CN209499759U - Cardiechema signals filter circuit and analysis of PCG Signal device - Google Patents
Cardiechema signals filter circuit and analysis of PCG Signal device Download PDFInfo
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- CN209499759U CN209499759U CN201822193069.7U CN201822193069U CN209499759U CN 209499759 U CN209499759 U CN 209499759U CN 201822193069 U CN201822193069 U CN 201822193069U CN 209499759 U CN209499759 U CN 209499759U
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Abstract
The utility model is suitable for the field of medical instrument technology, providing a kind of cardiechema signals filter circuit includes amplifying circuit, 15Hz high-pass filtering circuit, 50Hz notch filter circuit and 2KHz low-pass filter circuit, the output end of the input terminal connection heart sound signal acquisition device of amplifying circuit, the input terminal of the output end connection 15Hz high-pass filtering circuit of amplifying circuit, the input terminal of the output end connection 50Hz notch filter circuit of 15Hz high-pass filtering circuit, the input terminal of the output end connection 2KHz low-pass filter circuit of 50Hz notch filter circuit, the processor of the output end connection analysis of PCG Signal device of 2KHz low-pass filter circuit.The cardiechema signals that the circuit acquires heart sound signal acquisition device are handled, and finally obtain the signal of 15Hz to 2KHz, realize the accurate extraction to cardiechema signals, and analysis of PCG Signal device analyzes the signal of 15Hz to 2KHz, improve the accuracy of analysis.
Description
Technical field
The utility model belongs to the field of medical instrument technology more particularly to a kind of cardiechema signals filter circuit and cardiechema signals
Analytical equipment.
Background technique
When being acquired to human heart sound signal, since heart blood springs up sound, human body noise, ambient noise etc. is other to be done
It disturbs signal to be mixed into cardiechema signals, causes to include other noise signals in the cardiechema signals of acquisition, cause subsequent to heart sound letter
Number analysis there are errors.
Utility model content
In view of this, the utility model embodiment provides a kind of cardiechema signals filter circuit and analysis of PCG Signal dress
It sets, to solve the problems, such as that cardiechema signals include other noise signals in the prior art.
In order to solve the above technical problems, the first embodiment of the utility model provides a kind of cardiechema signals filter circuit,
Including amplifying circuit, 15Hz high-pass filtering circuit, 50Hz notch filter circuit and 2KHz low-pass filter circuit, the amplifying circuit
Input terminal connection heart sound signal acquisition device output end, the output end of the amplifying circuit connects the 15Hz high-pass filtering
The input terminal of circuit, the output end of the 15Hz high-pass filtering circuit connect the input terminal of the 50Hz notch filter circuit, institute
The output end for stating 50Hz notch filter circuit connects the input terminal of the 2KHz low-pass filter circuit, the 2KHz low-pass filtering electricity
The processor of the output end connection analysis of PCG Signal device on road.
Further, the amplifying circuit includes resistance R1, resistance R2, resistance R4, resistance R10, resistance R17, resistance
R18, resistance R19, capacitor C8, capacitor C5, capacitor C3, capacitor C11, capacitor C16, capacitor C17 and amplification chip, the resistance R1
One end be separately connected the first output end of heart sound signal acquisition device and one end of the capacitor C8, the resistance R1's is another
Connection+2V power supply is held, the other end of the capacitor C8 connects one end of the resistance R2, and the other end of the resistance R2 connects respectively
One end, one end of the resistance R4 and the third pin of the amplification chip of the capacitor C5 are connect, the capacitor C5's is another
End is separately connected one end and ground of the other end of the resistance R4, one end of the capacitor C16, the resistance R19, the capacitor
The other end of C16 is separately connected the second of the other end of the resistance R19, one end of the resistance R18 and the amplification chip
Pin, the other end of the resistance R18 connect one end of the capacitor C11, and the other end of the capacitor C11 is separately connected described
One end of resistance R17 and the second output terminal of heart sound signal acquisition device, the other end ground connection of the resistance R17, the resistance
One end of R10 connects the 8th pin of the amplification chip, and the other end of the resistance R10 connects the first of the amplification chip
Pin, one end of the capacitor C3 are separately connected the 7th pin and+2V power supply of the amplification chip, and the capacitor C3's is another
End ground connection, one end of the capacitor C17 are separately connected the 4th pin and -2V power supply of the amplification chip, the capacitor C17's
The other end is separately connected the 5th pin and ground of the amplification chip, and the 6th pin of the amplification chip connects the 15Hz high
The input terminal of bandpass filter circuit.
Further, the amplification chip is INA188ID.
Further, the 15Hz high-pass filtering circuit includes capacitor C13, capacitor C14, capacitor C1, capacitor C21, resistance
One end of R5, resistance R23, resistance R25, resistance R26 and the first filtering chip, the capacitor C13 connects the amplifying circuit
Output end, the other end of the capacitor C13 are separately connected one end of the capacitor C14 and one end of resistance R5, the capacitor C14
The other end be separately connected one end of the resistance R23 and the third pin of first filtering chip, the resistance R23's is another
One end ground connection, the other end of the resistance R5 be separately connected the resistance R25 one end and first filtering chip first
Pin, the other end of the resistance R25 is separately connected one end of the resistance R26 and the second of first filtering chip is drawn
Foot, the other end ground connection of the resistance R26, one end of the capacitor C1 is separately connected the 8th pin of first filtering chip
It is grounded with the other end of+2V power supply, the capacitor C1, one end of the capacitor C21 is separately connected first filtering chip
The other end of 4th pin and -2V power supply, the capacitor C21 is grounded, described in the first pin connection of first filtering chip
The input terminal of 50Hz notch filter circuit.
Further, first filtering chip is OPA2188AIDGK.
Further, the 50Hz notch filter circuit includes resistance R20, resistance R6, resistance R21, resistance R7, resistance
R22, resistance R8, resistance R13, capacitor C6, capacitor C18, capacitor C7, capacitor C15 and the second filtering chip, the one of the resistance R8
End is separately connected one end of the output end of the 15Hz high-pass filtering circuit, one end of the capacitor C6 and the resistance R20, institute
The other end for stating capacitor C6 is separately connected one end of the resistance R6 and one end of the capacitor C7, and the resistance R20's is another
End is separately connected one end of the capacitor C18 and one end of the resistance R21, and the other end of the resistance R6 is separately connected described
The other end of capacitor C18, one end of the resistance R22, the 6th pin of second filtering chip, second filtering chip
The 7th pin and the resistance R13 one end, the other end of the capacitor C7 be separately connected the resistance R21 the other end,
The other end of 5th pin of one end of resistance R7 and second filtering chip, the resistance R7 is separately connected the capacitor
One end of C15 and the other end of resistance R22, the other end ground connection of the capacitor C15, the other end of the resistance R13 connect respectively
Connect the other end of the resistance R8 and the input terminal of the 2KHz low-pass filter circuit.
Further, second filtering chip is OPA2188AIDGK.
Further, the 2KHz low-pass filter circuit includes resistance R3, resistance R11, resistance R12, resistance R24, resistance
R15, resistance R9, resistance R16, resistance R14, capacitor C4, capacitor C9, capacitor C2, capacitor C12, capacitor C19, capacitor C20, capacitor
C10 and third filtering chip, one end of the resistance R14 connect the output end of the 50Hz notch filter circuit, the resistance
The other end of R14 is separately connected one end of one end of the resistance R15, one end of the resistance R24 and the capacitor C9, described
The other end of capacitor C9 is separately connected one end of one end of the resistance R11, one end of the resistance R12 and the resistance R3,
The other end of the resistance R11 is grounded, and the other end of the resistance R3 is separately connected one end of the capacitor C4, the capacitor
The first input end of one end of C10, one end of the resistance R9 and analysis of PCG Signal de-vice processor, the capacitor C4's is another
One end is separately connected the other end of the resistance R12 and the 8th pin of the third filtering chip, one end of the capacitor C12
The 7th pin of the third filtering chip is connected, the other end of the capacitor C12 is grounded, and the second of the third filtering chip
Pin ground connection, the other end of the resistance R15 be separately connected the capacitor C19 one end and the third filtering chip first
Pin, the other end of the resistance R24 is separately connected the other end of the other end of the capacitor C19, the capacitor C10, described
One end of resistance R16 and the second input terminal of analysis of PCG Signal de-vice processor, the resistance R9 the other end connection described in
5th pin of third filtering chip, the other end of the resistance R16 connects the 4th pin of the third filtering chip, described
One end of capacitor C20 is separately connected the 6th pin and -2V power supply of the third filtering chip, the other end of the capacitor C20
Ground connection, one end of the capacitor C2 are separately connected the third pin and+2V power supply of the third filtering chip, the capacitor C2's
Other end ground connection.
Further, the third filtering chip is LTC6363IMS8#PBF.
The second embodiment of the utility model provides a kind of analysis of PCG Signal device, believes including heart sound described above
Number filter circuit.
The beneficial effects of adopting the technical scheme are that the utility model devises a kind of cardiechema signals filtering
Circuit, heart sound signal acquisition device are sent in amplifying circuit after being acquired to heart sound, and amplifying circuit is to cardiechema signals through putting
Greatly, amplified signal enters in 15Hz high-pass filtering circuit, is filled into 15Hz signal below, then falls by 50Hz power frequency
The power frequency component of 50Hz in signal is filtered, then through 2KHz low-pass filter circuit, will be above the signal mistake of 2KHz by wave circuit
Filter, finally obtains the signal of 15Hz to 2KHz, realizes the accurate extraction to cardiechema signals, analysis of PCG Signal device to 15Hz extremely
The signal of 2KHz is analyzed, and the accuracy of analysis is improved.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the circuit diagram of cardiechema signals filter circuit provided by the embodiment of the utility model；
Fig. 2 is the circuit diagram of amplifying circuit provided by the embodiment of the utility model；
Fig. 3 is the circuit diagram of 15Hz high-pass filtering circuit provided by the embodiment of the utility model；
Fig. 4 is the circuit diagram of 50Hz notch filter circuit provided by the embodiment of the utility model；
Fig. 5 is the circuit diagram of 2KHz low-pass filter circuit provided by the embodiment of the utility model.
In figure: 100, amplifying circuit；200,15Hz high-pass filtering circuit；300,50Hz notch filter circuit；400,2KHz
Low-pass filter circuit.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
As shown in Figure 1, cardiechema signals filter circuit includes amplifying circuit 100,15Hz high-pass filtering circuit 200,50Hz work
Frequency trap circuit 300 and 2KHz low-pass filter circuit 400, the input terminal connection heart sound signal acquisition device of amplifying circuit 100
Output end, the input terminal of the output end connection 15Hz high-pass filtering circuit 200 of amplifying circuit 100,15Hz high-pass filtering circuit 200
Output end connection 50Hz notch filter circuit 300 input terminal, 50Hz notch filter circuit 300 output end connection 2KHz it is low
The input terminal of bandpass filter circuit 400, the processing of the output end connection analysis of PCG Signal device of 2KHz low-pass filter circuit 400
Device.
Heart sound signal acquisition device is sent in amplifying circuit 100 after being acquired to heart sound, and amplifying circuit 100 is to heart sound
Through amplifying, amplified signal enters in 15Hz high-pass filtering circuit 200 signal, is filled into 15Hz signal below, then passes through
50Hz notch filter circuit 300 is crossed, the power frequency component of the 50Hz in signal is filtered, then through 2KHz low-pass filter circuit 400, it will
Signal filtering higher than 2KHz, finally obtains the signal of 15Hz to 2KHz, realizes the accurate extraction to cardiechema signals, cardiechema signals
Analytical equipment analyzes the signal of 15Hz to 2KHz, improves the accuracy of analysis.
As shown in Fig. 2, amplifying circuit 100 includes resistance R1, resistance R2, resistance R4, resistance R10, resistance R17, resistance
R18, resistance R19, capacitor C8, capacitor C5, capacitor C3, capacitor C11, capacitor C16, capacitor C17 and amplification chip, the one of resistance R1
End is separately connected the first output end of heart sound signal acquisition device and one end of capacitor C8, the other end connection+2V electricity of resistance R1
Source, one end of the other end connection resistance R2 of capacitor C8, the other end of resistance R2 are separately connected one end of capacitor C5, resistance R4
The third pin of one end and amplification chip, the other end of capacitor C5 be separately connected the other end of resistance R4, capacitor C16 one end,
One end and ground of resistance R19, the other end of capacitor C16 are separately connected the other end of resistance R19, one end of resistance R18 and amplification
The second pin of chip, one end of the other end connection capacitor C11 of resistance R18, the other end of capacitor C11 are separately connected resistance
One end of R17 and the second output terminal of heart sound signal acquisition device, the other end ground connection of resistance R17, one end connection of resistance R10
8th pin of amplification chip, the first pin of the other end connection amplification chip of resistance R10, one end of capacitor C3 is separately connected
The other end of the 7th pin and+2V power supply of amplification chip, capacitor C3 is grounded, and one end of capacitor C17 is separately connected amplification chip
The 4th pin and -2V power supply, the other end of capacitor C17 is separately connected the 5th pin and ground of amplification chip, amplification chip
The input terminal of 6th pin connection 15Hz high-pass filtering circuit 200.
In one embodiment of the utility model, amplification chip INA188ID.
Amplifying circuit 100 can amplify circuit.
As shown in figure 3,15Hz high-pass filtering circuit 200 includes capacitor C13, capacitor C14, capacitor C1, capacitor C21, resistance
R5, resistance R23, resistance R25, resistance R26 and the first filtering chip, the output of one end connection amplifying circuit 100 of capacitor C13
End, the other end of capacitor C13 are separately connected one end of capacitor C14 and one end of resistance R5, and the other end of capacitor C14 is separately connected
The third pin of one end of resistance R23 and the first filtering chip, the other end ground connection of resistance R23, the other end difference of resistance R5
One end of resistance R25 and the first pin of the first filtering chip are connected, the other end of resistance R25 is separately connected the one of resistance R26
The second pin at end and the first filtering chip, the other end ground connection of resistance R26, one end of capacitor C1 is separately connected the first filtering core
The other end of the 8th pin and+2V power supply of piece, capacitor C1 is grounded, and one end of capacitor C21 is separately connected the first filtering chip
The other end of 4th pin and -2V power supply, capacitor C21 is grounded, and the first pin of the first filtering chip connects 50Hz notch filter
The input terminal of circuit 300.
In one embodiment of the utility model, the first filtering chip is OPA2188AIDGK.
The signal that 15Hz high-pass filtering circuit 200 will be less than 15Hz is filtered.
As shown in figure 4,50Hz notch filter circuit 300 includes resistance R20, resistance R6, resistance R21, resistance R7, resistance
R22, resistance R8, resistance R13, capacitor C6, capacitor C18, capacitor C7, capacitor C15 and the second filtering chip, one end point of resistance R8
Not Lian Jie the output end of 15Hz high-pass filtering circuit 200, one end of capacitor C6 and resistance R20 one end, the other end of capacitor C6
It is separately connected one end of resistance R6 and one end of capacitor C7, the other end of resistance R20 is separately connected one end and the resistance of capacitor C18
One end of R21, the other end of resistance R6 are separately connected the other end of capacitor C18, one end of resistance R22, second filtering chip
6th pin, the second filtering chip the 7th pin and resistance R13 one end, the other end of capacitor C7 is separately connected resistance R21
The other end, one end of resistance R7 and the 5th pin of the second filtering chip, the other end of resistance R7 is separately connected capacitor C15's
The other end of one end and resistance R22, the other end ground connection of capacitor C15, the other end of resistance R13 are separately connected the another of resistance R8
The input terminal at end and 2KHz low-pass filter circuit 400.
In one embodiment of the utility model, the second filtering chip is OPA2188AIDGK.
The power frequency interference signals of 50Hz are filtered by 50Hz notch filter circuit 300.
As shown in figure 5,2KHz low-pass filter circuit 400 includes resistance R3, resistance R11, resistance R12, resistance R24, resistance
R15, resistance R9, resistance R16, resistance R14, capacitor C4, capacitor C9, capacitor C2, capacitor C12, capacitor C19, capacitor C20, capacitor
C10 and third filtering chip, the output end of one end connection 50Hz notch filter circuit 300 of resistance R14, resistance R14's is another
End is separately connected one end of one end of resistance R15, one end of resistance R24 and capacitor C9, and the other end of capacitor C9 is separately connected electricity
Hinder one end, one end of resistance R12 and one end of resistance R3 of R11, the other end ground connection of resistance R11, the other end point of resistance R3
Not Lian Jie one end of capacitor C4, one end of capacitor C10, one end of resistance R9 and analysis of PCG Signal de-vice processor it is first defeated
Enter end, the other end of capacitor C4 is separately connected the other end of resistance R12 and the 8th pin of third filtering chip, capacitor C12's
One end connects the 7th pin of third filtering chip, the other end ground connection of capacitor C12, and the second pin of third filtering chip connects
Ground, the other end of resistance R15 are separately connected one end of capacitor C19 and the first pin of third filtering chip, and resistance R24's is another
End is separately connected the other end of the other end of capacitor C19, capacitor C10, one end of resistance R16 and the processing of analysis of PCG Signal device
Second input terminal of device, the 5th pin of the other end connection third filtering chip of resistance R9, the other end connection the of resistance R16
4th pin of three filtering chips, one end of capacitor C20 are separately connected the 6th pin and -2V power supply of third filtering chip, electricity
Hold the other end ground connection of C20, one end of capacitor C2 is separately connected the third pin and+2V power supply of third filtering chip, capacitor C2
The other end ground connection.
In one embodiment of the utility model, third filtering chip is LTC6363IMS8#PBF.
The signal that 2KHz low-pass filter circuit 400 will be above 2KHz is filtered, and finally obtains the heart sound of 15Hz to 2KHz
Signal.
The utility model provides a kind of analysis of PCG Signal device, including above-mentioned cardiechema signals filter circuit.The dress
The accurate collection analysis that can be realized to cardiechema signals is set, analysis result is more accurate.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to before
Embodiment is stated the utility model is described in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of cardiechema signals filter circuit, which is characterized in that including amplifying circuit, 15Hz high-pass filtering circuit, 50Hz power frequency
Trap circuit and 2KHz low-pass filter circuit, the output end of the input terminal connection heart sound signal acquisition device of the amplifying circuit,
The output end of the amplifying circuit connects the input terminal of the 15Hz high-pass filtering circuit, the 15Hz high-pass filtering circuit it is defeated
Outlet connects the input terminal of the 50Hz notch filter circuit, and the output end of the 50Hz notch filter circuit connects the 2KHz
The input terminal of low-pass filter circuit, the processing of the output end connection analysis of PCG Signal device of the 2KHz low-pass filter circuit
Device.
2. cardiechema signals filter circuit according to claim 1, which is characterized in that the amplifying circuit include resistance R1,
Resistance R2, resistance R4, resistance R10, resistance R17, resistance R18, resistance R19, capacitor C8, capacitor C5, capacitor C3, capacitor C11, electricity
Hold C16, capacitor C17 and amplification chip, one end of the resistance R1 and is separately connected the first output end of heart sound signal acquisition device
The electricity is connected with the other end of one end of the capacitor C8, the other end connection+2V power supply of the resistance R1, the capacitor C8
Hinder one end of R2, the other end of the resistance R2 is separately connected one end of the capacitor C5, one end of the resistance R4 and described
The third pin of amplification chip, the other end of the capacitor C5 are separately connected the other end of the resistance R4, the capacitor C16
One end, the resistance R19 one end and ground, the other end of the capacitor C16 is separately connected the other end of the resistance R19, institute
One end of resistance R18 and the second pin of the amplification chip are stated, the other end of the resistance R18 connects the capacitor C11's
One end, the other end of the capacitor C11 are separately connected one end of the resistance R17 and the second output of heart sound signal acquisition device
End, the other end ground connection of the resistance R17, one end of the resistance R10 connects the 8th pin of the amplification chip, the electricity
The other end of resistance R10 connects the first pin of the amplification chip, and one end of the capacitor C3 is separately connected the amplification chip
The 7th pin and+2V power supply, the other end of the capacitor C3 is grounded, and one end of the capacitor C17 is separately connected the amplification
4th pin of chip and -2V power supply, the other end of the capacitor C17 be separately connected the amplification chip the 5th pin and
Ground, the 6th pin of the amplification chip connect the input terminal of the 15Hz high-pass filtering circuit.
3. cardiechema signals filter circuit according to claim 2, which is characterized in that the amplification chip is INA188ID.
4. cardiechema signals filter circuit according to claim 1, which is characterized in that the 15Hz high-pass filtering circuit includes
Capacitor C13, capacitor C14, capacitor C1, capacitor C21, resistance R5, resistance R23, resistance R25, resistance R26 and the first filtering chip,
One end of the capacitor C13 connects the output end of the amplifying circuit, and the other end of the capacitor C13 is separately connected the capacitor
One end of C14 and one end of resistance R5, the other end of the capacitor C14 are separately connected one end and described of the resistance R23
The third pin of one filtering chip, the other end ground connection of the resistance R23, the other end of the resistance R5 are separately connected the electricity
One end of R25 and the first pin of first filtering chip are hindered, the other end of the resistance R25 is separately connected the resistance
The second pin of one end of R26 and first filtering chip, the other end ground connection of the resistance R26, the one of the capacitor C1
End is separately connected the 8th pin and+2V power supply of first filtering chip, and the other end of the capacitor C1 is grounded, the capacitor
One end of C21 is separately connected the 4th pin and -2V power supply of first filtering chip, and the other end of the capacitor C21 is grounded,
First pin of first filtering chip connects the input terminal of the 50Hz notch filter circuit.
5. cardiechema signals filter circuit according to claim 4, which is characterized in that first filtering chip is
OPA2188AIDGK。
6. cardiechema signals filter circuit according to claim 1, which is characterized in that the 50Hz notch filter circuit includes
Resistance R20, resistance R6, resistance R21, resistance R7, resistance R22, resistance R8, resistance R13, capacitor C6, capacitor C18, capacitor C7, electricity
Hold C15 and the second filtering chip, one end of the resistance R8 is separately connected the output end, described of the 15Hz high-pass filtering circuit
One end of one end of capacitor C6 and the resistance R20, the other end of the capacitor C6 be separately connected the resistance R6 one end and
One end of the capacitor C7, the other end of the resistance R20 be separately connected the capacitor C18 one end and the resistance R21
One end, the other end of the resistance R6 are separately connected the other end of the capacitor C18, one end of the resistance R22, described second
The 6th pin, the 7th pin of second filtering chip and one end of the resistance R13 of filtering chip, the capacitor C7's
The other end is separately connected the 5th pin of the other end of the resistance R21, one end of resistance R7 and second filtering chip, institute
The other end for stating resistance R7 is separately connected one end of the capacitor C15 and the other end of resistance R22, and the capacitor C15's is another
End ground connection, the other end of the resistance R13 are separately connected the other end and the 2KHz low-pass filter circuit of the resistance R8
Input terminal.
7. cardiechema signals filter circuit according to claim 6, which is characterized in that second filtering chip is
OPA2188AIDGK。
8. cardiechema signals filter circuit according to claim 1, which is characterized in that the 2KHz low-pass filter circuit includes
Resistance R3, resistance R11, resistance R12, resistance R24, resistance R15, resistance R9, resistance R16, resistance R14, capacitor C4, capacitor C9,
One end of capacitor C2, capacitor C12, capacitor C19, capacitor C20, capacitor C10 and third filtering chip, the resistance R14 connects institute
State the output end of 50Hz notch filter circuit, the other end of the resistance R14 is separately connected one end, described of the resistance R15
One end of one end of resistance R24 and the capacitor C9, the other end of the capacitor C9 be separately connected the resistance R11 one end,
One end of one end of the resistance R12 and the resistance R3, the other end ground connection of the resistance R11, the resistance R3's is another
End is separately connected one end of the capacitor C4, one end of the capacitor C10, one end of the resistance R9 and analysis of PCG Signal dress
Set the first input end of processor, the other end of the capacitor C4 be separately connected the resistance R12 the other end and the third
8th pin of filtering chip, one end of the capacitor C12 connect the 7th pin of the third filtering chip, the capacitor
The other end of C12 is grounded, and the second pin ground connection of the third filtering chip, the other end of the resistance R15 is separately connected institute
One end of capacitor C19 and the first pin of the third filtering chip are stated, the other end of the resistance R24 is separately connected the electricity
Hold the other end of the other end of C19, the capacitor C10, one end of the resistance R16 and analysis of PCG Signal de-vice processor
Second input terminal, the other end of the resistance R9 connect the 5th pin of the third filtering chip, and the resistance R16's is another
End connects the 4th pin of the third filtering chip, and one end of the capacitor C20 is separately connected the third filtering chip
The other end of 6th pin and -2V power supply, the capacitor C20 is grounded, and one end of the capacitor C2 is separately connected the third filter
The other end of the third pin and+2V power supply of wave chip, the capacitor C2 is grounded.
9. cardiechema signals filter circuit according to claim 8, which is characterized in that the third filtering chip is
LTC6363IMS8#PBF。
10. a kind of analysis of PCG Signal device, which is characterized in that including the described in any item cardiechema signals filters of claim 1 to 9
Wave circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822193069.7U CN209499759U (en) | 2018-12-25 | 2018-12-25 | Cardiechema signals filter circuit and analysis of PCG Signal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822193069.7U CN209499759U (en) | 2018-12-25 | 2018-12-25 | Cardiechema signals filter circuit and analysis of PCG Signal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209499759U true CN209499759U (en) | 2019-10-18 |
Family
ID=68197207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822193069.7U Active CN209499759U (en) | 2018-12-25 | 2018-12-25 | Cardiechema signals filter circuit and analysis of PCG Signal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209499759U (en) |
-
2018
- 2018-12-25 CN CN201822193069.7U patent/CN209499759U/en active Active
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