CN110192896A - A kind of bimodulus blood flow detecting device - Google Patents
A kind of bimodulus blood flow detecting device Download PDFInfo
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- CN110192896A CN110192896A CN201910276990.4A CN201910276990A CN110192896A CN 110192896 A CN110192896 A CN 110192896A CN 201910276990 A CN201910276990 A CN 201910276990A CN 110192896 A CN110192896 A CN 110192896A
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- 230000017531 blood circulation Effects 0.000 title claims abstract description 125
- 238000001514 detection method Methods 0.000 claims abstract description 63
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 53
- 239000010703 silicon Substances 0.000 claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims abstract description 46
- 238000012545 processing Methods 0.000 claims abstract description 43
- 239000008280 blood Substances 0.000 claims abstract description 15
- 210000004369 blood Anatomy 0.000 claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 91
- 230000003321 amplification Effects 0.000 claims description 68
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 68
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 238000001914 filtration Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 11
- 238000002604 ultrasonography Methods 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
Abstract
The invention discloses a kind of bimodulus blood flow detecting devices, pass through the second ultrasonic signal that blood back reflection is formed by being provided with ultrasonic wave detecting system the first ultrasonic listening signal of transmitting and receiving the first ultrasonic listening signal of processing to obtain the first blood flow data information, then handles second lightwave signal of first lightwave signal by the formation of blood back reflection by being provided with silicon optical detection system the first light wave detectable signal of transmitting and receiving to obtain the second blood flow data information；It solves by the blood flow data information that both the above mode obtains object to be measured and causes device to be easy to appear failure using the device that single mode carries out blood flow detection in the prior art can not to carry out detection work and can not when testing result there is technical issues that large error；Provide bimodulus blood flow detecting device that one kind of multiple modes detect, reliable and stable.
Description
Technical field
The present invention relates to technical field of medical equipment, more particularly, to a kind of bimodulus blood flow detecting device.
Background technique
For the various diseases that the body of people occurs, with the development of science and technology, can be by obtaining people's
Body parameter is to help doctor to carry out medical diagnosis on disease, wherein blood flow parameter can be well reflected the physiological status of human body, and blood flow
Speed is considerable one in each blood flow parameter again.
In the prior art, blood flow detecting device is only by the way of single (only with the mode or silicon of ultrasonic listening
The mode of optical detection) Lai Jinhang blood flow detection, this device only with single detection mode goes out in some component of equipment
When existing malfunction or damage, can not continue to detect work, if moreover, the obtained testing result of single detection mode in the presence of
Biggish error can not also be learnt.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to provide bimodulus blood flow detecting device that one kind of multiple modes detect, reliable and stable.
The technical scheme adopted by the invention is that:
In a first aspect, the present invention provides a kind of bimodulus blood flow detecting device comprising ultrasonic wave detecting system and the inspection of silicon light
Examining system；The ultrasonic wave detecting system is visited for emitting the first ultrasonic listening signal and receiving processing first ultrasonic wave
Second ultrasonic signal of the signal by the formation of blood back reflection is surveyed to obtain the first blood flow data information；Silicon light detection system
System is for emitting the first light wave detectable signal and receiving what processing the first light wave detectable signal was formed by blood back reflection
Second light wave detectable signal is to obtain the second blood flow data information.
Further, the ultrasonic wave detecting system includes:
Supersonic sounding module for emitting the first ultrasonic listening signal, and receives the first ultrasonic listening signal
The the second ultrasonic listening signal formed by blood back reflection；
Blood flow signal shunt module, for received to the supersonic sounding module described respectively using 2 tunnel demodulated signals
Second ultrasonic listening signal carries out branch output processing；
Blood flow flows to processing module；For handling the ultrasonic listening of the blood flow signal shunt module branch output
Output ultrasonic wave detects digital signal after signal；
First main control module obtains first number for receiving and processing the analysis ultrasonic listening digital signal
It is believed that breath.
Further, the supersonic sounding module includes ultrasonic probe, the ultrasonic probe include ultrasonic wave generation circuit,
Ultrasonic wave receives resonance circuit and ultrasonic wave transmitting circuit；The ultrasonic wave receives the output end of resonance circuit and the blood flow is believed
The input terminal connection of number shunt module, the output end of the ultrasound wave generation circuit are defeated with the ultrasonic wave transmitting circuit respectively
Enter the input terminal connection at end, the blood flow signal shunt module.
Further, the blood flow signal shunt module includes the first frequency dividing circuit and the second frequency dividing circuit；The ultrasound
First output end of wave generation circuit is connect with the first input end of first frequency dividing circuit, and the ultrasonic wave receives resonance electricity
The output end on road is connect with the second input terminal of first frequency dividing circuit, the output end and the blood of first frequency dividing circuit
Stream flows to the first input end connection of processing module, the second output terminal of the ultrasound wave generation circuit and the second frequency dividing electricity
The first input end on road connects, and the ultrasonic wave receives the second input of the output end and second frequency dividing circuit of resonance circuit
End connection, the output end of second frequency dividing circuit are connect with the second input terminal that the blood flow flows to processing module.
Further, first frequency dividing circuit includes: second resistance, 3rd resistor, the 4th resistance, the 5th capacitor,
Six capacitors, the second inductance and the second triode；First output of one end of the 4th resistance and the ultrasonic wave generation circuit
End connection, the other end of the 4th resistance are connect with one end of the 6th capacitor, the other end difference of the 6th capacitor
Connect with the base stage of one end of the 3rd resistor, second triode, the emitter of second triode respectively with institute
State the first output end connection of one end, ultrasonic wave reception resonance circuit of the second inductance, the other end of second inductance
Ground connection, the other end of 3rd resistor one end, described with the collector of second triode, the second resistance respectively
One end of 5th capacitor, the blood flow flow to the first input end connection of processing module, the other end of the second resistance and outer
Connect the connection of 2V power supply, the other end ground connection of the 5th capacitor.
Further, second frequency dividing circuit includes: the 5th resistance, the 6th resistance, the 7th resistance, the 7th capacitor,
Eight capacitors, third transistor, third inductance and third phase inverter；The input terminal and the ultrasonic wave of the third phase inverter generate
The second output terminal of circuit connects, and the output end of the third phase inverter is connect with one end of the 7th resistance, and the described 7th
The other end of resistance is connect with one end of the 8th capacitor, the other end of the 8th capacitor respectively with the 6th resistance
One end, the third transistor base stage connection, the emitter of the third transistor respectively with one end of the third inductance,
The ultrasonic wave receives the second output terminal connection of resonance circuit, the other end ground connection of the third inductance, the 6th resistance
The other end respectively with the collector of the third transistor, one end of the 5th resistance, one end of the 7th capacitor, institute
The second input terminal connection that blood flow flows to processing module is stated, the other end of the 5th resistance is connect with external 2V power supply, described
The other end of 7th capacitor is grounded.
Further, it includes the first blood flow flow direction processing submodule and the second blood flow flow direction that the blood flow, which flows to processing module,
Handle submodule；The first blood flow flow direction processing submodule includes the first filter amplification circuit and the first analog to digital conversion circuit,
The output end of first frequency dividing circuit is connect with the input terminal of first filter amplification circuit, the first filter and amplification electricity
The output end on road is connect with the input terminal of first analog to digital conversion circuit, the output end of first analog to digital conversion circuit and institute
State the input terminal connection of the first main control module；Second blood flow flow direction processing submodule includes the second filter amplification circuit and the
Two analog to digital conversion circuits, the output end of second frequency dividing circuit are connect with the input terminal of second filter amplification circuit, institute
The output end for stating the second filter amplification circuit is connect with the input terminal of second analog to digital conversion circuit, second analog-to-digital conversion
The output end of circuit is connect with the input terminal of first main control module.
Further, first filter amplification circuit include the first low-pass filter circuit, the first signal amplification circuit and
First high-pass filtering circuit；The output end of first frequency dividing circuit is connect with the input terminal of first low-pass filter circuit,
The output end of first low-pass filter circuit is connect with the input terminal of first signal amplification circuit, and first signal is put
The output end of big circuit is connected in the input terminal of first high-pass filtering circuit, the output end of first high-pass filtering circuit
It is connect with the input terminal of first analog to digital conversion circuit.
Further, second filter amplification circuit include the second low-pass filter circuit, second signal amplifying circuit and
Second high-pass filtering circuit；The output end of second frequency dividing circuit is connect with the input terminal of second filter circuit, described
The output end of second filter circuit is connect with the input terminal of the second signal amplifying circuit, the second signal amplifying circuit
Output end is connect with the input terminal of second high-pass filtering circuit, the output end of second high-pass filtering circuit and described the
The input terminal of two analog-to-digital conversion modules connects.
Further, the silicon optical detection system includes: silicon optical detector, carrier circuit, ON-OFF control circuit, the second master
Control module, the first filter circuit, first voltage follow circuit and third signal amplification circuit, the output end of the carrier circuit with
The input terminal of the ON-OFF control circuit connects, the control of the output end and the ON-OFF control circuit of second main control module
End connection, the output end of the ON-OFF control circuit are connect with the transmitting terminal of the silicon optical detector for emitting first light
Wave detection signal, the receiving end of the silicon optical detector are connect for receiving described with the input terminal of first filter circuit
The output end of two light wave detectable signals, first filter circuit follows the input terminal of circuit to connect with the first voltage, institute
Stating first voltage follows the output end of circuit and the input terminal of first signal amplification circuit to connect, the third signal amplification
The output end of circuit is connect with the input terminal of second main control module.
Further, the silicon optical detection system further includes the 5th signal amplification circuit, first filter circuit it is defeated
Outlet is connect with the input terminal of the 5th signal amplification circuit, the output end and the switch of the 5th signal amplification circuit
The input terminal of control circuit connects.
Further, the silicon optical detection system further includes that second voltage follows circuit and fourth signal amplifying circuit, institute
The output end for stating third signal amplification circuit follows the input terminal of circuit to connect with the second voltage, and the second voltage follows
The output end of circuit is connect with the input terminal of the fourth signal amplifying circuit, the output end of the fourth signal amplifying circuit with
The input terminal of second main control module connects.
Further, the silicon optical detection system further includes the second filter circuit, the fourth signal amplifying circuit it is defeated
Outlet is connect with the input terminal of second filter circuit, the output end of second filter circuit and second main control module
Input terminal connection.
The beneficial effects of the present invention are:
The present invention the first is surpassed by being provided with ultrasonic wave detecting system the first ultrasonic listening signal of transmitting and receiving processing
Second ultrasonic signal of the acoustic detection signal by the formation of blood back reflection is to obtain the first blood flow data information, then passes through and set
It is equipped with silicon optical detection system the first light wave detectable signal of transmitting and receives the first lightwave signal of processing and formed by blood back reflection
The second lightwave signal to obtain the second blood flow data information；It obtains the blood flow data of object to be measured by both the above mode
Information solve cause device to be easy to appear failure using the device that single mode carries out blood flow detection in the prior art can not be into
Row detects work and can not when testing result there is technical issues that large error；One kind of multiple modes are provided to detect
, reliable and stable bimodulus blood flow detecting device.
Detailed description of the invention
Fig. 1 is an a kind of specific embodiment module frame chart of bimodulus blood flow detecting device of the present invention；
Fig. 2 is a specific embodiment module frame of ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
Figure；
Fig. 3 is the ultrasonic wave of supersonic sounding module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
One specific embodiment circuit diagram of generation circuit；
Fig. 4 is the ultrasonic wave of supersonic sounding module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
One specific embodiment circuit diagram of transmit circuit；
Fig. 5 is the ultrasonic wave of supersonic sounding module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
Receive a specific embodiment circuit diagram of resonance circuit；
Fig. 6 be in a kind of bimodulus blood flow detecting device of the present invention in ultrasonic wave detecting system blood flow signal shunt module the
One specific embodiment circuit diagram of one frequency dividing circuit；
Fig. 7 be in a kind of bimodulus blood flow detecting device of the present invention in ultrasonic wave detecting system blood flow signal shunt module the
One specific embodiment circuit diagram of frequency-halving circuit；
Fig. 8 is that blood flow flows to the of processing module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
One specific embodiment circuit diagram of one filter amplification circuit and the second filter amplification circuit；
Fig. 9 is that blood flow flows to the of processing module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
One specific embodiment circuit diagram of one analog to digital conversion circuit；
Figure 10 is signal flow output module in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
One specific embodiment circuit diagram of the second analog to digital conversion circuit；
Figure 11 is the one of middle main control module specific in ultrasonic wave detecting system in a kind of bimodulus blood flow detecting device of the present invention
Embodiment circuit diagram.
Figure 12 is a specific embodiment module frame chart of silicon optical detection system in a kind of bimodulus blood flow detecting device of the present invention；
Figure 13 is that carrier circuit, switch control are electric in silicon light wave detection system in a kind of bimodulus blood flow detecting device of the present invention
Road, the first filter circuit, first voltage follow a specific implementation of circuit, the 5th signal amplification circuit and detector identification circuit
Example circuit diagram.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As shown in Figure 1, a kind of bimodulus blood flow detecting device of the present invention comprising ultrasonic wave detecting system and silicon light detection system
System；Wherein, ultrasonic wave detecting system launches the first ultrasonic listening signal and receives processing the first ultrasonic listening signal warp
The second ultrasonic signal of blood back reflection formation is crossed to obtain the first blood flow data information, silicon optical detection system launches first
Light wave detectable signal simultaneously receives second light wave detectable signal of the first light wave of processing detection by the formation of blood back reflection to obtain
Second blood flow data information；Blood flow detection is carried out by ultrasonic listening and silicon optical detection two ways to solve in the prior art
Detection work can not be carried out and when detection knot by causing device to be easy to appear failure using the device that single mode carries out blood flow detection
Fruit can not when there is technical issues that large error.
Specifically, being illustrated below by way of specific embodiment to ultrasonic wave detecting system:
As shown in Fig. 2, in the present embodiment ultrasonic wave detecting system include supersonic sounding module, blood flow signal shunt module,
Blood flow flows to processing module and the first main control module；It emits the first ultrasonic listening signal by being provided with supersonic sounding module
And it receives the second ultrasonic listening signal for feeding back to be transmitted to blood flow signal shunt module right respectively using 2 tunnel demodulated signals
It is input to blood flow after received second ultrasonic listening signal progress branch reception and flows to processing module progress signal processing, blood flow
It flows to output ultrasonic wave after processing module is handled received second ultrasonic listening signal and detects digital signal to first
Main control module, the first main control module receive and process ultrasonic listening digital signal and obtain the first blood flow data information.
In the present embodiment, supersonic sounding module is ultrasonic probe comprising ultrasonic wave generation circuit, ultrasonic wave receive resonance
Circuit and ultrasonic wave transmitting circuit, blood flow signal shunt module include the first frequency dividing circuit and the second frequency dividing circuit.Specifically,
Referring to Fig. 3, ultrasonic wave generation circuit includes 8MHz without source crystal oscillator Y1, the 9th resistance R9 to twelfth resistor R12, the 5th inductance
L5, the 11st capacitor R11, the 12nd capacitor C12, the first phase inverter U1 and the second phase inverter U2；Wherein twelfth resistor R12 is
Slide rheostat, X1 end of the 8MHz without source crystal oscillator Y1 respectively with one end of the 9th resistance R9, one end of the 12nd capacitor C12,
The input terminal of one phase inverter U1 connects, X2 end of the 8MHz without source crystal oscillator Y1 respectively with the output end of the first phase inverter U1, the
One end connection of the input terminal of two phase inverter U2, the other end of the 9th resistance R9, the 11st capacitor C11, the 11st capacitor C11's
The other end connect with the other end of the 12nd capacitor C12 after altogether, the output end of the second phase inverter U2 is ultrasonic wave generation circuit
The first output end, the output end of the second phase inverter U2 respectively with the input terminal of ultrasonic wave transmitting circuit, the first frequency dividing circuit
One end connection of first input end, the tenth resistance R10, the other end of the tenth resistance R10 are connect with one end of the 5th inductance L5, the
The other end second output terminal of wave generation circuit (i.e. ultrasonic) of five inductance L5 respectively with one end of eleventh resistor R11, the tenth
The first fixing end of two resistance R12 connects, and the other end of eleventh resistor R11 is connect with external 2V power supply, twelfth resistor R12
Sliding end, the 20th resistance R12 the second fixing end connection after altogether；It is defeated by the first output end of ultrasonic echography circuit
The 8.1MHZ signal of 8MHZ signal and second output terminal output out is actually the signal phase of second output terminal than first
The signal amplitude frequency of 90 degree of the phase lag signal of output end, practical two output ends is consistent, and 8.1MHZ is in order to distinguish two
The mark that the signal of a output end is made there are the difference of phase, by 90 degree of phase phase difference of 2 tunnel demodulated signals for the
One frequency dividing circuit and the second frequency dividing circuit carry out the reception of signal；Meanwhile it supplying ultrasonic wave transmitting circuit and launching outward ultrasonic wave
Detectable signal.Referring to Fig. 4, ultrasonic wave transmitting circuit includes the 9th capacitor C9, the tenth capacitor C10, the 8th resistance R8, the 4th inductance
L4, the 4th triode Q4 and emitting ceramic chip；Wherein, the both ends of emitting ceramic chip are connect with the interface of J1 and J2 respectively,
One end (input terminal of i.e. ultrasonic wave transmitting circuit) of 9th capacitor C9 is connect, the 9th capacitor with the output end of the second phase inverter U2
The other end of C9 is connect with one end of the base stage of the 4th triode Q4, the 8th resistance R8 respectively, the other end point of the 8th resistance R8
External 2V power supply is accessed after not connecting with one end of one end of the tenth capacitor C10, the 4th inductance L4, the tenth capacitor C10's is another
End is connect with the other end, the J1 interface of the collector of the 4th triode Q4, the 4th inductance L4 respectively, the transmitting of the 4th triode Q4
Pole connect with J2 interface after altogether, by passing through emitting ceramic again after receiving the 8MHz signal source that ultrasonic wave generation circuit generates
Chip emits the first ultrasonic listening signal outward.Referring to Fig. 5, ultrasonic wave receive resonance circuit include receive ceramic wafers,
First resonance transformer T1, the first amplifier tube Q1, first capacitor C1 to the 4th capacitor C4, first resistor R1, the first inductance L1,
One output terminals A S1 and second output terminal AS2；Wherein, the first amplifier tube Q1 is the first triode Q1, receives the both ends of ceramic wafers
It is connect respectively with the interface of J9A and J10A, the first input end of the first resonance transformer T1 is connect with J9A interface, the first resonance
The second input terminal of transformer T1 is connect with J10A interface, the first output end of the first resonance transformer T1 respectively with the 4th capacitor
One end of C4, the first triode Q1 base stage connection, the second output terminal of the first resonance transformer T1 respectively with the 4th capacitor C4
The other end, the first triode Q1 emitter connection after altogether, the collector of the first triode Q1 respectively with the first inductance L1
One end, one end of first resistor R1, one end of first capacitor C1, the second capacitor C2 one end connection, the first inductance L1's is another
External 2V power supply, third capacitor C3 are accessed in one end after connecting respectively with one end of the other end of first resistor R1, third capacitor C3
The other end ground connection, the other end of first capacitor C1 connect with the first output terminals A S1 after access blood flow signal shunt module, second
The other end of capacitor C2 accesses blood flow signal shunt module after connecting with second output terminal AS2, is connect by receiving ceramic wafers
The the second ultrasonic listening signal fed back is received after the first triode Q1 amplification by the first output terminals A S1, second output terminal
AS2 is exported to blood flow signal shunt module.
Referring to Fig. 6, in the present embodiment, the first frequency dividing circuit include second resistance R2 to the 4th resistance R4, the 5th capacitor C5,
6th capacitor C6, the second inductance L2 and the second triode Q2；Wherein, one end (i.e. of the first frequency dividing circuit of the 4th resistance R4
One input terminal) it is connect with the output end of the second phase inverter U2 in ultrasonic wave generation circuit, the other end of the 4th resistance R4 and the
One end of six capacitor C6 connects, the other end of the 6th capacitor C6 base with one end of 3rd resistor R3, the second triode Q2 respectively
Pole connection, the emitter (i.e. the second input terminal of the first frequency dividing circuit) of the second triode Q2 respectively with the second inductance L2 one
End, ultrasonic wave receive the first output terminals A S1 connection of resonance circuit, and the other end of the second inductance L2 is grounded, 3rd resistor R3's
The other end is respectively and at the collector of the second triode Q2, one end of second resistance R2, one end of the 5th capacitor C5, blood flow flow direction
The first input end connection of module is managed, the other end of second resistance R2 is connect with external 2V power supply, the other end of the 5th capacitor C5
Ground connection, by the first output end for receiving 8MHz signal source and ultrasonic wave reception resonance circuit that ultrasonic wave generation circuit generates
Output to blood flow flows to processing module after the signal that AS1 is transmitted.Referring to Fig. 7, the second frequency dividing circuit includes the 5th resistance R5 to the
Seven resistance R7, the 7th capacitor C7, the 8th capacitor C8, third transistor Q3, third inductance L3 and third phase inverter U3；Wherein,
The input terminal of three phase inverter U3 is connect with the output end of the second phase inverter U2 in ultrasonic wave generation circuit, third phase inverter U3's
Output end is connect with one end of the 7th resistance R7, and the other end of the 7th resistance R7 is connect with one end of the 8th capacitor C8, the 8th electricity
The other end for holding C8 is connect with the base stage of one end of the 6th resistance R6, third transistor Q3 respectively, the transmitting of third transistor Q3
The second output terminal AS2 that pole receives resonance circuit with one end of third inductance L3, ultrasonic wave respectively is connect, and third inductance L3's is another
One end ground connection, the other end of the 6th resistance R6 respectively with the collector of third transistor Q3, one end of the 5th resistance R5, the 7th electricity
One end of appearance C7, blood flow flow to the second input terminal connection of processing module, and the other end of the 5th resistance R5 and external 2V power supply connect
It connects, the other end of the 7th capacitor C7 ground connection, by receiving 8MHz signal source that ultrasonic wave generation circuit generates and being accessed the
After the signal that three phase inverter U3 and the second output terminal AS2 for receiving ultrasonic wave reception resonance circuit are transmitted at output to blood flow flow direction
Manage module.
In the present embodiment, it includes at the first blood flow flow direction processing submodule and the second blood flow flow direction that blood flow, which flows to processing module,
Manage submodule；Wherein, the first blood flow flow direction processing submodule includes the first filter amplification circuit and the first analog to digital conversion circuit, the
Two blood flows flow direction processing submodule includes the second filter amplification circuit and the second analog to digital conversion circuit, the first filter amplification circuit packet
Include the first low-pass filter circuit, the first signal amplification circuit and the first high-pass filtering circuit, the second filter amplification circuit includes the
Two low-pass filter circuits, second signal amplifying circuit and the second high-pass filtering circuit.Specifically, referring to Fig. 8, the first low-pass filtering
Circuit includes: the 13rd capacitor C13 to the 17th capacitor C17, thirteenth resistor R13 to the 16th resistance R16, the 5th triode
Q5 and the first filtered switch chip U4；First signal amplification circuit includes: the 17th resistance R17 to the 19th resistance R19 and
One operational amplifier U5；First high-pass filtering circuit includes: the 18th capacitor C18, the 19th capacitor C19, the 20th resistance R20
To the 22nd resistance R22 and second operational amplifier U6；Second low-pass filter circuit includes: the 20th capacitor C20 to second
14 capacitor C24, the 23rd resistance R23 to the 25th resistance R25 and the second filtered switch chip U7；Second signal amplification
Circuit includes: the 26th resistance R26 to the 28th resistance R28 and third operational amplifier U8；Second high-pass filtering circuit
It include: the 20th capacitor C25, the 26th capacitor C26, the 29th resistance R29 to the 31st resistance R31 and the 4th operation
Amplifier U9；Wherein, the first filtered switch chip U4 and the second filtered switch chip U7 is TC4W66F chip, the first operation
Amplifier U5 to four-operational amplifier U9 is TL064 operational amplifier, and the tenth resistance R10 and the 20th resistance R20 are
Slide rheostat；One end (i.e. the input terminal of the first filter amplification circuit) of 13rd capacitor C13 is defeated with the first frequency dividing circuit
Outlet SI1 connection, for the second ultrasonic listening signal that the transmitting of received ultrasonic signal detection probe comes, the 13rd capacitor
The other end of C13 is connect with the first fixing end of the tenth resistance R10, the second fixing end ground connection of the tenth resistance R10, the tenth resistance
The sliding end of R10 respectively with one end of eleventh resistor R11, one end of the 14th capacitor C14, the first filtered switch chip U4
Input terminal connection, eleventh resistor R11 the other end ground connection, the other end of the 14th capacitor C14 respectively with twelfth resistor R12
One end, the 15th capacitor C15 one end connection, the other end of the 15th capacitor C15 respectively with the 16th capacitor C16 one
One end connection at end, one end of the 17th capacitor C17, the normal phase input end of the first operational amplifier U5, the 14th resistance R14,
The other end of 16th capacitor C16 is connect with the output end of the first filtered switch chip U4, another termination of the 14th resistance R14
Ground, the other end of twelfth resistor R12 are defeated with the reverse phase of the other end of the 17th capacitor C17, the first operational amplifier U5 respectively
Entering one end connection at end, one end of the 15th resistance R15, the 16th resistance R16, the other end of the 15th resistance R15 is grounded, the
The other end of 16 resistance R16 is connect with one end of the output end of the first operational amplifier U5, the 18th capacitor C18 respectively, the
The other end of 18 capacitor C18 connects with the normal phase input end of one end of the 17th resistance R17, second operational amplifier U6 respectively
Connect, the other end of the 17th resistance R17 connect with one end of the 18th resistance R18 after altogether, the other end of the 18th resistance R18
Connect respectively with one end of the inverting input terminal of second operational amplifier U6, one end of the 19th capacitor C19, the 19th resistance R19
It connects, the other end of the 19th resistance R19 output end with the other end of the 19th capacitor C19, second operational amplifier U6 respectively
Connection.Wherein, the enable end IN2 of the first filtered switch chip respectively with one end of thirteenth resistor R13, the 5th triode Q5
Emitter connection, the base stage of the 5th triode Q5 are connect with the first main control module, the collector and external 5V of the 5th triode Q5
Power supply connection, the other end of thirteenth resistor R13 are connect with external -4.6V power supply, the first operational amplifier U5 and the second operation
The positive supply input terminal of amplifier U6 accesses 5V power supply, negative supply input terminal access -4.6V power supply.Second filter and amplification electricity
The circuit structure on road is substantially consistent with the circuit structure of the first filter amplification circuit, as shown in fig. 7, but it should be noted that second
The enable end of filtered switch chip U7 passes through the 5th triode Q5 after can connecting with the enable end of the first filtered switch chip U4 again
It is connect with the first main control module；By the first filter amplification circuit of setting and the second filter amplification circuit, by the first frequency dividing circuit
The signal transmitted with the second frequency dividing circuit exports after being filtered amplification, ensure that effective, the reliability of follow-up signal processing.
As shown in Figure 9 and Figure 10, in the present embodiment, the first analog-to-digital conversion module and the second analog-to-digital conversion module are used respectively
Ultrasonic listening is converted into the 2 tunnel ultrasonic listening signals for exporting the first filter amplification circuit and the second filter amplification circuit
It is exported after digital signal；Specifically, the first analog-to-digital conversion module includes the 27th capacitor C27, the 28th electricity referring to Fig. 9
Hold C28, the 32nd resistance R32 to the 38th resistance R38, first diode D1, the second diode D2, first comparator
U10 and the first modulus conversion chip U11；Wherein, first comparator U10 is LM393 comparator, the first modulus conversion chip U11
For 74HC74 chip, one end of the 27th capacitor C27 and the output end of the first filter amplification circuit are (referring to Fig. 7, i.e., the second fortune
Calculate amplifier output end U6) A1B connection, the other end of the 27th capacitor C27 respectively with the 32nd resistance R32 one
One end connection at end, the 33rd resistance R33, the other end ground connection of the 32nd resistance R32, the 33rd resistance R33's is another
One end connects with the inverting input terminal of the anode of first diode D1, the cathode of the second diode D2, first comparator U10 respectively
Connect, the cathode of first diode D1 connect with the anode of the second diode D2 after altogether, one end of the 34th resistance R34 and outer
Connect -4.6V power supply connection, the other end of the 34th resistance R34 respectively with one end of the 35th resistance R35, the 28th electricity
Hold the non-inverting input terminal connection of one end of C28, one end of the 36th resistance R36, first comparator U10, the 35th resistance
The other end of R35 is grounded, and the other end of the 28th capacitor C28 is respectively compared with the other end of the 36th resistance R36, first
The output end of device U10, one end of the 37th resistance R37, one end of the 38th resistance R38, the second modulus conversion chip U13
Data input pin D (referring to Fig.1 0), the first modulus conversion chip U11 reset terminalConnection, the 37th resistance R37's
The other end is connect with external 5V power supply, the clock signal of the other end of the 38th resistance R38 and the first modulus conversion chip U11
Input terminal CLK connection, the Q output of the first modulus conversion chip U11 are connect with the first main control module；Referring to Fig.1 0, the second mould
Number conversion modules include the 29th capacitor C29, the 30th capacitor C30, the 39th resistance R39 to the 46th resistance R46,
Third diode D3, the 4th diode D4, the second comparator U12 and the second modulus conversion chip U13；Wherein, wherein the second ratio
Compared with device U12 be LM393 comparator, the second modulus conversion chip U13 be 74HC74 chip, one end of the 29th capacitor C29 with
Output end (referring to Fig. 8, the i.e. output end of four-operational amplifier U9) A2B connection of second filter amplification circuit, the 29th
The other end of capacitor C29 is connect with one end of one end of the 39th resistance R39, the 40th resistance R40 respectively, the 39th electricity
Hinder R39 the other end ground connection, the other end of the 40th resistance R40 respectively with the anode of third diode D3, the 4th diode D4
Cathode, the second comparator U12 inverting input terminal connection, the anode company of the cathode of third diode D3 and the 4th diode D4
After connecing altogether, one end of the 41st resistance R41 is connect with external -4.6V power supply, the other end difference of the 41st resistance R41
With one end, one end of the 43rd resistance R43, the second comparator of one end of the 42nd resistance R42, the 30th capacitor C30
The non-inverting input terminal of U12 connects, the other end ground connection of the 42nd resistance R42, and the other end of the 30th capacitor C30 is respectively with the
The other end of 43 resistance R43, the output end of the second comparator U12, one end of the 44th resistance R44, the 45th electricity
One end connection of R45 is hindered, the other end of the 44th resistance R44 is connect with external 5V power supply, and the 45th resistance R45's is another
End respectively with the data input pin D of the first modulus conversion chip U11 (referring to Fig. 9), one end of the 46th resistance R46, second
The reset terminal of modulus conversion chip U13Connection, the other end of the 46th resistance R46 and the second modulus conversion chip U13
Clock signal input terminal CLK connection, the Q output of the second modulus conversion chip U13 connect with the first main control module.Wherein,
The positive supply input terminal of first comparator U10 and the second comparator U12 are connect with external 5V power supply, negative supply input terminal difference
Ground connection.It is provided with the A2B ultrasonic listening signal that the first analog-to-digital conversion module exports the second filter amplification circuit and carries out waveform
To the first main control module, the second analog-to-digital conversion module exports the first filter amplification circuit for output after shaping and analog-to-digital conversion
A1B ultrasonic listening signal exports after carrying out waveform shaping and analog-to-digital conversion to the first main control module.As shown in figure 11, first is main
Controlling module U14 includes STM32F103R8T6 chip, and the connection relationship of pin is as shown, according to the first signal flow is received
Output sub-module transmits the blood flow signal come backward and second signal flows to the forward blood flow letter that output sub-module transmitting comes
Number to obtain the first blood flow data information.
Silicon optical detection system is illustrated below by way of specific embodiment:
It is a specific embodiment of silicon optical detection system in a kind of bimodulus blood flow detecting device of the present invention with reference to Figure 12, Figure 12
Structural block diagram, silicon optical detection system include silicon optical detector, carrier circuit, ON-OFF control circuit, the second main control module, the first filter
Wave circuit, first voltage follow circuit, third signal amplification circuit, second voltage to follow circuit, fourth signal amplifying circuit,
Two filter circuits, the 5th signal amplification circuit and detector identification circuit, the output end of carrier circuit and ON-OFF control circuit
Input terminal connection, the output end of the second main control module and the control terminal of ON-OFF control circuit are connected with control switch control circuit
On-off, whether further controlling the work of the transmitting terminal of silicon optical detector, the output end and silicon optical detector of ON-OFF control circuit
Transmitting terminal connect for emitting the first light wave detectable signal, the receiving end of silicon optical detector is defeated with the first filter circuit
Enter end connection, the output end of the first filter circuit follows the input terminal of circuit to connect for receiving second light with first voltage
Wave detection signal, first voltage follow the output end of circuit and the input terminal of third signal amplification circuit to connect；Third signal is put
The output end of big circuit follows the input terminal of circuit to connect with second voltage, and second voltage follows the output end and the 4th letter of circuit
The input terminal connection of number amplifying circuit；The output end of fourth signal amplifying circuit is connect with the input terminal of the second filter circuit, the
The output end of two filter circuits is connect with the input terminal of the second main control module, and the output end of the first filter circuit is put with the 5th signal
The input terminal connection of big circuit, the output end of the 5th signal amplification circuit and the input terminal of ON-OFF control circuit are connected to enhance pair
The driving capability of ON-OFF control circuit；Silicon optical detector is connect with the input terminal of detector identification circuit, detector identification circuit
Output end connect with the input terminal of the second main control module, whether silicon optical detector connects detector identification circuit for identification
Enter.
By the second main control module of setting and ON-OFF control circuit to control the work of the transmitting terminal of silicon optical detector, second
Main control module can with the control terminal of input control signal to ON-OFF control circuit with the conducting of control switch control circuit whether, into
And whether controlling the work of the transmitting terminal of silicon optical detector；And carrier circuit, the first filter circuit, first voltage is cooperated to follow electricity
Road and third signal amplification circuit obtain blood flow velocity and detect signal, further realize blood flow velocity detection；Detection system structure
Simply, and only the transmitting of detection signal need to be realized using silicon optical detector and is received, then received signal is handled
Realize blood flow velocity detection, the requirement to detection operation is low, and it is practical, detection efficiency can be effectively improved, the prior art is overcome
The technical problem that the requirement of middle ultrasonic doppler blood flow speed detection technology is high and detection efficiency is low, specifically, silicon light detection
The blood flow velocity detection pattern of system can be PPG mode, by handling available the second blood by personnel to be measured of PPG signal
Streaming data information.In addition, also following circuit, fourth signal amplifying circuit and the second filter circuit into one by the way that second voltage is arranged
Step amplification blood flow velocity detects signal, improves signal strength to improve the precision of blood flow velocity detection.Finally, also setting up detector
To identify whether silicon optical detector has access, the second main control module can be set into when the access of silicon optical detector just identification circuit
It starts to work, the energy consumption of detection system can be saved in this way, extend the up time of detection system.
Further, the second main control module includes the processors such as single-chip microcontroller, is carrier wave electricity of the invention with reference to Figure 13, Figure 13
Road, ON-OFF control circuit, the first filter circuit, first voltage follow circuit, the 5th signal amplification circuit and detector identification electricity
The one specific embodiment circuit diagram on road, carrier circuit 1 include LMC555 timer chip U18, and carrier circuit 1 generates square wave letter
Number be used as carrier wave.And ON-OFF control circuit 2 includes first switch tube Q20, second switch Q19, third switching tube Q21 and the 5th
Operational amplifier U21A, the 5th operational amplifier U21A use the operational amplifier all the way of LMC64821 chip, LMC64821 core
Piece is a kind of two-way cmos operational amplifier, the output end PPG_EN of the control terminal of first switch tube Q20 and the second main control module
(enable end) connection, the negative output terminal of first switch tube Q20 are connect with the non-inverting input terminal of the 5th operational amplifier U21A, and first
The positive output end of switching tube Q20 is connect with power supply+5ANA, and the output end of carrier circuit 1 and the control terminal of second switch Q19 connect
(i.e. the output end of chip U18 is connect after resistance R86 with the control terminal of second switch Q19) is connect, second switch Q19's
Negative output terminal is connect with power supply+5ANA, the homophase input of the positive output end of second switch Q19 and the 5th operational amplifier U21A
The inverting input terminal of end connection, the 5th operational amplifier U21A is connect by resistance R88 with power supply+5ANA, the 5th operation amplifier
The output end of device U21A is connect with the control terminal of third switching tube Q21, and the negative output terminal of third switching tube Q21 passes through resistance R88
It is connect with power supply+5ANA, the positive output end of third switching tube Q21 is connect with the transmitting terminal PPG_V1 of silicon optical detector.Switch control
The control signal PPG_EN that circuit 2 processed is inputted according to the second main control module controls whether conducting third switching tube Q21, and then controls
Whether the transmitting terminal of silicon optical detector works.Wherein, first switch tube Q20 is NPN triode, and the base stage of NPN triode is the
The control terminal of one switching tube Q20, the transmitting extremely negative output terminal of first switch tube Q20 of NPN triode, the collection of NPN triode
Electrode is the positive output end of first switch tube Q20.In addition, second switch Q19 and third switching tube Q21 are PNP triode,
The base stage of PNP triode is the control terminal of second switch Q19 and third switching tube Q21, the transmitting of PNP triode extremely second
The negative output terminal of switching tube Q19 and third switching tube Q21, the current collection of PNP triode extremely second switch Q19 and third switch
The positive output end of pipe Q21.
Further, with reference to Figure 13, the first filter circuit 5 is amplifier filter circuit, specifically, amplifier filter circuit packet
The 7th operational amplifier U27, resistance R109 and capacitor C115 are included, U27 uses AD8627 high-voltage amplifier chip, the reverse phase of U27
Input terminal is connect with the receiving end PPG_V2 of silicon optical detector, and the first filter circuit 5 is an active high-pass filtering circuit, is used for
Filtering interference signals, to improve the precision of blood flow velocity testing result.In addition, it includes the 8th operation that first voltage, which follows circuit 6,
Amplifier U23C, U23C use the operational amplifier of LMC6036 model, realize that output voltage follows input voltage to change；First
The output terminals A of voltage follower circuit 6 is connect with the input terminal of third signal amplification circuit.Similarly, second voltage follow circuit with
First voltage follows circuit structure identical, repeats no more.Furthermore third signal amplification circuit includes the operation of LMC6036 model
Amplifier, to amplify the signal of input, similarly, the operation amplifier all the way of LMC64821 chip is can be used in fourth signal amplifying circuit
Device come realize signal amplify.
Further, with reference to Figure 12 and Figure 13, the 5th signal amplification circuit includes the 6th operational amplifier U23A and integral
The output end of circuit, the first filter circuit 5 is connect with the inverting input terminal of the 6th operational amplifier U23A, the 6th operational amplifier
The non-inverting input terminal of U23A is connect with reference level P_V_GND, the output end of the 6th operational amplifier U23A and integrating circuit
Input terminal connection, the output end of integrating circuit are connect with the non-inverting input terminal of the 5th operational amplifier U21A.Wherein, integrating circuit
Including the 5th operational amplifier U21B and capacitor CX5, the output end of the 6th operational amplifier U23A passes through resistance R106 and the 5th
The inverting input terminal of operational amplifier U21B connects, and the 6th operational amplifier U23A uses the operational amplifier of LMC6036 model,
5th operational amplifier U21B is realized using the operational amplifier all the way of LMC64821 chip；In addition, the 6th operational amplifier
The reference level P_V_GND of U23A is mentioned by the 7th operational amplifier U27 by capacitor C119 and resistance R119 as virtually
For voltage is about 2.5v.5th signal amplification circuit is by amplifying the signal of the receiving end of silicon optical detector and feeding back to switch
Control circuit 2 enhances the transmitting signal strength of silicon optical detector to improve the driving capability to third switching tube Q21.
Finally, detector identification circuit 4 includes prober interface J21, the 47th resistance R105 and the 4th with reference to Figure 13
A termination power+5ANA of 18 resistance R108, the 47th resistance R105, the other end and the 4th of the 47th resistance R105
One end of 18 resistance R108 connects, the other end of the 48th resistance R108 and the input terminal PPG_ of the second main control module
PROBE connection, the other end of the 47th resistance R105 are connect with the first pin of prober interface J21, prober interface J21
Second pin ground connection, after silicon optical detector is inserted into prober interface J21, the first pin is connected with second pin with by first
Pin ground connection, further drags down the incoming level of input terminal PPG_PROBE.When silicon optical detector does not access circuit, input
The level for holding PPG_PROBE is height, when the access of silicon optical detector, the signal of input terminal PPG_PROBE is dragged down, the second master control
Module passes through the level height for judging input terminal PPG_PROBE to judge whether silicon optical detector accesses circuit, when access silicon light
When detector, control detection system is started to work, and energy consumption can be effectively saved, and extend detection system can operating time.With reference to figure
2, in the present embodiment, the other end of the 47th resistance R105 is connect with the first pin 5 of prober interface J21, and detector connects
The second pin 1 of mouth J21 is grounded, and the third pin 6 of prober interface J21 is connect with second pin 1, and the insertion of silicon optical detector is visited
After surveying device interface J21, by third pin 6 and the connection conducting of the first pin 5 the first pin 5 to be grounded.
In conclusion blood flow data information is as important reference feature, relationship when carrying out medical diagnosis on disease or treatment
To diagnosis or treatment go on smoothly, blood flow detection is carried out by ultrasound examination and silicon light detection two ways, by two kinds
The testing result of mode compares, and when the result of two ways detection is consistent or almost the same, can illustrate the result of detection
It is accurate；When there is large error in the testing result of two ways, it may be possible to which wherein the detection device of certain mode occurs
Failure is interfered, it is also possible to and there is failure or is interfered in the detection device of two kinds of detection modes, thus
Lead to error occurred.At this time, it may be necessary to repeat to detect or the bimodulus blood flow detecting device that otherwise or more renews into
Row detects again, to further determine that the result of detection.The blood flow data information of object to be measured is obtained by both the above mode
Solve causes device to be easy to appear failure using the device that single mode carries out blood flow detection in the prior art to be examined
Survey work and can not when testing result there is technical issues that large error；Provide it is that one kind of multiple modes detect,
Reliable and stable bimodulus blood flow detecting device.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (13)
1. a kind of bimodulus blood flow detecting device, which is characterized in that including ultrasonic wave detecting system and silicon optical detection system；It is described super
Acoustic wave sensing system is for emitting the first ultrasonic listening signal and receiving processing the first ultrasonic listening signal by blood
The second ultrasonic signal that liquid back reflection is formed is to obtain the first blood flow data information；The silicon optical detection system is for emitting the
One light wave detectable signal simultaneously receives the second light wave detection for handling the first light wave detectable signal by the formation of blood back reflection
Signal is to obtain the second blood flow data information.
2. bimodulus blood flow detecting device according to claim 1, which is characterized in that the ultrasonic wave detecting system includes:
Supersonic sounding module for emitting the first ultrasonic listening signal, and receives the first ultrasonic listening signal and passes through
The second ultrasonic listening signal that blood back reflection is formed；
Blood flow signal shunt module, for utilizing 2 tunnel demodulated signals respectively received to the supersonic sounding module described second
Ultrasonic listening signal carries out branch output processing；
Blood flow flows to processing module；For handling the ultrasonic listening signal of the blood flow signal shunt module branch output
Output ultrasonic wave detects digital signal afterwards；
First main control module obtains the first data letter for receiving and processing the analysis ultrasonic listening digital signal
Breath.
3. bimodulus blood flow detecting device according to claim 2, which is characterized in that the supersonic sounding module includes ultrasound
Probe, the ultrasonic probe include ultrasonic wave generation circuit, ultrasonic wave reception resonance circuit and ultrasonic wave transmitting circuit；It is described super
The output end of acoustic receiver resonance circuit is connect with the input terminal of the blood flow signal shunt module, the ultrasound wave generation circuit
Output end connect respectively with the input terminal of the input terminal of the ultrasonic wave transmitting circuit, the blood flow signal shunt module.
4. the ultrasonic sensor according to claim 3 with blood flow flow detection function, which is characterized in that the blood
Flowing signal shunt module includes the first frequency dividing circuit and the second frequency dividing circuit；It is described ultrasound wave generation circuit the first output end with
The first input end of first frequency dividing circuit connects, and the ultrasonic wave receives the output end and first frequency dividing of resonance circuit
Second input terminal of circuit connects, and the output end and the blood flow of first frequency dividing circuit flow to the first input of processing module
The second output terminal of end connection, the ultrasound wave generation circuit is connect with the first input end of second frequency dividing circuit, described
The output end that ultrasonic wave receives resonance circuit is connect with the second input terminal of second frequency dividing circuit, second frequency dividing circuit
Output end connect with the second input terminal that the blood flow flows to processing module.
5. bimodulus blood flow detecting device according to claim 4, which is characterized in that first frequency dividing circuit includes:
Two resistance, 3rd resistor, the 4th resistance, the 5th capacitor, the 6th capacitor, the second inductance and the second triode；4th resistance
One end connect with the first output end of the ultrasonic wave generation circuit, the other end and the 6th capacitor of the 4th resistance
One end connection, the other end of the 6th capacitor base stage with one end of the 3rd resistor, second triode respectively
Connection, the emitter of second triode receive resonance circuit with one end of second inductance, the ultrasonic wave respectively
The connection of first output end, the other end ground connection of second inductance, the other end of the 3rd resistor is respectively with the described 2nd 3
The collector of pole pipe, one end of the second resistance, one end of the 5th capacitor, the blood flow flow to the first of processing module
Input terminal connection, the other end of the second resistance are connect with external 2V power supply, the other end ground connection of the 5th capacitor.
6. bimodulus blood flow detecting device according to claim 4 or 5, which is characterized in that second frequency dividing circuit includes:
5th resistance, the 6th resistance, the 7th resistance, the 7th capacitor, the 8th capacitor, third transistor, third inductance and third phase inverter；
The input terminal of the third phase inverter is connect with the second output terminal of the ultrasonic wave generation circuit, the third phase inverter it is defeated
Outlet is connect with one end of the 7th resistance, and the other end of the 7th resistance is connect with one end of the 8th capacitor, institute
The other end for stating the 8th capacitor is connect with the base stage of one end of the 6th resistance, the third transistor respectively, the third
The second output terminal that the emitter of triode receives resonance circuit with one end of the third inductance, the ultrasonic wave respectively connects
Connect, the other end of third inductance ground connection, the other end of the 6th resistance respectively with the collector of the third transistor,
One end of 5th resistance, one end of the 7th capacitor, the blood flow flow to the second input terminal connection of processing module, institute
The other end for stating the 5th resistance is connect with external 2V power supply, the other end ground connection of the 7th capacitor.
7. bimodulus blood flow detecting device according to claim 4, which is characterized in that the blood flow flows to processing module and includes
First blood flow flow direction processing submodule and the second blood flow flow direction processing submodule；The first blood flow flow direction handles submodule and includes
First filter amplification circuit and the first analog to digital conversion circuit, the output end of first frequency dividing circuit and first filter and amplification
The input terminal of circuit connects, and the input terminal of the output end of first filter amplification circuit and first analog to digital conversion circuit connects
It connects, the output end of first analog to digital conversion circuit is connect with the input terminal of first main control module；The second blood flow stream
To processing submodule include the second filter amplification circuit and the second analog to digital conversion circuit, the output end of second frequency dividing circuit with
The input terminal of second filter amplification circuit connects, and the output end of second filter amplification circuit and second modulus turn
Change the input terminal connection of circuit, the input terminal company of the output end of second analog to digital conversion circuit and first main control module
It connects.
8. bimodulus blood flow detecting device according to claim 7, which is characterized in that first filter amplification circuit includes
First low-pass filter circuit, the first signal amplification circuit and the first high-pass filtering circuit；The output end of first frequency dividing circuit
It is connect with the input terminal of first low-pass filter circuit, the output end of first low-pass filter circuit and first signal
The input terminal of amplifying circuit connects, and the output end of first signal amplification circuit is in the input of first high-pass filtering circuit
End connection, the output end of first high-pass filtering circuit are connect with the input terminal of first analog to digital conversion circuit.
9. bimodulus blood flow detecting device according to claim 7 or 8, which is characterized in that second filter amplification circuit
Including the second low-pass filter circuit, second signal amplifying circuit and the second high-pass filtering circuit；Second frequency dividing circuit it is defeated
Outlet is connect with the input terminal of second filter circuit, and the output end of second filter circuit and the second signal are amplified
The input terminal of circuit connects, and the input terminal of the output end of the second signal amplifying circuit and second high-pass filtering circuit connects
It connects, the output end of second high-pass filtering circuit is connect with the input terminal of second analog-to-digital conversion module.
10. bimodulus blood flow detecting device according to claim 1 or 2, which is characterized in that the silicon optical detection system packet
Include: silicon optical detector, carrier circuit, ON-OFF control circuit, the second main control module, the first filter circuit, first voltage follow electricity
Road and third signal amplification circuit, the output end of the carrier circuit is connect with the input terminal of the ON-OFF control circuit, described
The output end of second main control module is connect with the control terminal of the ON-OFF control circuit, the output end of the ON-OFF control circuit with
The transmitting terminal of the silicon optical detector is connected for emitting the first light wave detectable signal, the receiving end of the silicon optical detector
It is connect with the input terminal of first filter circuit for receiving the second light wave detectable signal, first filter circuit
Output end follows the input terminal of circuit to connect with the first voltage, and the first voltage follows the output end and described the of circuit
The input terminal of one signal amplification circuit connects, and the output end of the third signal amplification circuit is defeated with second main control module
Enter end connection.
11. bimodulus blood flow detecting device according to claim 10, which is characterized in that the silicon optical detection system further includes
5th signal amplification circuit, the output end of first filter circuit are connect with the input terminal of the 5th signal amplification circuit,
The output end of 5th signal amplification circuit is connect with the input terminal of the ON-OFF control circuit.
12. bimodulus blood flow detecting device according to claim 10, which is characterized in that the silicon optical detection system further includes
Second voltage follows circuit and fourth signal amplifying circuit, the output end of the third signal amplification circuit and the second voltage
The input terminal of circuit is followed to connect, the second voltage follows the output end of circuit and the input of the fourth signal amplifying circuit
End connection, the output end of the fourth signal amplifying circuit are connect with the input terminal of second main control module.
13. bimodulus blood flow detecting device according to claim 12, which is characterized in that the silicon optical detection system further includes
Second filter circuit, the output end of the fourth signal amplifying circuit is connect with the input terminal of second filter circuit, described
The output end of second filter circuit is connect with the input terminal of second main control module.
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| WO2018136379A1 (en) * | 2017-01-17 | 2018-07-26 | Mayo Foundation For Medical Education And Research | System and method for assessing physiological signal quality |
| CN107744400A (en) * | 2017-11-20 | 2018-03-02 | 深圳市贝斯曼精密仪器有限公司 | A kind of peripheral vascular detector of the electronic pressare-measuring of the flat probe of ultrasonic Doppler |
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