CN109222917A - pulse wave sensor, sensor array and pulse wave measuring method - Google Patents
pulse wave sensor, sensor array and pulse wave measuring method Download PDFInfo
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- CN109222917A CN109222917A CN201710558702.5A CN201710558702A CN109222917A CN 109222917 A CN109222917 A CN 109222917A CN 201710558702 A CN201710558702 A CN 201710558702A CN 109222917 A CN109222917 A CN 109222917A
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- 238000000034 method Methods 0.000 title abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims description 40
- 239000010408 film Substances 0.000 claims description 16
- 238000000691 measurement method Methods 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 229910002113 barium titanate Inorganic materials 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 229920000079 Memory foam Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000008210 memory foam Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 13
- 210000000707 wrist Anatomy 0.000 abstract description 6
- 210000002321 radial artery Anatomy 0.000 description 11
- 238000001514 detection method Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000541 pulsatile effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Physiology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
A pulse wave sensor, a sensor array and a pulse wave measuring method are provided. The pulse wave sensor comprises a flexible piezoelectric sensor and a static pressure sensor, wherein the flexible piezoelectric sensor is used for sensing pulse waves; the static pressure sensor is used for measuring the static pressure applied on the pulse wave sensor. The sensor of the invention separately measures static pressure signals and dynamic pulse wave pressure signals, utilizes the piezoelectric film to measure dynamic pressure fluctuation, and the piezoresistive sensor measures static pressure, so that the dynamic sensitivity is not influenced by the static pressure range, and the sensor can keep high sensitivity to pulse waves under the wide-range static pressure; the sensor adopts the flexible framework, so that the formed array can meet the wrist characteristics of different people and realize good fit on the surface of the arm.
Description
Technical field
The invention belongs to human health status Non-invasive detection technical fields, more particularly to one kind for acquiring radial artery arteries and veins
It fights the device of wave, relates more specifically to a kind of pulse wave sensor, sensor array and pulse wave measurement method.
Background technique
Pulse wave can reflect human health degree and a variety of diseases.Pulse wave measurement method is divided into intrusion and invades with non-
Enter.Intrusive pulse wave measurement method causes great damage to patient, and non-intrusion type is small to damage to patient, such as pressure sensing
Device, ultrasonic sensor, photoelectric sensor etc..These sensors can all realize non-intrusion measurement pulse wave.But current mainstream
Measurement pulse wave method remain pressure sensor survey pulse wave.Some equipment utilization film piezoresistive pressure sensors pair
Wrist multiple spot carries out pulse collection, some equipment use strain gauge as pulse wave sensor, and there are also some equipment to use
MEMS piezoresistance sensor detects pulse.The sensor dynamic range by material itself due to being limited, and sensitivity is by range system
About, under identical power supply and sensitivity, dynamometry range is bigger, and lower to the resolution ratio of power, output voltage is lower.Subsequent amplification electricity
Also only simple amplification, the excessively high voltage output under a large pressure of amplification factor are easily saturated on road.In addition it is extracted from static pressure
Dynamic Pulse increases subsequent process circuit and algorithm complexity.
The pressure sensor of simple piezoelectric principle is although have very high sensitivity and output amplitude will not be by static pressure
Power influences, but piezoelectric transducer is not capable of measuring static pressure.Therefore both sensors are independent is used for pulse wave measurement all
It cannot effectively reflect the physical condition of tested person.If it is desired to reflecting disease type by pulse wave, it is necessary in wide scope static pressure
Power acquires pulse wave.But the sensitivity of current piezoresistive transducer is determined by the range of applied force.Which results in a small amount of
Stroke pressure transducer range is not able to satisfy test request, and sensors of large measurement range output voltage is lower to the resolution capability of power, low
The pulse wave of morphological meaning cannot be exported under pressure.
In addition, existing sensor array has two, a problem is that sensor array is not able to satisfy different people
Group's arm topographies problem, array compactness difference can not ensure the fidelity of acquisition pulse wave；Another problem is sensor
Problem is interfered with each other between deformation bring sensor, the pulse wave which can be such that adjacent sensors acquire is overlapped mutually, and is influenced
Pulse wave accuracy.
It is therefore desirable to study one kind to be not only capable of measuring big static pressure, but also keep highly sensitive, range of dynamic measurement
Extensive pulse wave sensor, and form can reduce and interfere between sensor, the sensor being bonded with arm.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of pulse wave sensor, sensor array and using it
Pulse wave measuring apparatus, at least one of to solve the above technical problems.
To achieve the goals above, as one aspect of the present invention, the present invention provides a kind of pulse wave sensor, packets
Include static pressure sensor and flexible piezoelectric sensors, it is characterised in that:
The flexible piezoelectric sensors are for sensing pulse wave and generating electric signal；
The static pressure sensor is for sensing the static pressure being applied on the pulse wave sensor.
As another aspect of the present invention, the present invention also provides a kind of pulse wave sensor array, including elasticity are slow
Material and several pulse wave sensors as described above are rushed, wherein several pulse wave sensors are distributed in institute at certain intervals
It states on elastomeric cushion material.
As another aspect of the invention, the present invention also provides a kind of pulse wave measurement methods, which is characterized in that packet
Include following steps:
Pulse wave is sensed by flexible piezoelectric sensors and generates electric signal；
The static pressure being applied on the pulse wave sensor is sensed under big pressure limit by static pressure sensor.
Based on the above-mentioned technical proposal it is found that pulse wave sensor of the invention has the following beneficial effects: the sensor gram
The problem of pulse wave acquisition device can not precisely, comprehensively reflect the pulse condition information of human body in the prior art, tradition pressure are taken
Resistive transducer range is inversely proportional with sensitivity, and pulse wave sensor needs to capture weak pulsatile signals in machine with wide range, and
Traditional piezoresistance sensor is lower in machine with wide range medium sensitivity, and sensor of the invention is by static pressure signal and dynamic arteries and veins
Wave pressure of fighting force signal separately measures, and measures driven dynamic pressure fluctuation using piezoelectric membrane, and piezoresistive transducer measures static pressure, from
And dynamic sensitivity is not influenced by static pressure range, can keep highly sensitive to pulse wave under wide scope static pressure；
Sensor of the invention is used as support using the skeleton and elastomeric cushion material of strip curve form, so that the array of composition can
To meet different crowd wrist feature, realize to the good fitting of arm surface.
Detailed description of the invention
Fig. 1 is the structure principle chart of pulse wave sensor of the invention；
Fig. 2 is the schematic side view of pulse wave sensor array structure of the invention；
Fig. 3 A-3C is the flexible thin on sensor of the invention skeleton to recessed space and flexible piezoelectric sensors respectively
Positional diagram between film；
Fig. 4 is the positional diagram of pulse wave measuring apparatus and radial artery of the invention；
Fig. 5 is the front view of the positional relationship of pulse wave sensor array structure and radial artery of the invention.
In upper figure, appended drawing reference meaning is as follows:
1, sensor framework
2, the contact of flexible piezoelectric sensors 3, flexible piezoelectric sensors
4, the contact of static pressure sensor 5, static pressure sensor
6, sensor unit
6-1, first sensor unit
6-2, second sensor unit
6-3,3rd sensor unit
6-4, the 4th sensor unit
6-5, the 5th sensor unit
7, elastomeric cushion material
8, to recessed space
9, pressurizing device
10, radial artery 11, radius
12, skin
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
The present invention be in order to solve pulse wave acquisition device in the prior art can not precisely, comprehensively reflect human body
The problem of pulse condition information.Traditional piezoresistive transducer range is inversely proportional with sensitivity, and pulse wave sensor is needed in wide range model
It surrounds and seize and catches weak pulsatile signals, and traditional piezoresistance sensor is lower in machine with wide range medium sensitivity.In order to solve this problem, originally
Static pressure signal and Dynamic Pulse pressure signal are separately measured in invention, measure dynamic pressure wave using piezoelectric membrane
Dynamic, piezoresistive transducer measures static pressure, so that the sensitivity of piezoelectric film sensor is improved, so that pulse wave signal is more
It is clear to add, and accurately measures static pressure under big pressure limit.
In addition, the present invention influences each other problem and arm docile problem for sensor states in existing sensor array,
It provides and interferes with each other between a kind of mitigation sensor, and adapt to the structure of different crowd arm.
Specifically, as one aspect of the present invention, the invention discloses a kind of pulse wave sensors, including flexible piezoelectric
Sensor and static pressure sensor, in which:
Flexible piezoelectric sensors are for sensing pulse wave；
Static pressure sensor is for measuring the static pressure being applied on the pulse wave sensor.
Wherein, static pressure sensor can be piezoresistive transducer, for example including but be not limited to MEMS sensor, pressure drag
Film sensors, strain gage sensor.
Wherein, flexible piezoelectric sensors are piezoelectric pressure indicator, piezoelectric material for example including but be not limited to PVDF
(Kynoar), PZT (lead titanate piezoelectric ceramics), BaTiO3Deng.
Wherein, contact is additionally provided in flexible piezoelectric sensors, contact side is connected with skin to be measured, for being bonded hand
Arm surface and conduction pulse wave to be measured, the contact other side are connected or are in contact with the detection unit of flexible piezoelectric sensors, will
On pulse transit to be measured to the detection unit of flexible piezoelectric sensors.
Wherein, contact is also equipped on static pressure sensor, the contact of static pressure sensor is quiet for that will bear
On state pressure conduction to the detection unit of static pressure sensor.
Wherein, the material of the contact of two kinds of sensors includes but is not limited to the materials such as silica gel, foam, sponge, Shao of contact
Family name's hardness A is for example between 1-80 degree.
As another aspect of the present invention, the invention also discloses a kind of pulse wave sensor array, including elasticity are slow
Material and several above-mentioned pulse wave sensors are rushed, wherein it is slow to be distributed in the elasticity at certain intervals for several pulse wave sensors
It rushes on material.
The elastomeric cushion material for example including but be not limited to polyurethane sponge, low resilience memory foam etc., the arteries and veins can be made
The arm of wave sensor array of fighting fitting different crowd.
Several pulse wave sensors are, for example, 5, are also possible to 3,4,6,7,8,9,10, between tested wrist etc.
Away from successively arranging.Preferably, first sensor therein is affixed on rasceta close to palm side, remaining sensor successively to
The ancon direction of arm arranges.
When the external world has pressurizing device to apply pressure to the pulse wave sensor array, static pressure sensor impression is come from
The static pressure of elastomeric cushion material transmitting above sensor array, flexible piezoelectric sensors are used to measure radial artery pulsation,
It is final to realize detection of the pulse wave sensor array to radial pulse signal at various pressures.
As another aspect of the invention, the invention also discloses a kind of pulse wave measurement methods, comprising the following steps:
Pulse wave is sensed by flexible piezoelectric sensors and generates electric signal；
The static pressure being applied on the pulse wave sensor is sensed under big pressure limit by static pressure sensor.
Wherein, static pressure sensor is MEMS sensor, pressure drag film sensors or strain gage sensor；Flexible piezoelectric
Sensor is piezoelectric pressure indicator, and piezoelectric material uses PVDF, PZT or BaTiO3Material；Preferably, flexible piezoelectric passes
Sensor is flexible thin film sensor.
In certain embodiments, pulse wave sensor of the invention, including sensor framework, flexible piezoelectric sensing
Device, flexible piezoelectric sensors contact, static pressure sensor, static pressure sensor contact.Wherein sensor framework concave side with
Flexible piezoelectric sensors are connected, and are used to support the flexible piezoelectric sensors；The sensor framework other side and static pressure sensor
It is connected, is used to support the static pressure sensor.The flexible piezoelectric sensors other side is connected with flexible contacts, for experiencing contact
The pulse wave conducted.The contact other side is connected with skin, for being bonded arm surface and conduction pulse wave.Static pressure sensing
The device other side is connected with pressurizing device, for detecting integral pressure suffered by this sensor structure.Wherein static pressure senses
Device is piezoresistive transducer, including but not limited to MEMS sensor, pressure drag film sensors, strain gage sensor.Flexible piezoelectric
Sensor is piezoelectric pressure indicator, and piezoelectric material includes but is not limited to PVDF, PZT, BaTiO3Equal materials.The material of contact
The including but not limited to materials such as silica gel, foam and sponge.
In certain embodiments, pulse wave sensor array of the invention, including a porous elastic buffering material material
With five pulse wave sensors, porous elastic buffering material material is connect with five sensors, porous elastic buffering material material and static pressure
Force snesor structure side is connected, and for absorbing buffering, reduces vibration interference and foreign impacts interference between sensor.In addition, more
Hole elastomeric cushion material can make sensor array be bonded different crowd arm.Porous elastic buffering material material is not limited to polyurethane
Sponge, low resilience memory foam etc..
Each sensor is equidistantly successively arranged along wrist.First sensor is close to rasceta palm side, and the second to five
Sensor is successively arranged from rasceta arm side.The distribution can be adapted for different crowd arm length, increase radial artery wave
Dynamic detection length.
Explanation is further elaborated to several specific embodiments of the invention with reference to the accompanying drawing.
As shown in Figs. 1-5, pulse wave sensor of the invention includes sensor framework 1, flexible piezoelectric sensors 2, flexibility
The contact 3 of piezoelectric transducer, static pressure sensor 4 and static pressure sensor contact 5.The contact of flexible piezoelectric sensors
3 contact with skin 12, and the material property of the contact 3 of flexible piezoelectric sensors can be bonded skin, flexible piezoelectric sensors
Contact 3 possess certain elastic deformation the pulse wave of arm radial artery 10 can be made to pass to flexible piezoelectric sensors 2.Flexible piezoelectric
Sensor is fitted on sensor framework 1 with bending state, and the pulse wave that it conducts the contact 3 of flexible piezoelectric sensors fluctuates
It is converted into electric signal, is exported the electric signal of conversion by the two poles of the earth of flexible piezoelectric sensors 2.When radial artery 10 is beated to skin
12 1 power, this power receive and pass to flexible piezoelectric sensors 2 by the contact 3 of flexible piezoelectric sensors, and flexible piezoelectric passes
Sensor 2 is exportable electric signal.
As shown in Figure 4,5, sensor framework 1 is the curve form of strip, and one side is that flexible piezoelectric sensors 2 provide
Support, as shown in Figure 3A, it includes one to recessed space 8 that sensor framework 1, which connects the side of flexible piezoelectric sensors 2, soft
Property piezoelectric transducer 2 be laid in 8 top of recessed space, edge is fixed on to recessed 8 periphery of space, is as shown in Figure 3A
Surrounding is fixed, and the fexible film to recessed 8 top of space is hanging at this time.This hanging structure makes flexible piezoelectric sensors 2
Fexible film suffered by positive pressure be converted to around pull power, to greatly improve what fexible film was born
Pressure, therefore it is made to generate bigger piezoelectric signal, to improve transducer sensitivity.1 other side of sensor framework is fixed
Static pressure sensor 4,4 other side of static pressure sensor is connected with pressurizing device 9, for detecting suffered by this sensor structure
The integral pressure arrived.Wherein pressurizing device 9 is for example, by using inflatable bandage or expandable air bag etc.
As shown in figure 4, sensor array includes porous elastomeric cushion material 7 and five above-mentioned pulse wave sensor 6-
1,6-2,6-3,6-4,6-5.The sensor array is laid on tested arm, due to the characteristic of elastomeric cushion material 7, five biographies
Sensor 6-1,6-2,6-3,6-4,6-5 can be attached to arm surface according to tested person's hand-type.The elastic buffer when beat pulse
Material 7 can also absorb extra impact, reduce influence of the beat pulse point to approaching sensor under a certain sensor, reduce
It is interfered with each other between sensor.
The sensor array is for detecting the beat pulse of radial artery 10 at various pressures nearby of radius 11.Each sensing
Device is equidistantly successively arranged along wrist.First sensor 6-1 close to rasceta palm side, the second to five sensor 6-2,6-3,
6-4,6-5 are successively arranged from rasceta arm side.The distribution can be adapted for different crowd arm length, increase radial artery 10
Fluctuation detection length.When the external world has pressurizing device 9 to apply pressure to sensor array, the impression of static pressure sensor 4 is come from
The static pressure that elastomeric cushion material 1 transmits above sensor, flexible piezoelectric sensors 2 are for measuring radial artery pulsation.Finally
Realize that sensor array detects radial pulse signal at various pressures.
As the mutation of above embodiment, as shown in Fig. 3 B, 3C, the fexible film of flexible piezoelectric sensors 2 can be only
There is two sides to fix (Fig. 3 B)；Or three face fix (Fig. 3 C), wherein oblique line portion is indicated to recessed space 8 and fexible film
Overlapping part；Or this is suspended in recessed 8 top of space by the fixture of stretching completely；These do not influence of the invention
The realization of technical effect.In addition, the folding and deformation of the fexible film of flexible piezoelectric sensors 2 in order to prevent, it can be soft at this
Property film on reinforcing rib or gib block are set are bent it to fixed certain directions as far as possible, to avoid its malfunction.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of pulse wave sensor, including static pressure sensor and flexible piezoelectric sensors, it is characterised in that:
The flexible piezoelectric sensors are for sensing pulse wave and generating electric signal；
The static pressure sensor is for sensing the static pressure being applied on the pulse wave sensor.
2. pulse wave sensor as described in claim 1, which is characterized in that the static pressure sensor is MEMS sensing
Device, pressure drag film sensors or strain gage sensor.
3. pulse wave sensor as described in claim 1, which is characterized in that the flexible piezoelectric sensors are piezoelectric pressure
Sensor, piezoelectric material use PVDF, PZT or BaTiO3Material.
4. pulse wave sensor as described in claim 1, which is characterized in that the flexible piezoelectric sensors are fexible film biography
Sensor.
5. pulse wave sensor as described in claim 1, which is characterized in that the flexible piezoelectric sensors and/or static pressure
Contact is provided on force snesor, the material of the contact is preferably silica gel, foam or sponge.
6. pulse wave sensor as described in claim 1, which is characterized in that the sensor framework be segment, cylindrical body or
Bend to the elongate body of curved surface.
7. a kind of pulse wave sensor array, including elastomeric cushion material and several as described in claim 1 to 6 any one
Pulse wave sensor, wherein several pulse wave sensors are distributed at certain intervals on the elastomeric cushion material.
8. pulse wave sensor array as claimed in claim 7, which is characterized in that the elastomeric cushion material is polyurethane sea
Continuous or low resilience memory foam；
Preferably, the number of the pulse wave sensor is 3,4,5,6,7,8,9 or 10.
9. a kind of pulse wave measurement method, comprising the following steps:
Pulse wave is sensed by flexible piezoelectric sensors and generates electric signal；
The static pressure being applied on the pulse wave sensor is sensed under big pressure limit by static pressure sensor.
10. pulse wave measurement method as claimed in claim 9, which is characterized in that the static pressure sensor is MEMS biography
Sensor, pressure drag film sensors or strain gage sensor；
The flexible piezoelectric sensors are piezoelectric pressure indicator, and piezoelectric material uses PVDF, PZT or BaTiO3Material；
Preferably, the flexible piezoelectric sensors are flexible thin film sensor.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110292366A (en) * | 2019-06-27 | 2019-10-01 | 中国科学院微电子研究所 | Pulse signal processing circuit and acquisition system based on piezoresistive pressure sensor |
| CN110811570A (en) * | 2019-11-21 | 2020-02-21 | 中国中医科学院 | Doctor four-diagnosis process recording method |
| CN112137599A (en) * | 2019-06-26 | 2020-12-29 | 中国科学院深圳先进技术研究院 | Pulse detection device and manufacturing method thereof |
| CN112690766A (en) * | 2020-12-29 | 2021-04-23 | 上海掌门科技有限公司 | Method and equipment for measuring pulse information of user by pulse feeling equipment |
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