CN107212865A - A kind of Wearable pulse signal Acquisition Circuit - Google Patents
A kind of Wearable pulse signal Acquisition Circuit Download PDFInfo
- Publication number
- CN107212865A CN107212865A CN201710544987.7A CN201710544987A CN107212865A CN 107212865 A CN107212865 A CN 107212865A CN 201710544987 A CN201710544987 A CN 201710544987A CN 107212865 A CN107212865 A CN 107212865A
- Authority
- CN
- China
- Prior art keywords
- power amplifier
- resistance
- output end
- pulse signal
- signal acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
-
- 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
Abstract
The invention discloses a kind of Wearable pulse signal Acquisition Circuit, including four power amplifiers, infrared transmitting tube K1, infrared receiving tube K2, infrared transmitting tube K1 is driven to be lighted by PWM, human pulse can change infrared transmitting tube K1 luminescent line, by just to infrared receiving tube K2, due to the change of luminescent line, infrared receiving tube K2 output signal can change, by detecting pulse signal, and it is provided with two paths of signals channel terminals, can be as contrast, to improve the accuracy of pulse signal detection, and, circuit is simple, it is easy to be placed with skin, it is low in energy consumption, it is with low cost, have a good application prospect.
Description
Technical field
The present invention relates to a kind of Wearable pulse signal Acquisition Circuit, belong to technical field of medical equipment.
Background technology
With the miniaturization of electronics technology, electronics wearable device is widely used.At present, deposit on the market
In Wearable monitoring of pulse equipment, still, interference free performance is poor, and monitoring stability is not good, especially signal acquisition process mistake
Journey, accuracy is low, it is impossible to accurately reflect the pulse condition of human body.
The content of the invention
The purpose of the present invention be overcome be existing air negative ion generator circuit it is complicated, it is expensive, be unfavorable for
It is widely popularized the problem of using.The Wearable pulse signal Acquisition Circuit of the present invention, drives infrared transmitting tube K1 to carry out by PWM
Luminous, human pulse can change infrared transmitting tube K1 luminescent line, by just to infrared receiving tube K2, due to luminescent line
Change, infrared receiving tube K2 output signal can change, and be led to by detecting pulse signal, and being provided with two paths of signals
Road terminal, to improve the accuracy of pulse signal detection, moreover, circuit is simple, can be easy to be placed with skin as contrast
On, it is low in energy consumption, it is with low cost, have a good application prospect.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of Wearable pulse signal Acquisition Circuit, it is characterised in that：Including the first power amplifier U1, first power is put
The big device U1 external PWM Regulate signals terminal of reverse input end, the positive input and power supply of the first power amplifier U1
VCC1 is connected, the reverse input that the output end of the first power amplifier U1 passes through resistance R1 and the first power amplifier U1
End is connected, and the two ends of the resistance R1 are parallel with feedback capacity C1, and the output end of the first power amplifier U1 passes through electricity
Resistance R2 is connected with infrared transmitting tube K1, and the infrared transmitting tube K1 and infrared receiving tube K2 is just to setting, the infrared receiver
Pipe K2 output end is connected by resistance R3 with power supply VCC, described, and the ground terminal of the infrared receiving tube K2 is connected to the ground
Connect, the reverse input end of the output end of the infrared receiving tube K2 also with the second power amplifier U2 is connected, second work(
Rate amplifier U2 positive input is connected with the second power amplifier U2 output end, the second power amplifier U2
Output end as the first signal paths terminal,
It is reverse with the 3rd power amplifier U3's that the output end of the second power amplifier U2 passes sequentially through resistance R4, electric capacity C2
Input is connected, and the positive input of the 3rd power amplifier U3 is connected with power supply VCC1, and the 3rd power is put
Big device U3 output end is connected by resistance R5 with the 3rd power amplifier U3 reverse input end, the two ends of the resistance R5
Feedback capacity C3 is parallel with, the output end of the 3rd power amplifier U3 passes sequentially through resistance R6, electric capacity C4 and the 4th power
Amplifier U4 reverse input end is connected, and the positive input of the 4th power amplifier U4 is connected with power supply VCC1,
The output end of the 4th power amplifier U4 is connected by resistance R7 with the 4th power amplifier U4 reverse input end, institute
The two ends for stating resistance R7 are parallel with feedback capacity C5, and the output end of the 4th power amplifier U4 is as secondary signal paths
Terminal.
A kind of foregoing Wearable pulse signal Acquisition Circuit, it is characterised in that：The power supply VCC passes through resistance R8, electricity
Resistance R9 is connected to the ground, and the resistance R8, resistance R9 junctions are that power supply VCC1, the power supply VCC1 also pass through filter capacitor C6
It is connected to the ground.
A kind of foregoing Wearable pulse signal Acquisition Circuit, it is characterised in that：The infrared transmitting tube K1 also passes through electricity
Hold C7 to be connected to the ground.
A kind of foregoing Wearable pulse signal Acquisition Circuit, it is characterised in that：The model of the infrared transmitting tube K1
KP-2012F3C, the model KP-2012P3C of the infrared receiving tube K2.
A kind of foregoing Wearable pulse signal Acquisition Circuit, it is characterised in that：The first power amplifier U1's is defeated
Go out end by resistance R10 with the first power amplifier U1 reverse input end to be connected, the two ends of the resistance R10 are parallel with instead
Feed holds C8.
A kind of foregoing Wearable pulse signal Acquisition Circuit, it is characterised in that：The rear end string of the low-pass filter circuit
It is associated with R11.
The beneficial effects of the invention are as follows：The Wearable pulse signal Acquisition Circuit of the present invention, infrared emission is driven by PWM
Pipe K1 is lighted, and human pulse can change infrared transmitting tube K1 luminescent line, by just to infrared receiving tube K2, due to
The change of luminescent line, infrared receiving tube K2 output signal can change, and by detecting pulse signal, and be provided with two
Road signalling channel terminal, to improve the accuracy of pulse signal detection, moreover, circuit is simple, can be easy to be placed with as contrast
It is low in energy consumption on skin, it is with low cost, have a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of the Wearable pulse signal Acquisition Circuit of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only used for clearly
Illustrate technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, the Wearable pulse signal Acquisition Circuit of the present invention, including the first power amplifier U1, described the
The one power amplifier U1 external PWM Regulate signals terminal of reverse input end, the positive input of the first power amplifier U1
End is connected with power supply VCC1, and the output end of the first power amplifier U1 passes through resistance R1's and the first power amplifier U1
Reverse input end is connected, and the two ends of the resistance R1 are parallel with feedback capacity C1, the output of the first power amplifier U1
End is connected by resistance R2 with infrared transmitting tube K1, and the infrared transmitting tube K1 and infrared receiving tube K2 is described just to setting
Infrared receiving tube K2 output end is connected by resistance R3 with power supply VCC, described, the ground terminal of the infrared receiving tube K2
It is connected to the ground, the reverse input end of the output end of the infrared receiving tube K2 also with the second power amplifier U2 is connected, institute
The positive input for stating the second power amplifier U2 is connected with the second power amplifier U2 output end, second power
Amplifier U2 output end as the first signal paths terminal,
It is reverse with the 3rd power amplifier U3's that the output end of the second power amplifier U2 passes sequentially through resistance R4, electric capacity C2
Input is connected, and the positive input of the 3rd power amplifier U3 is connected with power supply VCC1, and the 3rd power is put
Big device U3 output end is connected by resistance R5 with the 3rd power amplifier U3 reverse input end, the two ends of the resistance R5
Feedback capacity C3 is parallel with, the output end of the 3rd power amplifier U3 passes sequentially through resistance R6, electric capacity C4 and the 4th power
Amplifier U4 reverse input end is connected, and the positive input of the 4th power amplifier U4 is connected with power supply VCC1,
The output end of the 4th power amplifier U4 is connected by resistance R7 with the 4th power amplifier U4 reverse input end, institute
The two ends for stating resistance R7 are parallel with feedback capacity C5, and the output end of the 4th power amplifier U4 is as secondary signal paths
Terminal.
The power supply VCC is connected to the ground by resistance R8, resistance R9, and the resistance R8, resistance R9 junctions are power supply
VCC1, the power supply VCC1 is also connected to the ground by filter capacitor C6.
The infrared transmitting tube K1 is also connected to the ground by electric capacity C7.
The model KP-2012F3C, the model KP- of the infrared receiving tube K2 of the infrared transmitting tube K1
2012P3C。
The output end of the first power amplifier U1 passes through resistance R10 and the first power amplifier U1 reverse input end
It is connected, the two ends of the resistance R10 are parallel with feedback capacity C8, improve the accuracy of first via signal channel terminals, pass through
Two paths of signals channel terminals, can be as contrast, to improve the accuracy of pulse signal detection, second road signal channel terminals ratio
Two power amplifiers having been carried out first via signal channel terminals, the electric signal for change of being more convenient for collecting more.
Low-pass filter circuit is provided with the PWM Regulate signals terminal, the rear end of the low-pass filter circuit is in series with
R11, can guarantee that the stability of PWM Regulate signals, prevent interference, so that infrared transmitting tube K1 exports stable luminescent line, make
Used time, infrared transmitting tube K1 is just to infrared receiving tube K2, when pulse vibrates, infrared transmitting tube K1 and infrared receiving tube K2
Between can have displacement, the luminescent line that infrared receiving tube K2 is received changes, i.e., can produce electric signal, is amplified place
After reason, pulse signal is obtained.
In summary, Wearable pulse signal Acquisition Circuit of the invention, drives infrared transmitting tube K1 to be sent out by PWM
Light, human pulse can change infrared transmitting tube K1 luminescent line, by just to infrared receiving tube K2, due to luminescent line
Change, infrared receiving tube K2 output signal can change, and by detecting pulse signal, and be provided with two paths of signals passage
Terminal, to improve the accuracy of pulse signal detection, moreover, circuit is simple, can be easy to be placed with skin as contrast,
It is low in energy consumption, it is with low cost, have a good application prospect.
General principle, principal character and the advantage of the present invention has been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (6)
1. a kind of Wearable pulse signal Acquisition Circuit, it is characterised in that：Including the first power amplifier U1, first power
The amplifier U1 external PWM Regulate signals terminal of reverse input end, positive input and the electricity of the first power amplifier U1
Source VCC1 is connected, and the output end of the first power amplifier U1 passes through the reverse defeated of resistance R1 and the first power amplifier U1
Enter end to be connected, the two ends of the resistance R1 are parallel with feedback capacity C1, and the output end of the first power amplifier U1 passes through
Resistance R2 is connected with infrared transmitting tube K1, and the infrared transmitting tube K1 and infrared receiving tube K2 are described infrared to connect just to setting
Closed tube K2 output end is connected by resistance R3 with power supply VCC, described, ground terminal and the ground phase of the infrared receiving tube K2
Connection, the reverse input end of the output end of the infrared receiving tube K2 also with the second power amplifier U2 is connected, and described second
Power amplifier U2 positive input is connected with the second power amplifier U2 output end, second power amplifier
U2 output end as the first signal paths terminal,
It is reverse with the 3rd power amplifier U3's that the output end of the second power amplifier U2 passes sequentially through resistance R4, electric capacity C2
Input is connected, and the positive input of the 3rd power amplifier U3 is connected with power supply VCC1, and the 3rd power is put
Big device U3 output end is connected by resistance R5 with the 3rd power amplifier U3 reverse input end, the two ends of the resistance R5
Feedback capacity C3 is parallel with, the output end of the 3rd power amplifier U3 passes sequentially through resistance R6, electric capacity C4 and the 4th power
Amplifier U4 reverse input end is connected, and the positive input of the 4th power amplifier U4 is connected with power supply VCC1,
The output end of the 4th power amplifier U4 is connected by resistance R7 with the 4th power amplifier U4 reverse input end, institute
The two ends for stating resistance R7 are parallel with feedback capacity C5, and the output end of the 4th power amplifier U4 is as secondary signal paths
Terminal.
2. a kind of Wearable pulse signal Acquisition Circuit according to claim 1, it is characterised in that：The power supply VCC leads to
Cross resistance R8, resistance R9 to be connected to the ground, the resistance R8, resistance R9 junctions are that power supply VCC1, the power supply VCC1 also lead to
Filter capacitor C6 is crossed to be connected to the ground.
3. a kind of Wearable pulse signal Acquisition Circuit according to claim 1, it is characterised in that：The infrared transmitting tube
K1 is also connected to the ground by electric capacity C7.
4. a kind of Wearable pulse signal Acquisition Circuit according to claim 1, it is characterised in that：The infrared transmitting tube
K1 model KP-2012F3C, the model KP-2012P3C of the infrared receiving tube K2.
5. a kind of Wearable pulse signal Acquisition Circuit according to claim 1, it is characterised in that：First power is put
Big device U1 output end is connected by resistance R10 with the first power amplifier U1 reverse input end, and the two of the resistance R10
End is parallel with feedback capacity C8.
6. a kind of Wearable pulse signal Acquisition Circuit according to claim 1, it is characterised in that：The PWM regulations letter
Low-pass filter circuit is provided with number terminal, the rear end of the low-pass filter circuit is in series with R11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544987.7A CN107212865A (en) | 2017-07-06 | 2017-07-06 | A kind of Wearable pulse signal Acquisition Circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544987.7A CN107212865A (en) | 2017-07-06 | 2017-07-06 | A kind of Wearable pulse signal Acquisition Circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107212865A true CN107212865A (en) | 2017-09-29 |
Family
ID=59952119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710544987.7A Withdrawn CN107212865A (en) | 2017-07-06 | 2017-07-06 | A kind of Wearable pulse signal Acquisition Circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107212865A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109171764A (en) * | 2018-10-24 | 2019-01-11 | 重庆科技学院 | A kind of SCM Based blood oxygen detection method |
-
2017
- 2017-07-06 CN CN201710544987.7A patent/CN107212865A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109171764A (en) * | 2018-10-24 | 2019-01-11 | 重庆科技学院 | A kind of SCM Based blood oxygen detection method |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170929 |
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| WW01 | Invention patent application withdrawn after publication |