CN106510659A - Blood oxygen and heart rate measuring method, measuring device and measuring system - Google Patents
Blood oxygen and heart rate measuring method, measuring device and measuring system Download PDFInfo
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- CN106510659A CN106510659A CN201610957964.4A CN201610957964A CN106510659A CN 106510659 A CN106510659 A CN 106510659A CN 201610957964 A CN201610957964 A CN 201610957964A CN 106510659 A CN106510659 A CN 106510659A
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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
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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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
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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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Abstract
The invention provides a blood oxygen and heart rate measuring method, a measuring device and a measuring system. According to the method, the device and the system, with the adoption of a reflected light measurement method, a light transmitter and a light receiver can be arranged at one side of fingers, so as to bring about benefits for diminishing the volume of the blood oxygen measuring device and to facilitate carrying and wearing of the blood oxygen measuring device. Meanwhile, by touching an induction chip, induction startup can be achieved, and a blood oxygen and heart rate measuring assembly can be automatically started as the induction chip is touched by the fingers. In addition, the method, by adopting a method for filtering ambient light and eliminating motion interference in a data processing process, can remove the influence of the ambient light on measurement, avoid measurement error caused by slight tremor or shaking of the fingers and improve the accuracy of the blood oxygen and heart rate measurement.
Description
Technical field
The present invention relates to human body blood oxygen heart rate measurement technical field, in particular to a kind of blood oxygen method for measuring heart rate,
Measurement apparatus and measuring system.
Background technology
Hemoglobin (Hb) is the important component part of hemocyte, and it is responsible for other by oxygen from pulmonary delivery to body
Tissue.Hemoglobin amount of oxygen contained at any one time is referred to as oxygen saturation.As a percentage, it is blood to oxygen saturation
The ratio of the oxygen content of Lactoferrin and hemoglobin oxygen carrying capacity.Blood oxygen saturation (abbreviation blood oxygen) be reflection human body respiration function and
The whether normal important physiological parameter of oxygen content, it is to show that our human bodies respectively organize whether an important physiology of health is joined
Number, oxygen content are low, and health declines naturally, and the generation of the tragedies such as asphyxia, shock, death can be also directly led in severe depletion of oxygen.
By the measurement of blood oxygen saturation, the oxygen content of patient can be understood in time, with epochmaking clinical value.
BOLD contrast is method of the monitoring there is provided blood oxygen saturation or arterin saturation is measured non-invasively,
Mainly there is two kinds of finger tip contacts formula, an earlobe contacts formula, consider for the accuracy to detecting, the content of blood oxygen, saturation
Measurement is most in finger measurement, typically using Fingerstall type oximeter.
Existing BOLD contrast and blood oxygen measuring device commonly use the method for transmission light measurements to determine blood oxygen saturation, light
Transmitter module transmitting light beam is irradiated on finger, and to Optical Receivers after light transmission, different blood oxygen saturations can cause light
The photo-signal intensity that receiver module is produced is different, can detect the blood oxygen saturation in blood of human body accordingly.So,
Light emission module and Optical Receivers are located at the both sides of finger, and upper and lower two housings of blood oxygen measuring device, profile are relatively cumbersome, no
It is easy to carry and wears.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of blood oxygen method for measuring heart rate, measurement apparatus and survey
Amount system, measures blood oxygen and heart rate using reflected light measurement method, is conducive to reducing the volume of blood oxygen measuring device so as to be easy to
Carry and wear.
In a first aspect, a kind of blood oxygen method for measuring heart rate is embodiments provided, including：
After touch sensible chip receives the finger touch signal that touch sensible electrode sends, blood oxygen heart rate measurement is opened
Component；
Light electric drive circuit drives optical transmitting set to send pre- according to the lighting timings of setting under logic control element effect
The light of standing wave length；The light of the predetermined wavelength includes the infrared light of the HONGGUANG that wavelength is 660nm and wavelength for 940nm；
Optical receiver gathers the light Jing after human body reflection that the optical transmitting set sends, and the light is connect by photoelectric switching circuit
The light that receipts device is received is converted to the signal of telecommunication；
Filter amplification circuit carries out signal processing to the signal of telecommunication, and the signal processing includes carrying out the signal of telecommunication
Filtering Processing and processing and amplifying；
The signal of telecommunication after signal processing is converted to digital signal by analog to digital conversion circuit；
Data processing unit is analyzed and is calculated to the digital signal, obtains heart rate value and blood oxygen saturation；
The data processing unit is analyzed to digital signal and calculates, including：
The crest and trough of the digital signal is obtained, is obtained between two adjacent peaks or between two adjacent troughs
Time interval, is calculated heart rate value；
Red signal light and infrared signal is isolated from the digital signal, and red signal light is normalized,
HONGGUANG average is asked for, infrared signal is normalized, ask for infrared light average；Ask for HONGGUANG average equal with infrared light
The ratio of value, obtains blood oxygen saturation.
With reference in a first aspect, embodiments provide the first possible embodiment of first aspect, wherein：Institute
State and red signal light is normalized, ask for HONGGUANG average, including：
HONGGUANG AC compounent and HONGGUANG DC component is obtained from the red signal light；
The ratio of HONGGUANG AC compounent and HONGGUANG DC component is calculated, as HONGGUANG homogenization value；
The meansigma methodss of the HONGGUANG homogenization value are asked for, HONGGUANG average is obtained.
With reference in a first aspect, embodiments provide second possible embodiment of first aspect, wherein：Institute
State and infrared signal is normalized, ask for infrared light average, including：
Infrared light AC compounent and infrared light DC component is obtained from the infrared signal；
The ratio of infrared light AC compounent and infrared light DC component is calculated, as infrared light homogenization value；
The meansigma methodss of the infrared light homogenization value are asked for, infrared light average is obtained.
With reference in a first aspect, embodiments provide the third possible embodiment of first aspect, wherein：Institute
State data processing unit to be analyzed digital signal and calculate, also include：
Differential process are carried out to the digital signal,
Process is integrated to the digital signal after differential process.
With reference in a first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein：Institute
State and isolate red signal light and infrared signal from digital signal, including：
The digital signal is sampled, isolate optical transmitting set transmitting HONGGUANG when containing red signal light, optical transmitting set
Ambient light signal when not lighting containing infrared signal and optical transmitting set during transmitting infrared light；
The ambient light signal is deducted with described containing red signal light, obtain red signal light；
The ambient light signal is deducted with described containing infrared signal, obtain infrared signal.
Second aspect, embodiments provides a kind of blood oxygen heart rate measurement device, including：Touch sensible electrode, with
The touch sensible chip and blood oxygen heart rate measurement component of touch sensible electrode connection；The touch sensible chip is used for receiving described
The finger touch signal that touch sensible electrode sends, and start the blood oxygen heart rate measurement component start-up operation；
The blood oxygen heart rate measurement component includes：Logic control element, light electric drive circuit, photoelectric sensor, photoelectricity turn
Change circuit, filter amplification circuit, analog to digital conversion circuit and data processing unit；
The photoelectric sensor includes optical transmitting set and optical receiver；The optical transmitting set is connected with the smooth electric drive circuit
Connect, the smooth electric drive circuit drives optical transmitting set to send out according to the lighting timings of setting under logic control element effect
Go out the light of predetermined wavelength；The optical transmitting set launches the light of two kinds of wavelength, including the HONGGUANG and wavelength that wavelength is 660nm is
The infrared light of 940nm；The optical receiver is used for gathering the light Jing after human body reflection that the optical transmitting set sends；
The optical receiver, photoelectric switching circuit, filter amplification circuit, analog to digital conversion circuit and data processing unit are sequentially
Connection, it is described that the light that optical receiver described in photoelectric switching circuit is received is converted to into the signal of telecommunication；The filter amplification circuit pair
The signal of telecommunication carries out signal processing, and the signal processing includes being filtered the signal of telecommunication process and processing and amplifying；Institute
State analog to digital conversion circuit and the signal of telecommunication after signal processing is converted to into digital signal；The data processing unit is to the numeral
Signal is analyzed and calculates, and obtains heart rate value and blood oxygen saturation；
The data processing unit includes：
Rate calculation unit, for obtaining the crest and trough of the digital signal, obtain between two adjacent peaks or
Time interval between two adjacent troughs, is calculated heart rate value；
Blood oxygen saturation calculates unit, for isolating red signal light and infrared signal from the digital signal, right
Red signal light is normalized, and asks for HONGGUANG average, infrared signal is normalized, ask for infrared light equal
Value；The ratio of HONGGUANG average and infrared light average is asked for, blood oxygen saturation is obtained.
With reference to second aspect, the first possible embodiment of second aspect is embodiments provided, wherein：Institute
Data storage cell and display unit that blood oxygen heart rate measurement component also includes being connected with the data processing unit is stated, it is described aobvious
Show that unit is connected with display screen, for showing the calculated heart rate value of the data processing unit and the blood oxygen saturation
Degree；The data storage cell is used for storing the calculated heart rate value of the data processing unit and the blood oxygen saturation
Degree.
With reference to second aspect, second possible embodiment of second aspect is embodiments provided, wherein：Institute
Stating device also includes data transmission unit, and the data transmission unit is connected with the data processing unit, including being wirelessly transferred
Unit and/or wire transmission unit, for the data processing unit calculated heart rate value and the blood oxygen are satisfied
Monitoring main frame is transferred to degree.
The third aspect, embodiments provides a kind of blood oxygen heart rate measurement system, and the system includes second aspect
The blood oxygen heart rate measurement device of second possible embodiment offer and monitoring main frame.
With reference to the third aspect, the first possible embodiment of the third aspect is embodiments provided, wherein：Institute
It is hand-held mobile terminal or special custodial care facility to state monitoring main frame.
Blood oxygen method for measuring heart rate provided in an embodiment of the present invention, measurement apparatus and measuring system, using reflected light measurement
Method, so, optical transmitting set and optical receiver can be arranged on the side of finger, be conducive to reducing the body of blood oxygen measuring device
Product so as to be easy to carry and wear.Meanwhile, touch sensible chip can realize sensing start, after finger is touched, automatically turn on blood
Oxygen heart rate measurement component.
For enabling the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
The flow chart that Fig. 1 shows a kind of blood oxygen method for measuring heart rate that one embodiment of the invention is provided；
Fig. 2 shows a kind of structured flowchart of blood oxygen heart rate measurement device that one embodiment of the invention is provided；
Fig. 3 shows a kind of circuit connecting relation figure of blood oxygen heart rate measurement component that one embodiment of the invention is provided；
Fig. 4 shows a kind of circuit connecting relation of blood oxygen heart rate measurement component that another embodiment of the present invention is provided
Figure；
Fig. 5 shows a kind of circuit connecting relation of blood oxygen heart rate measurement internal system that one embodiment of the invention is provided
Figure.
Specific embodiment
For making purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
It is a part of embodiment of the invention, rather than the embodiment of whole.The present invention generally described and illustrated in accompanying drawing herein is real
The component for applying example can be arranged and be designed with a variety of configurations.Therefore, below to the present invention's that provides in the accompanying drawings
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, the institute obtained on the premise of creative work is not made by those skilled in the art
There is other embodiment, belong to the scope of protection of the invention.
At present, blood oxygen measuring device commonly uses transmitted light technology to determine blood oxygen saturation, light emission module transmitting one
Beam light irradiation on finger, to Optical Receivers after light transmission, according to the optical signal that the intensity that Optical Receivers is received differs,
The blood oxygen saturation in blood of human body can be detected.But, such structure, light emission module and Optical Receivers are located at handss
The both sides of finger, BOLD contrast need upper and lower two housings, and profile is relatively cumbersome, is not easy to wear.
For this purpose, embodiments providing the blood oxygen heart rate measurement side of a kind of utilization reflected light measurement blood oxygen and heart rate
Method.The flow chart that Fig. 1 shows blood oxygen method for measuring heart rate provided in an embodiment of the present invention, from figure 1 it appears that this
The blood oxygen method for measuring heart rate that bright embodiment is provided, including：
Step S101：After touch sensible chip receives the finger touch signal that touch sensible electrode sends, blood is opened
Oxygen heart rate measurement component；
Step S102：Light electric drive circuit drives optical transmitting set according to the luminous of setting under logic control element effect
Sequential sends the light of predetermined wavelength；The light of the predetermined wavelength includes the HONGGUANG that wavelength is 660nm and wavelength for the infrared of 940nm
Light；
Step S103：Optical receiver gathers the light Jing after human body reflection that the optical transmitting set sends, photoelectric switching circuit
The light that the optical receiver is received is converted to into the signal of telecommunication；
Step S104：Filter amplification circuit carries out signal processing to the signal of telecommunication, and the signal processing is included to described
The signal of telecommunication is filtered process and processing and amplifying；The filter amplification circuit adopts band elimination filter, can filter 50Hz and
The Hz noise of 60Hz；
Step S105：The signal of telecommunication after signal processing is converted to digital signal by analog to digital conversion circuit；
Step S106：Data processing unit is analyzed and is calculated to the digital signal, obtains heart rate value and blood oxygen is full
And degree.
In step S106, data processing unit is analyzed to digital signal and calculates, including：
The crest and trough of the digital signal is obtained, is obtained between two adjacent peaks or between two adjacent troughs
Time interval, is calculated heart rate value；
Red signal light and infrared signal is isolated from the digital signal, and red signal light is normalized,
HONGGUANG average is asked for, infrared signal is normalized, ask for infrared light average；Ask for HONGGUANG average equal with infrared light
The ratio of value, obtains blood oxygen saturation.
Wherein：Red signal light is normalized, HONGGUANG average is asked for, including：
HONGGUANG AC compounent and HONGGUANG DC component is obtained from the red signal light；
The ratio of HONGGUANG AC compounent and HONGGUANG DC component is calculated, as HONGGUANG homogenization value；
The meansigma methodss of the HONGGUANG homogenization value are asked for, HONGGUANG average is obtained.
Infrared signal is normalized, infrared light average is asked for, including：
Infrared light AC compounent and infrared light DC component is obtained from the infrared signal；
The ratio of infrared light AC compounent and infrared light DC component is calculated, as infrared light homogenization value；
The meansigma methodss of the infrared light homogenization value are asked for, infrared light average is obtained.
Even if inventor considers that the finger of people can also have faint vibration or shake in the state of static, these
Vibration or shake may result in pulse wave crest, trough searching it is possible that error, the AC and DC for obtaining
Ratio is also likely to be mistake, and so, the measurement result of blood oxygen and pulse frequency is it is difficult to ensure that accurately.Meanwhile, shake is likely to can band
Carry out step noise.Therefore, blood oxygen method for measuring heart rate provided in an embodiment of the present invention, data processing unit are carried out to digital signal
In the step for analysis and calculating, also include：Before heart rate value is calculated, differential process are carried out to the digital signal first, then
Process is integrated to the digital signal after differential process.In wave spectrum space, motion noise is a constant to digital signal, often
Several differentiation results is zero, so, after differential process, motion noise is eliminated, then integrates reply pulse waveform, this
Method eliminates the interference of motion noise, can obtain good measurement effect.
Further, since the external world has ambient light, photoelectric sensor can also receive a certain amount of ambient light in measurement,
Therefore, before calculating, it should which the impact of ambient light is eliminated.For this purpose, the method provided by this method embodiment, above-mentioned from number
Isolate in word signal in red signal light and infrared signal step, also include：The digital signal is sampled, is isolated
Optical transmitting set transmitting HONGGUANG when containing red signal light, optical transmitting set transmitting infrared light when containing infrared signal and optical transmitting set
Ambient light signal when not lighting；The ambient light signal is deducted with described containing red signal light, obtain red signal light；Contained with described
Infrared signal deducts the ambient light signal, obtains infrared signal.
Corresponding with above-mentioned blood oxygen method for measuring heart rate, one embodiment of the invention additionally provides blood oxygen heart rate measurement device,
As shown in Fig. 2 the device includes：Touch sensible electrode 11, the touch sensible chip 12 being connected with touch sensible electrode 11 and blood
Oxygen heart rate measurement component 3.Touch sensible chip 11 is used for receiving the finger touch signal that touch sensible electrode 11 sends, and starts
Blood oxygen heart rate measurement component 3 is started working.
Fig. 3 shows the circuit connecting relation figure of the blood oxygen heart rate measurement component provided by one embodiment of the invention.Such as Fig. 3
Shown, the blood oxygen heart rate measurement component includes：Logic control element 36, light electric drive circuit 35, photoelectric sensor 30, photoelectricity turn
Change circuit 32, filter amplification circuit 33, analog to digital conversion circuit 34 and data processing unit 38.
Wherein, photoelectric sensor 30 includes optical transmitting set 301 and optical receiver 302.Optical transmitting set 301 and light electric drive electricity
Road 35 connects, light electric drive circuit 35 logic control element 36 effect under, drive optical transmitting set 301 according to setting it is luminous when
Sequence sends the light of predetermined wavelength；Optical transmitting set 301 launches the light of two kinds of wavelength, including the HONGGUANG and wavelength that wavelength is 660nm is
The infrared light of 940nm；Optical receiver 302 is used for gathering the light Jing after human body reflection that optical transmitting set 301 sends.
Optical receiver 302, photoelectric switching circuit 32, filter amplification circuit 33, analog to digital conversion circuit 34 and data processing list
Unit 38 is sequentially connected with, and the light that optical receiver 302 is received is converted to the signal of telecommunication by photoelectric switching circuit 32；Filter amplification circuit 33
Signal processing is carried out to the signal of telecommunication, and the signal processing includes being filtered the signal of telecommunication process and processing and amplifying.Analog digital conversion
The signal of telecommunication after signal processing is converted to digital signal by circuit 34；Data processing unit 38 digital signal is analyzed and
Calculate, obtain heart rate value and blood oxygen saturation.
The data processing unit includes that rate calculation unit and blood oxygen saturation calculate unit.Rate calculation unit, uses
In the crest and trough that obtain the digital signal, obtain between the time between two adjacent peaks or between two adjacent troughs
Every being calculated heart rate value.Blood oxygen saturation calculates unit, for isolating red signal light and infrared from the digital signal
Optical signal, is normalized to red signal light, asks for HONGGUANG average, infrared signal is normalized, ask for
Infrared light average；The ratio of HONGGUANG average and infrared light average is asked for, blood oxygen saturation is obtained.
Further, blood oxygen heart rate measurement component also include the data storage cell 37 being connected with data processing unit 38 and
Display unit 31, display unit 31 are connected with display screen, for showing 38 calculated heart rate value of the data processing unit
And blood oxygen saturation.Data storage cell 37 is used for 38 calculated heart rate value of data storage processing unit and blood oxygen saturation
Degree.
Fig. 4 shows the circuit connecting relation figure of the blood oxygen heart rate measurement component provided by another embodiment of the present invention.Such as
Shown in Fig. 4, the blood oxygen heart rate measurement component includes：Logic control element 36, light electric drive circuit 35, photoelectric sensor 30, light
Power conversion circuit 32, filter amplification circuit 33, analog to digital conversion circuit 34, data processing unit 38 and data transmission unit 39.
Wherein, photoelectric sensor 30 includes optical transmitting set 301 and optical receiver 302.Optical transmitting set 301 and light electric drive electricity
Road 35 connects, light electric drive circuit 35 logic control element 36 effect under, drive optical transmitting set 301 according to setting it is luminous when
Sequence sends the light of predetermined wavelength；Optical transmitting set 301 launches the light of two kinds of wavelength, including the HONGGUANG and wavelength that wavelength is 660nm is
The infrared light of 940nm；Optical receiver 302 is used for gathering the light Jing after human body reflection that optical transmitting set 301 sends.
Optical receiver 302, photoelectric switching circuit 32, filter amplification circuit 33, analog to digital conversion circuit 34 and data processing list
Unit 38 is sequentially connected with, and the light that optical receiver 302 is received is converted to the signal of telecommunication by photoelectric switching circuit 32；Filter amplification circuit 33
Signal processing is carried out to the signal of telecommunication, and the signal processing includes being filtered the signal of telecommunication process and processing and amplifying.Analog digital conversion
The signal of telecommunication after signal processing is converted to digital signal by circuit 34；Data processing unit 38 digital signal is analyzed and
Calculate, obtain heart rate value and blood oxygen saturation.Data transmission unit is connected with the data processing unit, including being wirelessly transferred list
Unit and/or wire transmission unit.Data transmission circuit 39 is for by 38 calculated heart rate value of data processing unit and blood oxygen
Saturation is transferred to monitoring main frame.
Above-described embodiment is while including data transmission unit, it is also possible to including the data described in a upper embodiment
Memory element and display unit.After measurement result is stored and shown, while can be transferred on monitoring main frame.
In the embodiment of above-mentioned two blood oxygen heart rate measurement device, blood oxygen heart rate measurement device may refer to ring type or card
Formula device, optical transmitting set and optical receiver are located at the same side of finger, such that it is able to effectively reduce the volume of device, convenient to wear
Wear.
With it is above-mentioned including data transmission unit embodiment accordingly, the embodiment of the present invention additionally provides a kind of blood oxygen heart rate
Measuring system, its circuit connecting relation and touch sense as shown in figure 5, the system includes touch sensible electrode 11 as shown in Figure 2
Answer blood oxygen heart rate measurement device and the monitoring master of the touch sensible chip 12 and the composition of blood oxygen heart rate measurement component 3 of the connection of electrode 11
Machine 5.
Touch sensible chip 11 is used for receiving the finger touch signal that touch sensible electrode 11 sends, and starts blood oxygen heart rate
Measurement assembly 3 is started working.
Blood oxygen heart rate measurement component includes：Logic control element 36, light electric drive circuit 35, photoelectric sensor 30, photoelectricity
Change-over circuit 32, filter amplification circuit 33, analog to digital conversion circuit 34, data processing unit 38 and data transmission unit 39.
The monitoring main frame 5 is hand-held mobile terminal or special custodial care facility.Data in blood oxygen heart rate measurement device are passed
Defeated unit 501 is connected with monitoring main frame 60 by way of wirelessly or non-wirelessly connecting.The mode of wireless connection include bluetooth connection,
The modes such as infrared connection, Wifi connections or less radio-frequency connection.Wired connection is data transmission unit using data wire and monitoring
Main frame connects.
In embodiment provided by the present invention, it should be understood that disclosed blood oxygen heart rate measurement device and the blood oxygen heart
Rate measuring system, can be realized by another way.Device embodiment described above is only schematic, for example,
The division of the unit, only a kind of division of logic function can have an other dividing mode when actually realizing, and for example,
Multiple units or component can with reference to or be desirably integrated into another system, or some features can be ignored, or not perform.Institute
State that the unit as separating component explanation can be or may not be physically separate, the part shown as unit can
To be or may not be physical location, you can local to be located at one, or can also be distributed on multiple NEs.
Some or all of unit therein can be selected according to the actual needs to realize the purpose of this embodiment scheme.
In addition, each functional unit in the embodiment that the present invention is provided can be integrated in a processing unit, also may be used
Being that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.
If the function is realized using in the form of SFU software functional unit and as independent production marketing or when using, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention.
And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying
Relative importance.
Finally it should be noted that：Embodiment described above, specific embodiment only of the invention, to illustrate the present invention
Technical scheme, rather than a limitation, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this
It is bright to be described in detail, it will be understood by those within the art that：Any those familiar with the art
The invention discloses technical scope in, which still can be modified to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of blood oxygen method for measuring heart rate, it is characterised in that include：
After touch sensible chip receives the finger touch signal that touch sensible electrode sends, blood oxygen heart rate measurement group is opened
Part；
Light electric drive circuit drives optical transmitting set to send pre- standing wave according to the lighting timings of setting under logic control element effect
Long light；The light of the predetermined wavelength includes the infrared light of the HONGGUANG that wavelength is 660nm and wavelength for 940nm；
Optical receiver gathers the light Jing after human body reflection that the optical transmitting set sends, and photoelectric switching circuit is by the optical receiver
The light for receiving is converted to the signal of telecommunication；
Filter amplification circuit carries out signal processing to the signal of telecommunication, and the signal processing includes being filtered the signal of telecommunication
Process and processing and amplifying；
The signal of telecommunication after signal processing is converted to digital signal by analog to digital conversion circuit；
Data processing unit is analyzed and is calculated to the digital signal, obtains heart rate value and blood oxygen saturation；
The data processing unit is analyzed to digital signal and calculates, including：
The crest and trough of the digital signal is obtained, the time between two adjacent peaks or between two adjacent troughs is obtained
Interval, is calculated heart rate value；
Red signal light and infrared signal is isolated from the digital signal, red signal light is normalized, ask for
HONGGUANG average, is normalized to infrared signal, asks for infrared light average；HONGGUANG average is asked for infrared light average
Ratio, obtains blood oxygen saturation.
2. blood oxygen method for measuring heart rate according to claim 1, it is characterised in that described that red signal light is normalized
Process, ask for HONGGUANG average, including：
HONGGUANG AC compounent and HONGGUANG DC component is obtained from the red signal light；
The ratio of HONGGUANG AC compounent and HONGGUANG DC component is calculated, as HONGGUANG homogenization value；
The meansigma methodss of the HONGGUANG homogenization value are asked for, HONGGUANG average is obtained.
3. blood oxygen method for measuring heart rate according to claim 1, it is characterised in that described that normalizing is carried out to infrared signal
Change is processed, and asks for infrared light average, including：
Infrared light AC compounent and infrared light DC component is obtained from the infrared signal；
The ratio of infrared light AC compounent and infrared light DC component is calculated, as infrared light homogenization value；
The meansigma methodss of the infrared light homogenization value are asked for, infrared light average is obtained.
4. blood oxygen method for measuring heart rate according to claim 1, it is characterised in that：The data processing unit is to numeral letter
Number it is analyzed and calculates, also includes：
Differential process are carried out to the digital signal,
Process is integrated to the digital signal after differential process.
5. blood oxygen method for measuring heart rate according to claim 1, it is characterised in that：Isolate from the digital signal red
Optical signal and infrared signal, including：
The digital signal is sampled, launching containing red signal light, optical transmitting set when isolating optical transmitting set transmitting HONGGUANG
Ambient light signal when not lighting containing infrared signal and optical transmitting set during infrared light；
The ambient light signal is deducted with described containing red signal light, obtain red signal light；
The ambient light signal is deducted with described containing infrared signal, obtain infrared signal.
6. a kind of blood oxygen heart rate measurement device, it is characterised in that include：Touch sensible electrode, is connected with touch sensible electrode
Touch sensible chip and blood oxygen heart rate measurement component；The touch sensible chip is used for receiving what the touch sensible electrode sent
Finger touch signal, and start the blood oxygen heart rate measurement component start-up operation；
The blood oxygen heart rate measurement component includes：Logic control element, light electric drive circuit, photoelectric sensor, opto-electronic conversion electricity
Road, filter amplification circuit, analog to digital conversion circuit and data processing unit；
The photoelectric sensor includes optical transmitting set and optical receiver；The optical transmitting set is connected with the smooth electric drive circuit,
The smooth electric drive circuit drives optical transmitting set to send pre- according to the lighting timings of setting under logic control element effect
The light of standing wave length；The optical transmitting set launches the light of two kinds of wavelength, including the HONGGUANG and wavelength that wavelength is 660nm for 940nm's
Infrared light；The optical receiver is used for gathering the light Jing after human body reflection that the optical transmitting set sends；
The optical receiver, photoelectric switching circuit, filter amplification circuit, analog to digital conversion circuit and data processing unit sequentially connect
Connect, the light that the optical receiver is received is converted to the signal of telecommunication by the photoelectric switching circuit；The filter amplification circuit is to institute
Stating the signal of telecommunication carries out signal processing, and the signal processing includes being filtered the signal of telecommunication process and processing and amplifying；It is described
The signal of telecommunication after signal processing is converted to digital signal by analog to digital conversion circuit；The data processing unit is to the numeral letter
Number it is analyzed and calculates, obtains heart rate value and blood oxygen saturation；
The data processing unit includes：
Rate calculation unit, for obtaining the crest and trough of the digital signal, obtains between two adjacent peaks or two
Time interval between adjacent trough, is calculated heart rate value；
Blood oxygen saturation calculates unit, for isolating red signal light and infrared signal from the digital signal, to HONGGUANG
Signal is normalized, and asks for HONGGUANG average, infrared signal is normalized, and asks for infrared light average；Ask
The ratio of HONGGUANG average and infrared light average is taken, blood oxygen saturation is obtained.
7. blood oxygen heart rate measurement device according to claim 6, it is characterised in that：The blood oxygen heart rate measurement component is also wrapped
The data storage cell and display unit being connected with the data processing unit is included, the display unit is connected with display screen, used
In the display calculated heart rate value of data processing unit and the blood oxygen saturation；The data storage cell is used
In the storage calculated heart rate value of data processing unit and the blood oxygen saturation.
8. blood oxygen heart rate measurement device according to claim 6, it is characterised in that：Described device also includes data transfer list
Unit, the data transmission unit are connected with the data processing unit, including wireless transmission unit and/or wire transmission unit,
For the data processing unit calculated heart rate value and the blood oxygen saturation are transferred to monitoring main frame.
9. a kind of blood oxygen heart rate measurement system, it is characterised in that：The system includes the blood oxygen heart rate measurement dress described in claim 8
Put and guard main frame.
10. blood oxygen heart rate measurement system according to claim 9, it is characterised in that：The monitoring main frame is hand-held movement
Terminal or special custodial care facility.
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| CN115177245A (en) * | 2021-04-02 | 2022-10-14 | 深圳市理邦精密仪器股份有限公司 | Blood oxygen detection method, fetal heart monitoring equipment and computer readable storage medium |
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