CN2824836Y - Head-mounted physiological parameter measuring device - Google Patents
Head-mounted physiological parameter measuring device Download PDFInfo
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- CN2824836Y CN2824836Y CN 200520001171 CN200520001171U CN2824836Y CN 2824836 Y CN2824836 Y CN 2824836Y CN 200520001171 CN200520001171 CN 200520001171 CN 200520001171 U CN200520001171 U CN 200520001171U CN 2824836 Y CN2824836 Y CN 2824836Y
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Abstract
The utility model relates to a head mounted physiological parameter measuring device, particularly a head mounted device used for realizing the measurement of a plurality of physiological parameters. The utility model comprises a head mounted device, at least one sensor, a processing unit, a receiving unit and a notifying unit, wherein the head mounted device is fixed to the ears or the head of a person who wears the head mounted device; the sensor (s) is (are) positioned at a proper position of the head mounted device, so that when the head mounted device is used, the sensor (s) is (are) close to the pinnas or the external auditory meatus of the person who wears the head mounted device to sense physiological signals and convert the physiological signals into electrical signals; the processing unit receives the electrical signals from the sensor (s) and calculates a plurality of physiological parameters according to the electrical signals; the receiving unit receives data inputted by the person who wears the head mounted device to assist the processing unit in calculating the physiological parameters; the notifying unit notifies the person who wears the head mounted device the measured physiological parameters in a displaying mode or in a voice prompt mode. The utility model realizes the measurement of a plurality of key physiological parameters, detected physiological parameters can be transmitted to the notifying unit in a wireless transmission mode and measuring switches can be controlled by biological signals.
Description
Technical field
This utility model relates to a kind of physiological parameter measurement instrument, relates in particular to use the nondestructive measurement that the wear-type device is realized a plurality of physiological parameters, and the physiological parameter of its calculating comprises blood pressure, blood pressure rate, heart rate, changes in heart rate rate, blood oxygen saturation etc.
Background technology
Existing numerous physiological parameter measurement instrument is used to measure body weight, fat content, body temperature, blood glucose and blood oxygen saturation etc. on the market.
Characterizing the active physiological parameter of cardiovascular system is a most important class in the physiological activity monitoring.First the monitoring that characterizes the active physiological parameter of cardiovascular system was realized in 20 beginnings of the century.Development through last 100 years, present normally monitors the relevant parameter of arteriotony to characterizing the active physiological parameter monitoring system of cardiovascular system, comprise systolic blood pressure, diastolic blood pressure, mean blood pressure, pulse pressure reduction (pressure differential of systolic pressure and diastolic pressure) and heart rate, also have frequency of pulse and pulse rhythm.The medical worker can be known patient's physiological situation by these important informations.
At present existing the whole bag of tricks can obtain the relevant parameter of arteriotony.Automated blood pressure device mainly adopts auscultation and succusion.Auscultation and succusion all need to utilize cuff temporary interruption artery blood flow during measuring that can charge and discharge gas.Therefore, these methods can not be used for successive blood pressure measurement.And, use cuff that patient is not felt quite oneself during measuring.
People have developed different new techniques to realize possessing continuous measurement function and the comfortable blood pressure measuring method of process.Tonometry and pulse wave transmission speed method are two kinds of methods that overcome auscultation and succusion shortcoming.
Tonometry is equivalent to the inspection of arterial pressure waveform.Skeleton part flattens and when remaining on this state, periphery pressure almost is directly proportional with arteriotony because of periphery pressure is pressed towards when the body surface tremulous pulse.Therefore, the periphery pressure waveform can be considered to the arterial pressure waveform and can calibrate by reference method (normally succusion), relevant technology can be at document Ng K-G, Small CF, " Survey ofautomated noninvasive blood pressure monitors, " J.Clin.Engin.1994; Consult among the 19:452-475.United States Patent (USP) 6,443,906 have described a kind of blood pressure measurement device that adopts tonometry.Though adopt tonometry can realize the continuous blood pressure measurement, its serious problems are to be difficult to accurately locate tonometer on tremulous pulse.
Pulse wave velocity (PWV) measurement method is based on pressure pulse wave and determines blood pressure along the propagation rate information of tremulous pulse.It is used to obtain corresponding arteriotony and calibrates the estimated blood pressure value by reference method (normally succusion).Similarly, relevant technology is at Ng K-G, Small CF, " Survey of automated noninvasive blood pressure monitors, " J.Clin.Engin.1994; 19:452-475 also mentions.It is constant that the length that detects the position of PWV and blood vessel is assumed to be respectively, and this technology develops into according to the pulse wave propagate time (PTT) again and comes estimated blood pressure.PTT is meant that pulse wave is transferred to another required time of point from more eparterial, and PTT is confirmed as the pulse wave from the heart contraction to the correspondence in the same cardiac cycle and is sent to interval between the external perihaemal canal usually.
Record external perihaemal canal pulse wave is considerable technology to the measurement of a lot of harmless formula blood pressures and blood oxygen saturation.Photoplethaysmography figure (PPG) utilizes optical principle to detect the external perihaemal canal pulse wave, comprises at least one light emitting diode and at least one photoelectric sensor.Usually, light emitting diode is launched light to tissue, and these light are through tissue reflection, transmission or scattering.Part light can be received by photoelectric sensor.If photoelectric sensor receives reflected light, it and light emitting diode can be placed on same side; If photoelectric sensor receives transillumination, it and light emitting diode can be placed on relative direction.PTT or PWV can utilize photoplethaysmography figure along a plurality of different position probing of blood vessel, and the feature of photoplethaysmography figure can detect at each cardiac cycle.The method that adopts PTT or PWV to carry out blood pressure and oxygen saturation measurement occurs in multinomial patent, comprises United States Patent (USP) 5,649, and 543,5,865,755 and 6,599,251 and European patent 0,443,267.
Estimate that for realizing easy physiological parameter many physiological parameter measuring device are embedded in the personal belongings.Owing to its non-intervention type, need not cuff, adopt the PTT estimating physiological parameters to become the most frequently used method of these equipment.For example a kind of blood pressure measuring system of providing of Japan Patent 2002-172094 comprises a cuff formula blood pressure measurement device and an accutron type sphygomanometer that adopts pulse wave transmission speed method.The key feature of this invention is can be transferred to accutron type sphygomanometer automatically by the data that cuff formula blood pressure measurement device records it is calibrated, and user does not need manual input calibration data like this.In case after the calibration, the pulse transmission time of accutron type sphygomanometer with regard to obtaining according to the interval between from the electrocardiosignal to the pulse wave signal, and then estimate the pressure value of user.But this also is not a real hands-free sphygmomanometer.During measuring, the finger of user need contact with accutron; This mode of operation can influence daily routines.
In order to develop non-intervention type, no cuff, real hands-free physiological parameter measurement mechanism, a kind of feasible solution is that exploitation is worn on the user head or the physiological parameter measurement mechanism on the ear.This class device can be earphone, receiver, ear clip, headband and the helmet etc.British patent 2,165,352 a kind of heart rate measurement equipment of describing comprise ear clip with heart rate measurement pick off and the peripheral exercise equipment that possesses data-handling capacity.The heart rate measurement pick off is positioned over the ear-lobe rear of user, and its detected optical signal transmissive is converted into the signal of telecommunication as heart rate measurement.European patent 1,330,981 have provided another kind of method for measuring heart rate, and it need possess the cooperation between the two of the headband of earpiece transducer and bicycle type exercise equipment.During motion, the user just can detect pulse rates with the headband that is mounted with earpiece transducer.Detected pulse rates can be transmitted wirelessly on the bicycle exerciser, calculates then and display result.
Need ancillary equipment to show that measurement data is different with above-mentioned patent, some patents have proposed to realize sound announcement or warning function in a heart rate detection equipment.Patent WO 9,714, and 357 have provided a kind of measurement and heart rate measurement instrument of reporting the result realized in receiver.After detection and processing signals, equipment can produce audio-frequency information and it is passed to user.United States Patent (USP) 3,815,583 have provided a kind of heart rate monitoring system, and it uses the pick off that is positioned on the ear to realize successive rhythm of the heart.When being lower than or exceeding preset range, detected signal has warning prompt.
Except that rhythm of the heart, people have also developed wear-type or the Wearable equipment that is used to detect other physiological parameter.United States Patent (USP) 2002-0148470 has described a kind of earphone of measuring blood oxygen saturation, and it can control oxygen supply in the open loop respiratory system.
United States Patent (USP) 6,004,274 have described a kind of earphone device that the pulse wave propagate time carries out blood pressure measurement that utilizes.It need stop up the external auditory meatus of user, and the signal that change to produce according to the external auditory meatus internal gas pressure carries out blood pressure measurement, shows simultaneously or/and writes down this signal.Though this equipment can be realized real hands-free blood pressure measurement, when measuring, receiver need be stopped up the external auditory meatus of user, this can cause discomfort.In addition, stop up the reception that external auditory meatus also can influence audio signal.These factors have all reduced the practicality of this equipment.
Above-mentioned patent is all only mentioned relevant patent as measuring a certain physiological parameter, and another related invention of describing at European patent 0923903 adopts the signal that obtains from one or more pairs of light emitting diodes and photoelectric sensor to detect heart rate and blood oxygen saturation.Its pick off is embedded in the receiver that contacts with external auditory canal opening (being tragus, helix, the part between the outer auricle).Because pick off only is positioned over the external auditory canal opening of a position-ear, and that the auditory meatus mouth can hold the number of light emitting diode and photoelectric sensor is limited, so this invention is limited to the design of measurement device and the number that detects photoplethaysmography figure simultaneously.Add that under general case with the loose user external auditory canal opening that hangs over, the signal of reception is subjected to the motion influence of noise to receiver widely only, therefore, this invention also is not suitable for user and uses under astatic state, as walking motion etc.
Summary of the invention
The technical problems to be solved in the utility model provides and has a kind ofly overcome above-mentioned difficulties and give the measuring method of user in motion or other astatic state computation multiple physiological parameter, comprise systolic blood pressure, diastolic blood pressure, mean blood pressure and pulse pressure reduction, and the pulse rates and the blood oxygen saturation that obtain by the characteristic point of plethysmogram extraction.The technical problem that this utility model further will solve provides and a kind ofly need not the instrument that the user manual operation can realize that multi-physiological-parameter is measured, thereby the daily routines of user can be interfered.
The utility model proposes a kind of wear-type multi-physiological-parameter gauge, comprising:
I. ear or the head of wear-type device to be fixed in the wearer;
Ii. at least one pick off is positioned at the appropriate location of described wear-type device, thereby described at least one pick off is close to wearer's auricle or external auditory meatus with the induction physiological signal and convert thereof into the signal of telecommunication when described instrument uses;
Iii. processing unit is to accept calculating a plurality of physiological parameters from the signal of telecommunication of described pick off and according to the described signal of telecommunication;
Iv. receiving element calculates described a plurality of physiological parameter with the data that receive wearer's input with the assist process unit; With
V. notification unit is announced the described a plurality of physiological parameters that record with demonstration or voice prompting mode to the wearer.
Wherein, described processing unit, receiving element and notification unit can be installed on described wear-type device, also can be installed on one and may be worn on the stand-alone assembly that the user is used for the stand-alone assembly of video data on one's body or is fixed on the somewhere, and communicate by letter with wireless mode with described wear-type device.
Wherein, described pick off is embedded in the wear-type device, or is attached in the sensor outer housing that links to each other with described wear-type device, and the top that can also be positioned over helix is subjected to the motion effect of noise to reduce physiological signal.
And described wear-type device can be medicated cap, headband, scarf, swimming cap or the earphone that is attached to electronic product.And can being clip, hook, receiver or other, the sensor shell can paste the entity of obeying on wearer's skin.
Sensor as aforementioned is placed on can paste the contacted entity of helix, tragus, external auditory meatus and/or auricle of obeying in the wearer, is used to detect capacity trace signal or the pressure pulse wave signal that characterizes the peripheral blood volume-variation.It comprises at least one light source and at least one photoelectric sensor.And this pick off can be that piezoelectricity, pressure are anti-, the transducer of ceramic.
This wear-type physiological parameter measurement instrument comprises that at least one accelerometer is to detect wearer's motion; Comprise that at least one photoelectric sensor is with ambient light.Its processing unit not only comprises and reduces the function that physiological signal is influenced by the periphery environmental light intensity, and comprise selection from described one or above pick off picked up signal feature to calculate the function of described physiological parameter.
Aforementioned physiological parameter comprises systolic blood pressure, diastolic blood pressure, mean blood pressure, pulse pressure reduction, blood pressure rate, heart rate, changes in heart rate rate, blood oxygen saturation and pulse interval, pulse wave transmission time and pulse wave transmission speed.And aforementioned bio signal can also can perhaps be controlled with language or sound by the user by the pressure signal that musculation obtained or the electromyographic signal control of face by near pressure signal that musculation obtained the eyes or electromyographic signal control.
Preferably, described multi-physiological-parameter monitoring equipment comprises that also the bio signal gauge tap is positioned at the ad-hoc location of a described wear-type device or a stand-alone assembly, with the particular organisms signal that sends of response user's body so that enabling signal to take place.
This utility model except can provide in real time, the multi-physiological-parameter measurement of no cuff and harmless formula, can also propose a kind ofly to realize real hands-freely and reduce the wear-type device survey meter of blood pressure of motion noise, measure no matter make user whenever can carry out multi-physiological-parameter voluntarily to the measurement result influence.
Description of drawings
Fig. 1 be this utility model headband receiver of possessing nondestructive measurement multi-physiological-parameter function sketch map and with its user interface of wearable assembly independently mutually;
But Fig. 2 A～Fig. 2 G is the sketch map of a plurality of placement locations of optical transmitting set and photoelectric sensor in this utility model;
Fig. 3 A～Fig. 3 E is the sketch map of adoptable earphone model;
Fig. 4 A, Fig. 4 B are the sketch maps of adoptable sensor outer housing;
Fig. 5 is the sketch map of several stand-alone assemblies;
Fig. 6 is the sketch map of photoplethaysmography figure circuit;
Fig. 7 is the sketch map of typical light Power Capacity graphy figure;
Fig. 8 describes the various features of this utility model from the alternating current extracting section of photoplethaysmography figure;
Fig. 9 is the pulse wave propagate time of describing from two photoplethaysmography figure seize;
Figure 10 A～Figure 10 D is as the pick off laying method sketch map that detects the bio signal that is used for on-off control;
Figure 11 describes the flow chart that two-way wireless communication multi-physiological-parameter of the present utility model is measured calibration process;
Figure 12 is a flow chart of describing two-way wireless communication multi-physiological-parameter measuring process of the present utility model.
The specific embodiment
Fig. 1 has illustrated essential structure of the present utility model.Be embedded in a pair of optical transmitting set in the wear-type device 103 (as earphone) and photoelectric sensor (101,102) and go out capacity trace signal from the ear epidermis or near the position probing of user.According to the characteristic point of extracting from capacity trace signal, the treatment circuit (104) by wear-type device 103 inside calculates one group of physiological parameter, for example blood pressure and heart rate etc.These physiological parameters are sent on the stand-alone assembly (106) of a demonstration physiological parameter (107) with wireless transmission method (105).In addition, stand-alone assembly 106 also comprises a miniature keyboard (108) that allows user input calibration information.Also reserve the space of settling power supply (109) in the wear-type device 103.
Earphone and stand-alone assembly can be unidirectional or two-way radio communication mode of operations.For example, when earphone and stand-alone assembly were two-way wireless communication, pick off and processing unit were embedded in the earphone obtaining physiological signal, detected characteristics point and measure various physiological parameters.User can be required to import data to the measurement of stand-alone assembly with the help physiological parameter.With the blood pressure measurement is example, and user will be imported the firm pressure value that records at another survey meter of blood pressure immediately to stand-alone assembly.Utilize the wireless data transmission receiving element in earphone and the stand-alone assembly, relevant data can be wirelessly communicated to earphone and be used as assists to measure various physiological parameters.In general, user only need be required to import data in the first time during operative installations.After this, earphone can obtain physiological signal from the pick off that embeds, and calculates through processing unit, measure a plurality of physiological parameters, and announce user at the phonation unit of earphone, or the notification unit that is sent in the stand-alone assembly shows.
Another example is the uni-directional wireless communication between earphone and the stand-alone assembly, and pick off and processing unit are embedded in the earphone to obtain physiological signal.Can be delivered to stand-alone assembly by the wireless data transmission receiving element from the detected characteristic point of physiological signal, first user can be required to import data to help the measurement of physiological parameter.The processing unit of stand-alone assembly calculates and the physiological parameter of measuring is presented at notification unit.
Fig. 2 A～Fig. 2 G has provided the diverse location combination that optical transmitting set and photoelectric sensor can be placed.Optical transmitting set and photoelectric sensor can be positioned over the auricle or the external auditory meatus of user.If be positioned on the auricle of user, when being operated in reflective-mode, emitter and pick off can be affixed on helix (201), the back middle and lower part of near skull ear (202) or tragus (203).Emitter and pick off also can be positioned in the ear lobule when being operated in reflective-mode (204) or transmission mode (205).If select to be positioned over external auditory meatus, emitter and pick off should be embedded in receiver (206) lining, because receiver can enter the external auditory meatus (207) of user.Pick off is positioned over the diverse location on the auricle or the combination of diverse location, can reaches different effects.As pick off being positioned over the top (208) of helix, detected physiological signal is subjected to the meeting of motion effect of noise less.Suitable modification can be done in above-mentioned position when adopting piezoelectric transducer instead of optical electric transducer.
Be example with the headband receiver in the present embodiment, but those skilled in the art should understand that various other wear-type devices, also can be used for realizing this utility model design philosophy as medicated cap, headband, scarf, swimming cap or earphone of being attached to electronic product (for example MP3 player) etc., as long as these wear-type devices in use, can make sensor unit be close to auricle or external auditory meatus gets final product with the induction physiological signal.Fig. 3 A～Fig. 3 D is the sketch map of several earphone models, and as medicated cap type (301), swimming cap type (302), headband type (303), wear-type is listened cartridge type (304).Above-mentioned all models can comprise a pair of optical transmitting set and the pick off (305,306,307,308) that is embedded in the ear clip, a wireless transmitter (309,310,311,312), a signal processing circuit (313,314,315,316) and battery (317,318,319,320).For wear-type receiver (304), can locate to settle again another to optical transmitting set and pick off (321) in tack (322).Earphone shown in Fig. 3 E (323) can also be the receiver that is attached to a certain electronic product (324) (for example MP3 player), and this electronic product (324) has a portable clip (325).Optical transmitting set and pick off (326) are attached to earphone (323) lining, and wireless transmitter (327), signal processing circuit (328) and battery (329) are embedded in the aforementioned electronic product (324).
The design of sensor outer housing directly influences the quality of the physiological signal that receives, and Fig. 4 A～Fig. 4 B is the sketch map of adoptable sensor outer housing.The design of sensor outer housing should reduce the variation of the contact force between optical transmitting set and pick off and the user skin as far as possible.For example, sensor outer housing can be that clip (401) or some have the material (402) pasted guaranteeing optical transmitting set and pick off (403,404) even when user moves, and the contact force between the skin is also constant.The shell insulated body of pick off (405,406,407) is wrapped in to reduce the influence of surround lighting to photoplethaysmography figure signal.Cushion (408) can lower because of long time wears the discomfort that user is caused.External medium as electric wire (409,410), can make sensor outer housing be connected with the wear-type device.
Fig. 5 is the sketch map of several stand-alone assemblies.One of them effect of stand-alone assembly is to put on wear-type device (501) as the user, and measure bio signal with after opening wear-type device 501 with pick off (502), a plurality of physiological parameters that the physiological signal that records from pick off (503) calculates can be sent in the stand-alone assembly so that show.Stand-alone assembly is except can being to may be worn on user's article on one's body, as wrist-watch (504), glasses (505) or can hang over electronic machine (506) on user's neck etc., also can be electronic machines such as PC, laptop computer (507) or palm PC.Stand-alone assembly is mainly used in and shows detected physiological parameter, and the user can promptly show after detecting once, also can detect a period of time after, just data is transferred to stand-alone assembly and shows.
Fig. 6 is the sketch map of the photoplethaysmography figure circuit of record.The light transmission of optical transmitting set (601) emission or by body part (602) reflection of user, pick off (603) receive and see through or the light of reflection and become photoplethaysmography figure.When photoplethaysmography figure by cut-off frequency too behind 1 hertz low pass filter (604), can obtain the direct current component (606) of photoplethaysmography figure; And respectively behind the band filter (605) at 0.3 hertz to 35 hertz, can obtain the AC portion (607) of photoplethaysmography figure by cut-off frequency as photoplethaysmography figure.
Fig. 7 is the sketch map of typical light Power Capacity graphy figure.When the contact skin of optical transmitting set and pick off and user, the light of optical transmitting set emission can be organized reflection, transmission or scattering by the person, and pick off receives and sees through or the light of reflection.As shown in Figure 7, this circuit can change into the signal of telecommunication with optical signal, i.e. photoplethaysmography figure and it is divided into direct current (701) and exchanges (702) part.Fig. 8 describes the various features that this utility model is seized from the AC portion of photoplethaysmography figure, as the individual pulse area (805) of interval (801), rise time (802), fall time (803), amplitude (804) and physiological signal.The pulse wave propagate time can obtain from two photoplethaysmography figure that detect at diverse location.For example Fig. 9 is the pulse wave propagate time of describing from two photoplethaysmography figure seize.Photoplethaysmography figure (901) and photoplethaysmography figure (902) obtain at the left and right ear of user respectively.The pulse wave propagate time (903) is the interval that pulse wave propagate arrives two different measuring positions.
This utility model is except that can be with the switch of manual mode by the button control physiological parameter measurement, and also the bio signal that can utilize health to send comes gauge tap.This design has reduced manual operation, has therefore reduced to measure the interference to the user daily life.Simultaneously also provide probability for reducing assembly consumption and power supply power consumption.As shown in Figure 5, after the user puts on wear-type device (501), measure bio signal and will be obeyed on face by subsides with the pick off (502) of making control wear-type device 501 switches.Pick off 502 is used for the eye of recording user or the signal of facial musculation, and wear-type device 501 is opened or closed to muscle pressure signal that prompt statement, sound, ocular movemeut or the above action that sets according to the user causes or electromyographic signal.When the user starts wear-type device 501, paste the pick off (503) of obeying and to write down physiological signal and calculate a plurality of physiological parameters in following helix top.The bio signal that this utility model is used for on-off control with near the resulting signal eyes for paying the utmost attention to.Figure 10 A～Figure 10 D is the pick off laying method sketch map as the bio signal that detects gauge tap.Figure 10 A～Figure 10 D finding with the example of receiver as earphone model (1001) in, measure bio signal and be placed on earphone model 1001 with the pick off (1002) of making control wear-type device 1001 switches and make it to press close near the user temple.Pick off 1002 can be the pressure transducer of the pressure signal political reform that occurred during as near the muscular movement of measuring the eyes, also can be as the electrode of measuring the electromyographic signal variation that is produced when near the muscular movement the eyes.For example when user blinks eyes four times continuously, pick off 1 002 measures that near the eyes muscle pressure signal changes or electromyographic signal when changing, and meets pre-provisioning request (as continuous four times electromotive force greater than predetermined value), and physiological parameter measurement will start; If when user blinks the eyes secondary continuously (electromotive force of continuous quadratic is greater than predetermined value), when pick off 1002 measured near muscle pressure signal variation of eyes or electromyographic signal variation, physiological parameter measurement will be turned off.Be that pick off 1002 can be used for writing down electronystagmogram (Electrooculogram) or electromyogram (Electromyogram).
Near using eyes muscular movement comes the gauge tap, and this utility model also can be controlled with acoustic control or because of the pressure signal that facial muscle movements sent or the electromyographic signal that cause in a minute.If the situation of acoustic control, being installed on the wear-type device (1003), being used to measure bio signal can be a mike with the pick off (1004) of making control wear-type device 1003 switches, the voice that are used for recording user are so that when analysis is opened or suspended measuring instrument.In addition, the user's voice analysis can detect from pressure signal or the electromyographic signal that facial muscle movements sent.Being used for the detection of biological signal can be obtained by one or more pick offs 1002 that are installed on the wear-type device to make gauge tap.In some cases, the bio signal gauge tap also can be installed in the stand-alone assembly.For example when stand-alone assembly is a pair of glasses (1005), be used for measuring bio signal can be installed in glasses type with the pick off (1007) of making gauge tap wear-type device (1006) stand-alone assembly 1005.Because head is approached in its position; So can be used for monitoring the particular organisms signal with as the gauge tap head.And, will be transferred into the stand-alone assembly 1005 of glasses type and be presented at one jiao (1008) of the stand-alone assembly 1005 of glasses type in the physiological parameter that the wear-type device calculates.
This utility model mainly utilizes photoplethaysmography figure to calculate various physiological parameter, and the particulars of relevant this technology is all on the books at a lot of documents.For example, heart rate can be calculated from interval 801.Changes in heart rate can be in the heart rate of each cardiac cycle statistics, as a standard deviation that connects the heart rate of several cardiac cycles.Similarly, blood pressure and blood oxygen saturation also can measure by utilizing among the photoplethaysmography figure.The technology of this respect is widely cognitive.Below be some lists of references about this technology: number be that 200410042522.4 inventor is Zhang Yuanting, Ye Long, Teng Xiaofei, Pan Songxin and Li Zhiwen in 20/05/2004 Chinese patent application for example, name is called in the Chinese patent application of " adopting the sleeveless belt continuous blood pressure measuring method of compensation automatically " and discloses the patent of utilizing photoplethaysmography figure to measure blood pressure; And at document J.G.Webster (Ed.), Design of pulse oximeters, Bristol; Philadelphia:Institute of Physics Pus., how explanation measures blood oxygen saturation in 1997.Being noted that the part physiological parameter, is to need one or above individual coefficients as the measurement of blood pressure, needs calibration process to obtain individual coefficient when therefore measuring these physiological parameters.Figure 11 is a flow chart of describing two-way wireless communication physiological parameter measurement calibration process of the present utility model.When on the user band and after starting instrument.One group of photoplethaysmography figure can be recorded (1101).Needed feature can detect (1102) from the photoplethaysmography figure that has write down, and processing method can will be subjected to the motion noise or be subjected to the feature corrigendum of surround lighting variable effect or remove (1103).After this group photoplethaysmography figure was recorded, user can be measured blood pressure (1104) at another survey meter of blood pressure (normally succusion principle) immediately.Data will be transferred to earphone (1105).When individual coefficient need calculate from one group of data of many mistakes, step 1102 can repeat to be performed after obtaining enough data (1106) to 1105, and uses the individual coefficient (1107) of the feature calculation user that detects with relative acquisition photoplethaysmography figure.Individual's coefficient can be stored in memory body in case in the future during blood pressure measurement with (1108).User can be turned off instrument (1109) after calibration process is finished.In a word, the measurement of physiological parameter can be obtained by certain calculation by the feature of photoplethaysmography figure, individual coefficient and constant, promptly is:
P
m＝f(F
i，U
j，C
k)，
Above variable is respectively: P is a physiological parameter; F is the feature that obtains from one or more photoplethaysmography figure; U be from more accurate process, obtain or by the direct individual coefficient of input of user; C is the permanent number of manufacturer.
Figure 12 is a flow chart of describing two-way wireless communication physiological parameter measurement process of the present utility model.User is put on wear-type device 103 and independent displaying assembly 106, and starting device (1201).Be embedded in the sensor record plethysmogram in the wear-type device 103, from plethysmogram, extract feature (1202) then.Noise reducing method (1203) is used to reduce the motion noise and the external environmental light intensity changes the influence to measurement result that causes.Use the user (1204) of this equipment first, need input he from another pressure value of recording of blood pressure measurement device (1205) independently.Based on the information of user input, calculate a plurality of physiological parameters (1206) of user according to the characteristic points of step 1202 and 1203 extractions.The user can select the physiological parameter (1207) of one or many record.At last, the physiological parameter of obtaining will be sent to independent displaying assembly 106 by wireless transmission method (1208).Repeating step 1202 to 1208 (1209) stops measuring process (1210) up to the user closing device.
Claims (21)
1, a kind of wear-type physiological parameter measurement instrument is characterized in that comprising:
I. ear or the head of wear-type device to be fixed in the wearer;
Ii. at least one pick off is positioned at the appropriate location of described wear-type device, thereby described at least one pick off is close to wearer's auricle or external auditory meatus with the induction physiological signal and convert thereof into the signal of telecommunication when described instrument uses;
Iii. processing unit calculates a plurality of physiological parameters to receive from the signal of telecommunication of described pick off and according to the described signal of telecommunication;
Iv. receiving element calculates described a plurality of physiological parameter with the data that receive wearer's input with the assist process unit; With
V. notification unit is announced the described a plurality of physiological parameters that record with demonstration or voice prompting mode to the wearer.
2, wear-type physiological parameter measurement instrument as claimed in claim 1 is characterized in that described processing unit, receiving element and notification unit are installed on described wear-type device.
3, wear-type physiological parameter measurement instrument as claimed in claim 1, it is characterized in that described processing unit, receiving element may be worn on the stand-alone assembly that the user is used for the stand-alone assembly of video data on one's body or is fixed on the somewhere or/and notification unit is installed on one, and communicate by letter with wireless mode with described wear-type device.
4, wear-type physiological parameter measurement instrument as claimed in claim 1 is characterized in that also comprising the bio signal gauge tap, be positioned at described wear-type device with the particular organisms signal that sends of response user's body so that enabling signal to take place.
5, wear-type physiological parameter measurement instrument as claimed in claim 3 is characterized in that also comprising the bio signal gauge tap, and the particular organisms signal that the ad-hoc location that is positioned at described stand-alone assembly sends with the response user's body is so that enabling signal to take place.
6, as claim 4 or 5 described wear-type physiological parameter measurement instrument, it is characterized in that described pick off is embedded in the wear-type device, or be attached in the sensor outer housing that links to each other with described wear-type device.
7, wear-type physiological parameter measurement instrument as claimed in claim 6 is characterized in that the top that described pick off is positioned over helix is subjected to the motion effect of noise to reduce physiological signal.
8, wear-type physiological parameter measurement instrument as claimed in claim 6 is characterized in that described wear-type device is medicated cap, headband, scarf, swimming cap or the earphone that is attached to electronic product.
9, wear-type physiological parameter measurement instrument as claimed in claim 6 is characterized in that described sensor outer housing is that clip, hook, receiver or other can paste the entity of obeying on wearer's skin.
10, wear-type physiological parameter measurement instrument as claimed in claim 6 is characterized in that described pick off is placed on can paste the contacted entity of helix, tragus, external auditory meatus and/or auricle of obeying in the wearer.
11, wear-type physiological parameter measurement instrument as claimed in claim 10 is characterized in that described sensor characterizes the capacity trace signal or the pressure pulse wave signal of peripheral blood volume-variation.
12, wear-type physiological parameter measurement instrument as claimed in claim 10 is characterized in that described pick off comprises at least one light source and at least one photoelectric sensor.
13, wear-type physiological parameter measurement instrument as claimed in claim 10 is characterized in that described pick off is that piezoelectricity, pressure are anti-, the transducer of ceramic.
14, wear-type physiological parameter measurement instrument as claimed in claim 10 is characterized in that comprising that at least one accelerometer is to detect wearer's motion.
15, wear-type physiological parameter measurement instrument as claimed in claim 14 is characterized in that comprising that at least one photoelectric sensor is with ambient light.
16, wear-type physiological parameter measurement instrument as claimed in claim 15 is characterized in that described processing unit comprises the function that the minimizing physiological signal is influenced by the periphery environmental light intensity.
17, wear-type physiological parameter measurement instrument as claimed in claim 16, it is characterized in that described processing unit comprise selection from described one or above pick off picked up signal feature to calculate the function of described physiological parameter.
18, wear-type physiological parameter measurement instrument as claimed in claim 17 is characterized in that described physiological parameter comprises systolic blood pressure, diastolic blood pressure, mean blood pressure, pulse pressure reduction, blood pressure rate, heart rate, changes in heart rate rate, blood oxygen saturation and pulse interval, pulse wave transmission time and pulse wave transmission speed.
19,, it is characterized in that described bio signal can be by near pressure signal that musculation obtained the eyes or electromyographic signal control as claim 4 or 5 described wear-type physiological parameter measurement instrument.
20,, it is characterized in that described bio signal can be by the pressure signal that musculation obtained or the electromyographic signal control of face as claim 4 or 5 described wear-type physiological parameter measurement instrument.
21,, it is characterized in that described bio signal can be by the user with the control of language or sound as claim 4 or 5 described wear-type physiological parameter measurement instrument.
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| CN 200520001171 CN2824836Y (en) | 2005-01-19 | 2005-01-19 | Head-mounted physiological parameter measuring device |
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