CN208524857U - Based on numerically controlled blood pressure self-operated measuring unit - Google Patents
Based on numerically controlled blood pressure self-operated measuring unit Download PDFInfo
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- CN208524857U CN208524857U CN201720811838.8U CN201720811838U CN208524857U CN 208524857 U CN208524857 U CN 208524857U CN 201720811838 U CN201720811838 U CN 201720811838U CN 208524857 U CN208524857 U CN 208524857U
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Abstract
The utility model relates to blood pressure detecting technical fields, are related to a kind of based on numerically controlled blood pressure self-operated measuring unit.The measuring device includes: volume pulsation wave acquisition module, is used to acquire the volume pulsation wave of measurement object, and handled volume pulsation wave collected to obtain photoplethysmographic；Blood pressure acquisition module is used for the blood pressure information of timing acquiring measurement object, and is handled blood pressure information collected to obtain blood pressure digital signal；And processing module, it includes first processing units and the second processing unit, first processing units are used to be sent to the second processing unit to blood pressure digital signal reception and after handling, and the second processing unit is used to extract multiple characteristic points of photoplethysmographic and multiple characteristic point and blood pressure digital signal are fitted calculation process jointly to establish blood pressure parameter measurement model.The utility model preferably realizes automatic, the continuous measurement to blood pressure.
Description
Technical field
The present invention relates to blood pressure detecting technical fields, are surveyed automatically specifically, being related to one kind based on numerically controlled blood pressure
Measure device.
Background technique
Blood circulation is promoted by heartbeat and blood is made to be formed by pressure to vascular wall, is exactly the blood usually said
Pressure, blood pressure are the important physiological parameters for reflecting human recycle system's function.The automatic continuous measurement of blood pressure medically has great
Practical significance, such as on clinical medicine to urgent patient and operation in patient with severe symptoms require carry out blood pressure continuous prison
Control, once so that unexpected medical staff occurs in patient can take effective rescue measure in time.
Existing main utilization sphygmomanometer or pulse wave translation time measure blood pressure, but two kinds of blood pressure measurement modes exist
Certain shortcoming.For by blood pressure measuring take blood pressure in the way of for, measured blood pressure parameter is because of vessel wall elasticity
Equal factors influence, and cannot achieve the purpose that continuously to measure.For by pulse wave translation time measurement blood pressure in the way of and
Speech, existing is usually to carry out while measuring by different parts of two pulse wave sensors to same individual, identifies two-way wave
Just as the time difference of a characteristic point, pulse wave translation time is obtained, to establish the blood pressure measurement based on pulse wave translation time
Model, but the measurement model and its be easy by external interference, and measurement model can fail and then model when measuring for a long time
Coefficient need to be fitted again, therefore be not suitable for continuously and automatically blood pressure measurement yet.
Summary of the invention
The present invention provides one kind to be based on numerically controlled blood pressure self-operated measuring unit, can preferably realize blood pressure
Automatically, continuously measure.
It is according to the present invention to be based on numerically controlled blood pressure self-operated measuring unit comprising:
Volume pulsation wave acquisition module is used to acquire the volume pulsation wave of measurement object, and to volume arteries and veins collected
Wave of fighting is handled to obtain photoplethysmographic；
Blood pressure acquisition module, is used for the blood pressure information of timing acquiring measurement object, and to blood pressure information collected into
Row processing is to obtain blood pressure digital signal；And
Processing module comprising first processing units and the second processing unit, the second processing unit is for extracting photoelectricity
Multiple characteristic points of volume pulsation wave simultaneously establish blood pressure parameter measurement model, and first processing units are for connecing blood pressure digital signal
It receives and is sent to the second processing unit after handling to be timed correction to blood pressure parameter measurement model.
In the present invention, it can be sampled, be located by volume pulsation wave of the volume pulsation wave acquisition module to measurement object
Reason, to obtain the photoplethysmographic of digital signal form and be sent to the second processing unit；The second processing unit later
Multiple characteristic points of photoplethysmographic can be extracted and calculating is fitted to multiple characteristic point, to establish blood pressure
Parameter measurement model.It, can be preferably according to adopting once the foundation of blood pressure parameter measurement model finishes that is, in the present invention
The volume pulsation wave collected obtains the blood pressure of acquisition target, to preferably realize the automatic measurement of blood pressure.
In the present invention, the second processing unit can divide photoplethysmographic signal using existing threshold method
Analysis, to extract multiple characteristic points such as main wave, tidal wave, dicrotic pulse wave crest, dicrotic pulse trough and trough.
In the present invention, the second processing unit can be fitted meter to the multiple characteristic point according to langbobier law
Calculate, the method for the Fitting Calculation is existing method, specifically: by the multiple characteristic point and pulse wave rising stage (systole phase) and
The blood flow variable quantity progress simultaneous that pulse wave declines phase (diastole) and graphics area represents, to establish blood pressure parameter measurement
Model.
In addition, and particular, it is important that blood pressure acquisition module of the invention be capable of timing to measurement object carry out blood
Pressure measurement, and the data returned at blood pressure acquisition module can be parsed by first processing units, so as to timing
It obtains the blood pressure parameter (such as mean pressure, systolic pressure and diastolic pressure) of measurement object and is sent to the second processing unit；Later
The blood pressure parameter uploaded at first processing units can be fitted with above-mentioned multiple characteristic points by two processing units automatically, from
And preferably realize the correction to blood pressure parameter measurement model；It is designed by this kind, can preferably guarantee that blood pressure parameter is surveyed
The real-time accuracy for measuring model, to preferably realize automatic, the continuous measurement to blood pressure.
In the present invention, the correlation models of volume pulsation wave characteristic point and blood pressure parameter are established by the second processing unit
(blood pressure parameter measurement model) calculates blood pressure parameter, and using blood pressure acquisition module timing acquiring standard blood parameter to the correlation
Property model timing be corrected, so as to preferably realize the correction to the blood pressure parameter acquired by volume pulsation wave,
To which the measurement accuracy of blood pressure self-operated measuring unit in the present invention be improved greatly.Blood pressure automatic measurement dress of the invention
It sets and preferably overcomes existing sphygmomanometer measurement method and cannot continuously measure and measure not quick enough problem, and, existing utilization
The not accurate enough problem of pulse wave translation time measurement method, be provided simultaneously with equipment simple, human blood glucose, it is easy to operate, at
The advantages that this is lower.
Preferably, being equipped with the storage unit for data storage and the display for data output at the second processing unit
Unit.The setting of storage unit can preferably store the data obtained, and display unit can be preferably at second
Data at reason unit are shown, and can pass through wireless (such as bluetooth, wi-fi) between display unit and the second processing unit
Communication.
Preferably, blood pressure acquisition module includes pressure generating unit, pressure unit, pressure sensor, the first signal tune
Unit and the first A/D converting unit are managed, pressure generating unit is used to provide pressure source to pressure unit, and pressure unit is used for survey
The measurement point for measuring object applies pressure, and pressure sensor is used to acquire the blood pressure information of measurement object, the first signal condition list
For member for amplifying, filtering to pressure sensor signal collected, the first A/D converting unit is used for will be through the first signal tune
Signal after reason cell processing is converted into digital signal and is sent to processing module.To preferably realize to acquisition target
Blood pressure measurement.
Preferably, pressure generating unit includes air pump, pressure unit includes sphygmomanometer sleeve bag, and air pump is used for sphygmomanometer
It is pumped into gas in sleeve bag, is additionally provided with a solenoid valve for gas discharge at sphygmomanometer sleeve bag, air pump and solenoid valve are by one the
The driving of one driving unit, the control signal of the first driving unit are generated by first processing units.To preferably realize to blood
The automatic inflating of pressure meter sleeve bag and exhaust, and then be conducive to the realization of blood pressure information automatic collection.
Preferably, being equipped with a splitter at sphygmomanometer sleeve bag, splitter includes splitter cavity and connects with branch's cavity
Logical 1 splitter air inlet pipe, 3 splitter escape pipes, the gas outlet access tributary device air inlet pipe of air pump, 3 branches
Device escape pipe is respectively used to setting solenoid valve, setting pressure sensor and access sphygmomanometer sleeve bag.To preferably realize pair
The blood pressure measurement of acquisition target.
Preferably, volume pulsation wave acquisition module includes that pulse transducer, second signal conditioning unit and the 2nd A/D turn
Block is changed the mold, pulse transducer is used to acquire the volume pulsation wave of measurement object and is converted into electric signal, second signal conditioning unit
It amplifies, filter for the electric signal after being converted to pulse transducer, the 2nd A/D conversion module is used for will be through second signal tune
Analog signal after reason cell processing is converted into the photoplethysmographic of digital signal form.It is adopted so as to preferably obtain
Collect the photoplethysmographic of object.
Preferably, pulse transducer includes illuminating module and light receiving unit, illuminating module is used for measurement object
Measurement point emission measurement light beam, light receiving unit for receive measuring beam at measurement object the optical signal of reflected light and turn
It is changed to electric signal；Illuminating module includes red emission pipe and near infrared emission pipe, and red emission pipe and near infrared emission pipe are used for
Emission measurement light beam is successively distinguished under the driving of one second driving unit, the second driving unit controls signal by second processing list
Member generates；Light receiving unit includes photoelectric receiving tube, and photoelectric receiving tube is used for the anti-of red emission pipe and near infrared emission pipe
It penetrates after optical signal is converted to electric signal and is sent to second signal conditioning unit.Red emission pipe, near infrared emission pipe and photoelectricity connect
Closed tube together constitutes reflective pulse transducer, pulse transducer can and the measurement between reflected light light intensity obtain
The waveform of volume pulsation wave is taken, the second processing unit is sent to by the processing of second signal conditioning unit later, thus preferably
Ground realizes acquisition and processing to volume pulsation wave.
In addition, the present invention is based on any one of the above blood pressure self-operated measuring units to provide one kind based on numerically controlled blood
Method for automatic measurement is pressed, to preferably realize automatic, the continuous measurement to blood pressure.
It is according to the present invention to be based on numerically controlled blood pressure method for automatic measurement comprising following steps:
(1) volume pulsation wave at measurement object arteria brachialis is acquired by volume pulsation wave acquisition module and is converted into number
The photoplethysmographic of signal form；
(2) multiple characteristic points of photoplethysmographic are extracted using the second processing unit, and to multiple characteristic point
It is fitted calculation process, and then establishes out blood pressure parameter measurement model；
(3) it uses the blood pressure information of blood pressure acquisition module timing acquiring measurement object and is converted into digital signal, Zhi Houtong
The digital signal that first processing units export blood pressure acquisition module is crossed to be handled to obtain mean pressure, systolic pressure and diastole
Pressure；
(4) blood pressure parameter measurement model out is carried out according to the data that first processing units are sent by the second processing unit
Fitting correction.
Provided method through the invention can preferably the blood pressure to acquisition target carry out continuously, compared with high precision
Ground measurement.
Preferably, being fitted operation to the multiple characteristic point according to Beer-Lambert Law in step (2).Due to
Being fitted operation to the multiple characteristic point by Beer-Lambert Law is a more mature prior art, consequently facilitating
The foundation of blood pressure parameter measurement model.
Preferably, being stored using a storage unit to the data at the second processing unit, using a display unit
The data of the second processing unit output are shown.So as to preferably realize the storage and output to data.
Detailed description of the invention
Fig. 1 is the schematic diagram of the blood pressure self-operated measuring unit in embodiment 1；
Fig. 2 is the system block diagram of the blood pressure self-operated measuring unit in embodiment 1；
Fig. 3 is the circuit block diagram of the blood pressure acquisition module in embodiment 1；
Fig. 4 is the circuit block diagram of the volume pulsation wave acquisition module in embodiment 1；
Fig. 5 is the flow chart of the blood pressure method for automatic measurement in embodiment 1.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.It should be understood that
, embodiment be only to the present invention explain and and it is non-limiting.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of based on numerically controlled blood pressure self-operated measuring unit.Comprising: hold
Product pulse wave acquisition module 110 is used to acquire the volume pulsation wave of measurement object, and carries out to volume pulsation wave collected
Processing is to obtain photoplethysmographic；Blood pressure acquisition module 120 is used for the blood pressure information of timing acquiring measurement object, and
Blood pressure information collected is handled to obtain blood pressure digital signal；And processing module comprising first processing units
And the second processing unit, the second processing unit are used to extract multiple characteristic points of photoplethysmographic and establish blood pressure parameter
Measurement model, first processing units are used to be sent to the second processing unit to blood pressure digital signal reception and after handling to blood
Pressure parameter measurement model is timed correction.
In the present embodiment, it can be adopted by volume pulsation wave of the volume pulsation wave acquisition module 110 to measurement object
Sample, processing, to obtain the photoplethysmographic of digital signal form and be sent to the second processing unit；Second processing later
Unit can extract multiple characteristic points of photoplethysmographic and be fitted calculating to multiple characteristic point, to establish
Blood pressure parameter measurement model.That is, in the present embodiment, it, can be preferably once the foundation of blood pressure parameter measurement model finishes
The blood pressure that acquisition target is obtained according to collected volume pulsation wave, to preferably realize the automatic measurement of blood pressure.
In the present embodiment, the second processing unit analyzes photoplethysmographic signal using existing threshold method,
To extract multiple characteristic points such as main wave, tidal wave, dicrotic pulse wave crest, dicrotic pulse trough and trough.
In the present embodiment, the second processing unit is fitted calculating to the multiple characteristic point according to langbobier law,
The method of the Fitting Calculation is existing method, specifically: by the multiple characteristic point and pulse wave rising stage (systole phase) and arteries and veins
The blood flow variable quantity progress simultaneous that wave of fighting declines phase (diastole) and graphics area represents, to establish blood pressure parameter measurement mould
Type.
In addition, and particular, it is important that blood pressure acquisition module 120 be capable of timing to measurement object carry out blood pressure survey
Amount, and the data returned at blood pressure acquisition module 120 can be parsed by first processing units, so as to periodically obtain
It takes the blood pressure parameter (such as mean pressure, systolic pressure and diastolic pressure) of measurement object and is sent to the second processing unit；Later second
The blood pressure parameter uploaded at first processing units can be fitted with above-mentioned multiple characteristic points by processing unit automatically, thus
Preferably realize the correction to blood pressure parameter measurement model；It is designed by this kind, can preferably guarantee that blood pressure parameter measures
The real-time accuracy of model, to preferably realize automatic, the continuous measurement to blood pressure.
In addition, in the present embodiment, first processing units and the second processing unit are all made of MCU and realize and each other can be with
Wireless mode carries out data interaction.Certainly, first processing units and the second processing unit can also be handed over by data/address bus
Mutually.
In the present embodiment, the correlation models of volume pulsation wave characteristic point and blood pressure parameter are established by the second processing unit
(blood pressure parameter measurement model) calculates blood pressure parameter, and using 120 timing acquiring standard blood parameter of blood pressure acquisition module to this
Correlation models timing is corrected, so as to preferably realize the school to the blood pressure parameter acquired by volume pulsation wave
Just, so that the measurement accuracy of blood pressure self-operated measuring unit in the present embodiment be improved greatly.The blood pressure of the present embodiment is certainly
Dynamic measuring device, which preferably overcomes existing sphygmomanometer measurement method, cannot continuously measure and measure not quick enough problem, and,
The existing problem not accurate enough using pulse wave translation time measurement method, is provided simultaneously with that equipment is simple, human blood glucose, operation
Easy, the advantages that cost is relatively low.
In addition, being additionally provided in the present embodiment, at the second processing unit for the storage unit of data storage and for data
The display unit of output.The setting of storage unit can preferably store the data obtained, and display unit can be preferable
Ground shows the data at the second processing unit, and can pass through wireless (this reality between display unit and the second processing unit
Apply in example using bluetooth) communication.
As shown in connection with fig. 2, blood pressure acquisition module 120 includes pressure generating unit, pressure unit, pressure sensor, first
Signal conditioning unit and the first A/D converting unit, pressure generating unit are used to provide pressure source to pressure unit, and pressure unit is used
In applying pressure to the measurement point of measurement object, pressure sensor is used to acquire the blood pressure information of measurement object, the first signal
For conditioning unit for amplifying, filtering to pressure sensor signal collected, the first A/D converting unit is used for will be through first
Treated that signal is converted into digital signal and is sent to processing module for signal conditioning unit.
As shown in connection with fig. 3, pressure generating unit includes air pump, and pressure unit includes sphygmomanometer sleeve bag, and air pump is used for blood
Be pumped into gas in pressure meter sleeve bag, be additionally provided with a solenoid valve for gas discharge at sphygmomanometer sleeve bag, air pump and solenoid valve by
The driving of one first driving unit, the control signal of the first driving unit are generated by first processing units.In addition, at sphygmomanometer sleeve bag
Equipped with a splitter, splitter includes splitter cavity and 1 splitter air inlet pipe being connected to branch cavity, 3 splitters
Escape pipe, the gas outlet access tributary device air inlet pipe of air pump, 3 splitter escape pipes are respectively used to setting solenoid valve, set
Set pressure sensor and access sphygmomanometer sleeve bag.
In the present embodiment, since pressure unit includes sphygmomanometer sleeve bag, so as to preferably be set at measurement object.
In the present embodiment, the first driving unit includes the driving circuit for respectively driving air pump and solenoid valve, this makes
First processing units can automatically control air pump and solenoid valve respectively, to preferably realize to sphygmomanometer sleeve bag
Automatic inflating and exhaust, and then be conducive to the realization of blood pressure information automatic collection；In addition, between air pump and splitter air inlet pipe also
Equipped with pressure regulating unit, pressure regulating unit can stablize the charge air flow at sphygmomanometer sleeve bag, this makes right
When blood pressure information is acquired, can preferably it realize to the homogenous charge at sphygmomanometer sleeve bag, so that pressure sensor
Accurately the blood pressure information of measurement object can be acquired in aeration phase, and then greatly improve acquired blood pressure letter
The accuracy and efficiency of breath.
In the present embodiment, pressure sensor is for the stream pressure at measurement branches device cavity, and pressure sensor exports
Signal through the first signal conditioning unit processing after be uploaded to first processing units.
In the present embodiment, solenoid valve can be connected by rubber tube with corresponding splitter escape pipe, consequently facilitating setting.
In the present embodiment, first processing units can drive accordingly according to the blood pressure situation of measurement object, timing controlled
The operation of circuit drives air pump, and enable to air pump evenly to inflate into sphygmomanometer sleeve bag by adjusting pressure regulating unit
And reach certain value, in gas replenishment process, pressure sensor can be preferably acquired the blood pressure information of measurement object；Together
When, blood pressure signal collected can be converted into electric signal and be sent to the first signal conditioning unit by pressure sensor；First
Signal conditioning unit includes pre-amplifier unit, filter unit and second level amplifying unit, so as to export to pressure sensor
Signal carry out second level amplification and filtering, and then interference preferably can be removed to the signal of pressure sensor output.Later, exist
When being measured, first processing units are run by corresponding driving circuit drive magnetic valve, to preferably realize to blood
The automatic Rapid degassing of pressure meter sleeve bag.
In the present embodiment, pressure sensor uses piezoelectric transducer, and pressure regulating unit uses flow valve.
In addition, volume pulsation wave acquisition module 110 turns including pulse transducer, second signal conditioning unit and the 2nd A/D
Block is changed the mold, pulse transducer is used to acquire the volume pulsation wave of measurement object and is converted into electric signal, second signal conditioning unit
It amplifies, filter for the electric signal after being converted to pulse transducer, the 2nd A/D conversion module is used for will be through second signal tune
Analog signal after reason cell processing is converted into the photoplethysmographic of digital signal form.
As shown in connection with fig. 4, pulse transducer includes illuminating module and light receiving unit, and illuminating module is used for measurement object
Measurement point emission measurement light beam, light receiving unit is used to receive the optical signal of measuring beam reflected light at measurement object simultaneously
Be converted to electric signal；Illuminating module includes red emission pipe 111 and near infrared emission pipe 112, red emission pipe 111 and near-infrared
Transmitting tube 112 is used to successively distinguish under the driving of one second driving unit emission measurement light beam, the second driving unit control letter
It number is generated by the second processing unit；Light receiving unit includes photoelectric receiving tube 113, and photoelectric receiving tube 113 is used for red emission
The reflected light signal of pipe 111 and near infrared emission pipe 112 is sent to second signal conditioning unit after being converted to electric signal.
In the present embodiment, volume pulsation wave acquisition module 110 further includes a pulse folder, red emission pipe 111, near-infrared
Transmitting tube 112 and photoelectric receiving tube 113 are set at pulse folder, are enable to that pulse transducer is preferably set to measurement
At multiple positions of object, such as finger tip, ear-lobe, forehead, wrist.In addition, the clamping power that the pulse in the present embodiment presss from both sides can
It is automatically adjusted by the second processing unit, so that, the second processing unit can be according to measurement object pulse signal
Power automatically by adjust pulse folder it is elastic and realize the laminating degree of pulse transducer and measurement object is adjusted, this
Can more quickly and accurately the volume pulsation wave of measurement object be adjusted by allowing for pulse transducer.
In the present embodiment, red emission pipe 111, near infrared emission pipe 112 and photoelectric receiving tube 113 together constitute reflection
The pulse transducer of formula, pulse transducer can and the measurement to reflected light light intensity indirect gain volume pulsation wave wave
Shape is sent to the second processing unit by the processing of second signal conditioning unit later, to preferably realize to volume arteries and veins
It fights the acquisition and processing of wave.
In the present embodiment, volume pulsation wave acquisition module 110 can pass through second when being acquired to volume pulsation wave
Processing unit sends control signal to the second driving unit, so that red emission pipe 111 and near infrared emission pipe 112 can
Successively emission measurement light beam, among these, the second driving unit include being respectively used to driving red emission pipe 111 and near infrared emission
The driving circuit of pipe 112；Later, photoelectric receiving tube 113 can receive optical signal that measurement object reflects measuring beam simultaneously
Electric signal is converted to, which is original photoplethysmographic signal, the original photoplethysmographic signal
It is more faint and be analog signal；Later, original photoplethysmographic signal can at second signal conditioning unit into
The amplification of row second level and filtering, so as to obtain the photoplethysmographic that intensity is larger, interference is smaller and more smooth；In addition
Afterwards, the 2nd A/D conversion module can treated that analog signal is converted to digital signal and sends by second signal conditioning unit
To the second processing unit, so that the second processing unit can preferably obtain photoplethysmographic signal.
In the present embodiment, the second processing unit includes calculating analytical unit, and existing calculation can be used by calculating analytical unit
Method/functional module handles the photoplethysmographic received, so as to extract in photoplethysmographic
Multiple characteristic points are fitted calculating to multiple characteristic point in turn, so as to preferably establish volume pulsation wave characteristic point with
Correlation models between blood pressure parameter, i.e. blood pressure parameter measurement model.
In the present embodiment, blood pressure parameter measurement model is established according to langbobier law.
In addition, the blood pressure self-operated measuring unit based on the present embodiment, the present embodiment additionally provides a kind of based on digital control
Blood pressure method for automatic measurement comprising following steps:
(1) volume pulsation wave at measurement object arteria brachialis is acquired by volume pulsation wave acquisition module 110 and be converted into
The photoplethysmographic of digital signal form；
(2) multiple characteristic points of photoplethysmographic are extracted using the second processing unit, and to multiple characteristic point
It is fitted calculation process, and then establishes out blood pressure parameter measurement model；
(3) it uses the blood pressure information of 120 timing acquiring measurement object of blood pressure acquisition module and is converted into digital signal, later
Handled by the digital signal that first processing units export blood pressure acquisition module 120 with obtain mean pressure, systolic pressure and
Diastolic pressure；
(4) blood pressure parameter measurement model out is carried out according to the data that first processing units are sent by the second processing unit
Fitting correction.
In the present embodiment, in step (2), operation is fitted to the multiple characteristic point according to Beer-Lambert Law.
In the present embodiment, the data at the second processing unit are stored using a storage unit, it is single using a display
The data that member exports the second processing unit are shown.
As shown in connection with fig. 4, automatic, continuous blood is carried out to measurement object using the blood pressure self-operated measuring unit of the present embodiment
When pressure measurement, sphygmomanometer sleeve bag can be set to first at the upper arm arteria brachialis of measurement object, while setting pulse folder, in order to
Hydrostatic pressing is eliminated, also should be guaranteed that measurement object level lies low or arm is placed in parallel and is located at same level with heart；It
Afterwards, volume pulsation wave acquisition module 110 is at working condition, so that the volume pulsation wave to measurement object is handled,
And blood pressure parameter measurement model is established out by the second processing unit；It is also single by the first processing meanwhile during continuous measurement
The blood pressure information of member control 120 timing acquiring measurement object of blood pressure acquisition module is simultaneously sent to the second processing unit, so that
The second processing unit can periodically be corrected blood pressure parameter measurement model.
In the present embodiment, a cycle of operation of blood pressure acquisition module 120 is as follows: firstly, passing through first processing units control
Solenoid valve cut-off processed；Later, air pump operation is controlled by first processing units, and slow by pressure regulating unit control air pump
Equably sphygmomanometer sleeve bag is linearly inflated, to gradually pressurize to the upper arm of measurement object；In gas replenishment process, pressure sensing
Device is worked and acquires the stream pressure at splitter cavity, and the signal of pressure sensor output is through the first signal condition list
First processing units are uploaded to after member processing, first processing units are joined according to the blood pressure that the signal received calculates measurement object
Number (including mean pressure, systolic pressure and diastolic pressure) is simultaneously sent to the second processing unit；Later, certain value is pumped into air pump (to be enough
Guarantee pressure sensor complete detection) gas after, by first processing units control air pump close, solenoid valve open, thus
The gas in sphygmomanometer sleeve bag is discharged.Blood pressure acquisition module 120 repeats above-mentioned movement when next timing length reaches.
In the present embodiment, the timing controlled to blood pressure acquisition module 120 can be realized by first processing units.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (7)
1. being based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: including,
Volume pulsation wave acquisition module (110) is used to acquire the volume pulsation wave of measurement object, and to volume arteries and veins collected
Wave of fighting is handled to obtain photoplethysmographic；
Blood pressure acquisition module (120), is used for the blood pressure information of timing acquiring measurement object, and to blood pressure information collected into
Row processing is to obtain blood pressure digital signal；And
Processing module comprising first processing units and the second processing unit, the second processing unit is for extracting photoelectricity volume
Multiple characteristic points of pulse wave simultaneously establish blood pressure parameter measurement model, and first processing units are used for blood pressure digital signal reception simultaneously
The second processing unit is sent to after processing to be timed correction to blood pressure parameter measurement model.
2. according to claim 1 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: second processing list
The storage unit for data storage and the display unit for data output are equipped at member.
3. according to claim 1 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: blood pressure acquires mould
Block (120) includes that pressure generating unit, pressure unit, pressure sensor, the first signal conditioning unit and the first A/D conversion are single
Member, pressure generating unit are used to provide pressure source to pressure unit, and pressure unit is used to apply to the measurement point of measurement object
Pressure, pressure sensor are used to acquire the blood pressure information of measurement object, and the first signal conditioning unit is used for pressure sensor institute
The signal of acquisition is amplified, is filtered, and the first A/D converting unit through the first signal conditioning unit treated signal for that will turn
It changes digital signal into and is sent to processing module.
4. according to claim 3 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: pressure generates single
Member includes air pump, and pressure unit includes sphygmomanometer sleeve bag, and air pump is for being pumped into gas into sphygmomanometer sleeve bag, at sphygmomanometer sleeve bag
It is additionally provided with a solenoid valve for gas discharge, air pump and solenoid valve are driven by one first driving unit, the first driving unit
Control signal generated by first processing units.
5. according to claim 4 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: sphygmomanometer sleeve bag
Place is equipped with a splitter, and splitter includes splitter cavity and 1 splitter air inlet pipe being connected to branch cavity, 3 branches
Device escape pipe, the gas outlet access tributary device air inlet pipe of air pump, 3 splitter escape pipes be respectively used to setting solenoid valve,
Pressure sensor and access sphygmomanometer sleeve bag are set.
6. according to claim 1 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: volume pulsation wave
Acquisition module (110) includes that pulse transducer, second signal conditioning unit and the 2nd A/D conversion module, pulse transducer are used for
It acquires the volume pulsation wave of measurement object and is converted into electric signal, second signal conditioning unit is used for after pulse transducer conversion
Electric signal amplify, filter, the 2nd A/D conversion module is for will be through second signal conditioning unit treated analog signal
It is converted into the photoplethysmographic of digital signal form.
7. according to claim 6 be based on numerically controlled blood pressure self-operated measuring unit, it is characterised in that: pulse transducer
Including illuminating module and light receiving unit, illuminating module is used for the measurement point emission measurement light beam to measurement object, light-receiving
Unit the optical signal of reflected light and is converted to electric signal at measurement object for receiving measuring beam；Illuminating module includes feux rouges
Transmitting tube (111) and near infrared emission pipe (112), red emission pipe (111) and near infrared emission pipe (112) are used for one second
Emission measurement light beam is successively distinguished under the driving of driving unit, the second driving unit control signal is generated by the second processing unit；
Light receiving unit includes photoelectric receiving tube (113), and photoelectric receiving tube (113) is used to send out red emission pipe (111) and near-infrared
Penetrate pipe (112) reflected light signal be converted to electric signal after be sent to second signal conditioning unit.
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