wherein,For wavelength X1Alternating current-direct current ratio,For wavelength X2Alternating current-direct current ratio.A,B
For the coefficient by calibration, the blood oxygen that specific calibration method can generate standard by fluke multi-physiological-parameters simulator is satisfied
With degree signal, suitable curve is selected to carry out.
Rate calculation searches the crest value of the pulse wave signal in the cycle using the t1 times as detection cycle, preserves wave crest
The coordinate information of value according to corrugation pitch and amplitude, carries out preliminary availability deciding, removal is unusual to the crest value found
Wave crest, it is final according to obtained significant wave peak coordinate, calculate the average heart rate in detection cycle.
Fig. 2 shows preferred two kinds of specific form expanded schematic diagrams according to an embodiment of the invention, except with
The solution details of upper introduction, 7 be flexible PCB in figure, and 8 be hard circuit board, and 9 be rigid-flexible circuit board.Acceleration mould
Block 3, microprocessor module 4, radio receiving transmitting module, vibrating motor 6 and power module can be mounted on hard electricity according to formalness
On road plate or flexible circuit board.It is good to ensure that the material with certain elasticity can be selected on the inside of the ring and one side of skin contact
Contact, alternatively, the ring ring coats elastic material.It is for selection fixed that affiliated ring can set different sizes according to crowd
System.Installation is magnetic charging contact and is charged with facilitating on ring；Or installation wireless charging receiver, pass through the side of wireless charging
Formula charges.
Fig. 3 shows preferred three kinds of inner-structure reference schemes according to an embodiment of the invention, and described is micro-
Connection between processor module 4 and reception pipe 1 can be connected by integration module (AFE), and by flexible circuit, battery position
On processor module 4.First luminous tube 2.1 and the second luminous tube 2.2 can be single luminous tubes；Can also be that band is automatic
The light-emitting LED array of calibration function, and include the LED light tube of at least two two kinds of different wave lengths is, for example, feux rouges, it is infrared or
Green light according to the light-emitting LED array of signal quality adjust automatically detected, can realize the function of automatic preferred alignment.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of continuous blood oxygen saturation rhythm of the heart ring with alarm including ring part and guards against face part, feature exists
In setting up separately in the ring face and be equipped with display module (5), the first luminous tube (2.1), the second luminous tube are provided in ring part
(2.2), reception pipe (1), microprocessor module (4), vibrating motor (6) and power supply；Wherein
The reception pipe (1), the first luminous tube (2.1), the second luminous tube (2.2), display module (5) and vibrating motor (6) point
It is not electrically connected with the microprocessor module (4)；
First luminous tube (2.1) and the position of the reception pipe (1) are oppositely arranged so that the first luminous tube (2.1) is sent
Light can penetrate finger and be received pipe (1) reception；At the position of second luminous tube (2.2) and the reception pipe (1)
In the same side so that the light that the second luminous tube (2.2) is sent, which can be reflected by finger and be received pipe (1), to be received.
2. the continuous blood oxygen saturation rhythm of the heart ring according to claim 1 with alarm, which is characterized in that further include
The acceleration module (3) of the ring part is arranged on, the acceleration module (3) is electrically connected with the microprocessor module (4)
It connects.
3. the continuous blood oxygen saturation rhythm of the heart ring according to claim 1 with alarm, which is characterized in that further include
Radio receiving transmitting module is arranged in the ring part and is electrically connected with the microprocessor module (4)；The wireless receiving and dispatching mould
Block can be with remote terminal (7) wireless communication.
4. the continuous blood oxygen saturation rhythm of the heart ring according to claim 1 with alarm, which is characterized in that the ring
Face part is designed using rigid material, and rigid material includes ceramics, metal and/or alloy, is guarded against face and is separated slot and set display
Module (5)；Ring part is designed using elastic material, and elastic material includes rubber, silica gel and/or plastics.
5. the continuous blood oxygen saturation rhythm of the heart ring with alarm according to any one of claim 1-4, feature
It is, first luminous tube (2.1) and the second luminous tube (2.2) are the light-emitting LED array with self-calibration function, described to shine
LED array includes the LED light tube of at least two different wave lengths.
6. the continuous blood oxygen saturation rhythm of the heart ring according to claim 5 with alarm, which is characterized in that described
One luminous tube (2.1) is feux rouges and/or infrared light, and second luminous tube (2.2) is feux rouges and/or green light.
7. a kind of method that continuous blood oxygen saturation heart rate is monitored using claim 1-6 any one of them ring, feature
It is, including：
The signal by human body reflection that reception pipe (1) reception second luminous tube (2.2) sends is as noise reference
Signal n0Source；
The signal by human body transmission that reception pipe (1) reception first luminous tube (2.1) sends is as pending letter
Number di；
Noise is removed using adaptive anti motion interference algorithm, measures blood oxygen saturation and heart rate.
It is 8. the method according to the description of claim 7 is characterized in that described for calculating blood oxygen saturation and the signal of heart rate leads to
Cross the e in the following formulaiIt is assessed：
ei=di-ni'=si+ni-ni' (1-1)
Wherein, eiFor the best estimate of pulse wave signal；diFor pending signal；ni' it is to export the assessment signal disturbed, ni' by
Noise reference signal n0It is obtained after adaptive-filtering；diBy original signal siWith noise signal niTwo parts form and two groups
It is uncorrelated into part；
(1-1) formula both sides square are obtained：
ei 2=(di-ni')2=si 2+(ni-ni')2+2×si(ni-ni') (1-2)
(1-2) formula both sides take expectation to obtain:
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Make E [(ni-ni')2] value minimum, obtain the best estimate of actual signal.
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| CN108937958A (en) * | 2018-07-19 | 2018-12-07 | 刘肖俊 | A kind of high stable degree finger cot type blood oxygen probe suitable for using for a long time |
| CN110251094A (en) * | 2019-05-14 | 2019-09-20 | 周常安 | Finger-worn type physiology detection apparatus |
| WO2020099503A1 (en) * | 2018-11-13 | 2020-05-22 | Marc Zinner | Monitoring device, sensor device, and system and method for monitoring a person |
| WO2021032297A1 (en) * | 2019-08-21 | 2021-02-25 | Cuore Technology Hamburg Gmbh | Ring which can be worn on the finger of a person |
| CN114259111A (en) * | 2021-11-29 | 2022-04-01 | 歌尔股份有限公司 | Intelligent finger ring and manufacturing method of finger ring shell thereof |
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| WO2021032297A1 (en) * | 2019-08-21 | 2021-02-25 | Cuore Technology Hamburg Gmbh | Ring which can be worn on the finger of a person |
| CN114259111A (en) * | 2021-11-29 | 2022-04-01 | 歌尔股份有限公司 | Intelligent finger ring and manufacturing method of finger ring shell thereof |
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