CN112826464A - Blood pressure detection circuit for medical equipment - Google Patents
Blood pressure detection circuit for medical equipment Download PDFInfo
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- CN112826464A CN112826464A CN202110062858.0A CN202110062858A CN112826464A CN 112826464 A CN112826464 A CN 112826464A CN 202110062858 A CN202110062858 A CN 202110062858A CN 112826464 A CN112826464 A CN 112826464A
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- capacitor
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- 230000036772 blood pressure Effects 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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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
- A61B5/72—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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
Abstract
The invention relates to the field of medical treatment, in particular to a blood pressure detection circuit for medical equipment. The technical problem of the invention is as follows: the blood pressure detection circuit for the medical equipment is simple to operate and high in accuracy. The technical implementation scheme of the invention is as follows: a blood pressure detection circuit for medical equipment comprises a power supply circuit, a blood pressure sensor, an RC circuit, a first amplification circuit and the like; the blood pressure sensor is connected with the input end of the RC circuit, and the output end of the RC circuit is connected with the input end of the first amplifying circuit. The invention can filter the clutter in the electric signal through the RC circuit, avoids the clutter from generating interference on the single chip microcomputer, improves the detection accuracy, is simple to operate, can adjust the width of the pulse signal through the first potentiometer, and ensures that the single chip microcomputer can detect the pulse signal.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to a blood pressure detection circuit for medical equipment.
Background
Blood pressure is the lateral pressure of blood acting on the vascular wall of unit area when flowing, is the power that promotes blood flow, can judge some diseases through blood pressure, is the important content of diagnosis disease and observation disease state change, mainly measures blood pressure through mercury sphygmomanometer at present, and in the operation process, people need wrap up patient's arm, and this is troublesome, and the degree of accuracy is not high.
Therefore, it is necessary to design a blood pressure detection circuit for medical equipment, which is simple to operate and has high accuracy.
Disclosure of Invention
In order to overcome the defects that the arms of a patient need to be wrapped by people, which is troublesome and has low accuracy, the invention has the technical problems that: the blood pressure detection circuit for the medical equipment is simple to operate and high in accuracy.
The technical implementation scheme of the invention is as follows: the utility model provides a blood pressure detection circuit for medical equipment, including power supply circuit, blood pressure sensor, RC circuit, first amplifier circuit, ADC input, pulse conversion circuit and pulse signal input, blood pressure sensor is connected with the input of RC circuit, the output of RC circuit is connected with first amplifier circuit's input, first amplifier circuit's output and ADC input are connected, the ADC input is connected with pulse conversion circuit's input, pulse conversion circuit's output and pulse signal input are connected, power supply circuit is blood pressure sensor, RC circuit, first amplifier circuit, ADC input, pulse conversion circuit and the power supply of pulse signal input.
In a preferred embodiment of the present invention, the pulse conversion circuit further includes a first potentiometer, the first potentiometer is connected to the input terminal of the pulse conversion circuit, and the power supply circuit supplies power to the first potentiometer.
In a preferred embodiment of the invention, the blood pressure sensor is MAX5050GP, the 2 pin of the MAX5050GP is grounded, and the 3 pin of the MAX5050GP is connected to + 5V.
In a preferred embodiment of the present invention, the RC circuit is a capacitor C2, and pin 1 of the MAX5050GP is connected to one end of a capacitor C2.
In a preferred embodiment of the present invention, the first amplifying circuit includes a micro power consumption operational amplifier MAX4472, a resistor R3-a resistor R5, a resistor R7-a resistor R8 and a capacitor C3-a capacitor C4, the pin 3 of the micro power consumption operational amplifier MAX4472 is connected to the other end of the capacitor C2, the pin 4 of the micro power consumption operational amplifier MAX4472 is connected to +5V, the pin 11 of the micro power consumption operational amplifier MAX4472 is connected to ground, the pin 1 of the micro power consumption operational amplifier MAX4472 is connected to the resistor R7 in parallel with the pin 2 thereof, the pin 1 of the micro power consumption operational amplifier MAX4472 is connected to the capacitor C3 in series, the pin 2 of the micro power consumption operational amplifier MAX4472 is connected to the resistor R8 and the capacitor C4 in series, the other end of the capacitor C4 is connected to ground, the resistor R3 is connected to the resistor R4 in series, the other end of the resistor R4 is connected to ground, the other end of the resistor R3 is connected to +5V, one end of the pin 3 of, the other end of the resistor R5 is connected with a node between the resistor R3 and the resistor R4.
In a preferred embodiment of the present invention, the pulse converting circuit includes a nanometer power comparator MAX9028, a capacitor C1, a resistor R1, a resistor R2, and a resistor R6, wherein pins 2 and 4 of the nanometer power comparator MAX9028 are both grounded, pin 6 of the nanometer power comparator MAX9028 is connected to +5V, pin 1 of the nanometer power comparator MAX9028 is respectively connected in series to a resistor R1 and a capacitor C1, the other end of the capacitor C1 is connected to pin 1 of the micropower operational amplifier MAX4472, the other end of the resistor R1 is grounded, pin 5 of the nanometer power comparator MAX9028 is connected in series to a resistor R2, the other end of the resistor R2 is connected to +5V, pin 3 of the nanometer power comparator MAX9028 is connected in series to a resistor R6, and the other end of the resistor R6 is connected to + 5V.
In a preferred embodiment of the present invention, the first potentiometer is a potentiometer VR1, one end of the potentiometer VR1 is connected to pin 3 of the nano-power comparator MAX9028, and the other end and the input end of the potentiometer VR1 are both grounded.
Has the advantages that: the invention can filter the clutter in the electric signal through the RC circuit, avoids the clutter from generating interference on the single chip microcomputer, improves the detection accuracy, is simple to operate, can adjust the width of the pulse signal through the first potentiometer, and ensures that the single chip microcomputer can detect the pulse signal.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
The parts are labeled as follows: 1. the blood pressure monitoring device comprises a power supply circuit, 2, a blood pressure sensor, 3, an RC circuit, 4, a first amplifying circuit, 5, an ADC input end, 6, a pulse conversion circuit, 7, a first potentiometer, 8 and a pulse signal input end.
Detailed Description
It is to be noted that, in the case of the different described embodiments, identical components are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to identical components having the same reference numerals or the same component names in a meaningful manner. The positional references selected in the description, such as upper, lower, lateral, etc., refer also to the directly described and illustrated figures and are to be read into the new position in the sense of a change in position.
Example 1
The utility model provides a blood pressure detection circuit for medical equipment, as shown in figure 1, including power supply circuit 1, blood pressure sensor 2, RC circuit 3, first amplifier circuit 4, ADC input 5, pulse conversion circuit 6 and pulse signal input 8, blood pressure sensor 2 is connected with RC circuit 3's input, RC circuit 3's output and first amplifier circuit 4's input are connected, first amplifier circuit 4's output and ADC input 5 are connected, ADC input 5 is connected with pulse conversion circuit 6's input, pulse conversion circuit 6's output and pulse signal input 8 are connected, power supply circuit 1 supplies power for blood pressure sensor 2, RC circuit 3, first amplifier circuit 4, ADC input 5, pulse conversion circuit 6 and pulse signal input 8.
Example 2
On the basis of embodiment 1, as shown in fig. 1, the power supply device further includes a first potentiometer 7, the first potentiometer 7 is connected to an input end of the pulse conversion circuit 6, and the power supply circuit 1 supplies power to the first potentiometer 7.
People can adjust the width of the pulse signal through the first potentiometer 7, and the singlechip can be ensured to detect the pulse signal.
Example 3
A blood pressure detection circuit for medical equipment is shown in figure 2, wherein the blood pressure sensor 2 is MAX5050GP, the 2 pin of the MAX5050GP is grounded, and the 3 pin of the MAX5050GP is connected with + 5V.
The RC circuit 3 is a capacitor C2, and the pin 1 of the MAX5050GP is connected with one end of a capacitor C2.
The first amplifying circuit 4 comprises a micro power consumption operational amplifier MAX4472, a resistor R3-a resistor R5, a resistor R7-a resistor R8 and a capacitor C3-a capacitor C4, the pin 3 of the micro power consumption operational amplifier MAX4472 is connected with the other end of the capacitor C2, the pin 4 of the micro power consumption operational amplifier MAX4472 is connected with +5V, the pin 11 of the micro power consumption operational amplifier MAX4472 is connected with the ground, the pin 1 of the micro power consumption operational amplifier MAX4472 is connected with the pin 2 thereof in parallel with a resistor R7, the pin 1 series capacitor C3 of the micro power consumption operational amplifier MAX4472 is grounded, the pin 2 series resistor R8 and the capacitor C4 of the micro power consumption operational amplifier MAX4472 are connected in series, the other end of the capacitor C4 is grounded, the resistor R3 is connected with the resistor R4 in series, the other end of the resistor R4 is grounded, the other end of the resistor R3 is connected with +5V, the pin 3 of the micro power consumption operational amplifier MAX4472 is connected with one end of a resistor R5, and the other end of the resistor R5 is connected with a node between the resistor R3 and the resistor R4.
The pulse conversion circuit 6 comprises a nanometer power comparator MAX9028, a capacitor C1, a resistor R1, a resistor R2 and a resistor R6, wherein pins 2 and 4 of the nanometer power comparator MAX9028 are grounded, pin 6 of the nanometer power comparator MAX9028 is connected with +5V, pin 1 of the nanometer power comparator MAX9028 is respectively connected with a resistor R1 and a capacitor C1 in series, the other end of the capacitor C1 is connected with pin 1 of the micro power consumption operational amplifier MAX4472, the other end of the resistor R1 is grounded, pin 5 of the nanometer power comparator MAX9028 is connected with the resistor R2 in series, the other end of the resistor R2 is connected with +5V, pin 3 of the nanometer power comparator MAX9028 is connected with the resistor R6 in series, and the other end of the resistor R6 is connected with + 5V.
The first potentiometer 7 is a potentiometer VR1, one end of the potentiometer VR1 is connected with the pin 3 of the nanometer power comparator MAX9028, and the other end and the input end of the potentiometer VR1 are both grounded.
The blood pressure is detected by MAX5050GP, the blood pressure is converted into an electric signal by MAX5050GP, clutter in the electric signal can be filtered by a capacitor C2, the electric signal is amplified by a micro-power-consumption operational amplifier MAX4472 and is input into a nano-power comparator MAX9028 through an ADC input end 5, people can input the pulse signal into a single chip microcomputer through a potentiometer VR1 according to the width of the pulse signal, a pulse signal input end 8 is input into the single chip microcomputer, the single chip microcomputer analyzes the pulse signal, and an analysis result is displayed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The utility model provides a blood pressure detection circuit for medical equipment, characterized by, including power supply circuit (1), blood pressure sensor (2), RC circuit (3), first amplifier circuit (4), ADC input (5), pulse conversion circuit (6) and pulse signal input (8), blood pressure sensor (2) are connected with the input of RC circuit (3), the output and the input of first amplifier circuit (4) of RC circuit (3) are connected, the output and the ADC input (5) of first amplifier circuit (4) are connected, ADC input (5) are connected with the input of pulse conversion circuit (6), the output and the pulse signal input (8) of pulse conversion circuit (6) are connected, power supply circuit (1) is blood pressure sensor (2), RC circuit (3), first amplifier circuit (4), The ADC input end (5), the pulse conversion circuit (6) and the pulse signal input end (8) are powered.
2. The blood pressure detection circuit for the medical equipment according to claim 1, further comprising a first potentiometer (7), wherein the first potentiometer (7) is connected with an input end of the pulse conversion circuit (6), and the power supply circuit (1) supplies power to the first potentiometer (7).
3. A blood pressure sensing circuit for medical equipment according to claim 2, wherein the blood pressure sensor (2) is MAX5050GP, the 2-pin of the MAX5050GP is grounded, and the 3-pin of the MAX5050GP is + 5V.
4. A blood pressure sensing circuit for a medical device according to claim 3, wherein the RC circuit (3) is a capacitor C2, and the 1 pin of the MAX5050GP is connected to one end of the capacitor C2.
5. The blood pressure detecting circuit for medical equipment according to claim 4, wherein said first amplifying circuit (4) comprises a micro power operational amplifier MAX4472, a resistor R3-resistor R5, a resistor R7-resistor R8 and a capacitor C3-capacitor C4, wherein 3 pins of said micro power operational amplifier MAX4472 are connected to the other end of capacitor C2, 4 pins of said micro power operational amplifier MAX4472 are connected to +5V, 11 pins of said micro power operational amplifier MAX4472 are connected to ground, 1 pin of said micro power operational amplifier MAX4472 is connected to its 2 pin in parallel with resistor R7, 1 pin of said micro power operational amplifier MAX4472 is connected to ground with capacitor C3, 2 pins of said micro power operational amplifier MAX4472 are connected to series with resistor R8 and capacitor C4, the other end of said capacitor C4 is connected to ground, said resistor R3 is connected to series resistor R4, the other end of said resistor R4 is connected to ground, and the other end of said resistor R3 is connected to +5V + 3, the pin 3 of the micro power consumption operational amplifier MAX4472 is connected with one end of a resistor R5, and the other end of the resistor R5 is connected with a node between a resistor R3 and a resistor R4.
6. The blood pressure detection circuit for the medical equipment as claimed in claim 5, wherein the pulse conversion circuit (6) comprises a nanometer power comparator MAX9028, a capacitor C1, a resistor R1, a resistor R2 and a resistor R6, wherein pins 2 and 4 of the nanometer power comparator MAX9028 are both grounded, pin 6 of the nanometer power comparator MAX9028 is connected with +5V, pin 1 of the nanometer power comparator MAX9028 is respectively connected with a resistor R1 and a capacitor C1 in series, the other end of the capacitor C1 is connected with pin 1 of a micro power consumption operational amplifier MAX4472, the other end of the resistor R1 is grounded, pin 5 of the nanometer power comparator MAX9028 is connected with a resistor R2 in series, the other end of the resistor R2 is connected with +5V, pin 3 of the nanometer power comparator MAX 28 is connected with a resistor R6 in series, and the other end of the resistor R6 is connected with + 5V.
7. The blood pressure detection circuit for medical equipment according to claim 6, wherein the first potentiometer (7) is a potentiometer VR1, one end of the potentiometer VR1 is connected with the 3-pin of the nano-power comparator MAX9028, and the other end and the input end of the potentiometer VR1 are both grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062858.0A CN112826464B (en) | 2021-01-18 | 2021-01-18 | Blood pressure detection circuit for medical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110062858.0A CN112826464B (en) | 2021-01-18 | 2021-01-18 | Blood pressure detection circuit for medical equipment |
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| CN112826464A true CN112826464A (en) | 2021-05-25 |
| CN112826464B CN112826464B (en) | 2024-04-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103948377A (en) * | 2014-05-20 | 2014-07-30 | 福州大学 | Portable wireless vital sign monitor |
| CN203736185U (en) * | 2014-03-11 | 2014-07-30 | 天创聚合科技（上海）有限公司 | Blood pressure detecting device with function of cardiovascular function detection |
| CN106691419A (en) * | 2015-08-22 | 2017-05-24 | 由国峰 | Portable electronic hematomanometer |
| CN211381576U (en) * | 2019-12-30 | 2020-09-01 | 深圳市老郎中电子有限公司 | Intelligent electronic tourniquet |
-
2021
- 2021-01-18 CN CN202110062858.0A patent/CN112826464B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203736185U (en) * | 2014-03-11 | 2014-07-30 | 天创聚合科技（上海）有限公司 | Blood pressure detecting device with function of cardiovascular function detection |
| CN103948377A (en) * | 2014-05-20 | 2014-07-30 | 福州大学 | Portable wireless vital sign monitor |
| CN106691419A (en) * | 2015-08-22 | 2017-05-24 | 由国峰 | Portable electronic hematomanometer |
| CN211381576U (en) * | 2019-12-30 | 2020-09-01 | 深圳市老郎中电子有限公司 | Intelligent electronic tourniquet |
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| Publication number | Publication date |
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| CN112826464B (en) | 2024-04-12 |
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Effective date of registration: 20240321 Address after: 707, 708, 709, 7th Floor, Building 1, No. 21 Xidaqiao Road, Miyun District, Beijing, 101500 Applicant after: Beijing Everbright Yike Technology Co.,Ltd. Country or region after: China Address before: Room 1502, 15 / F, building B, Beiwei International Center, No.1 Chuangzhi Road, Jianye District, Nanjing City, Jiangsu Province, 210000 Applicant before: Zha Hongmei Country or region before: China |
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