CN212996420U - Nasal respiration monitoring device - Google Patents
Nasal respiration monitoring device Download PDFInfo
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- CN212996420U CN212996420U CN202021136680.7U CN202021136680U CN212996420U CN 212996420 U CN212996420 U CN 212996420U CN 202021136680 U CN202021136680 U CN 202021136680U CN 212996420 U CN212996420 U CN 212996420U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 230000010352 nasal breathing Effects 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 53
- 230000006698 induction Effects 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 12
- 230000001939 inductive effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000036387 respiratory rate Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036391 respiratory frequency Effects 0.000 description 2
- 206010035664 Pneumonia Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 206010006451 bronchitis Diseases 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a nasal respiration monitoring devices, which comprises a housin, the inductive pick-up, power module, processing circuit, microcontroller and display screen, power module, processing circuit and microcontroller are integrated inside the casing, the display screen sets up at the housing face, the inductive pick-up passes through the electric wire and is connected with the inside processing circuit of casing, power module and inductive pick-up, processing circuit, microcontroller and display screen are connected, in order to be its power supply, the inductive pick-up is pressure sensor, processing circuit amplifies the signal of pressure sensor output, transmit to microcontroller after the filtering, transmit to the display screen after microcontroller handles the signal. The utility model discloses a pressure sensor breathes the nasal part and detects, and it can avoid the external environment to breathe the influence that causes to the patient for pressure sensor can accurately detect patient's breathing, thereby improves and detects the rate of accuracy.
Description
Technical Field
The utility model relates to a respiratory monitoring technology field especially relates to a nasal respiration monitoring devices.
Background
Breathing is one of the most important features of human survival, and respiratory frequency abnormalities are the visual manifestations of many diseases, such as: bronchitis, pneumonia, tuberculosis, etc., so that the determination of respiratory rate is clinically important data. In clinic, the physician usually counts the fluctuation of the thorax or abdomen, but the critical patient may have an insignificant fluctuation and is not easy to judge. The method on the textbook is to place cotton at the air outlet of the nose of a patient, and medical staff determines the breathing times of the patient by counting the fluttering times of the cotton. This manual counting method is time-consuming and labor-consuming, and the counting accuracy is not high. Chinese patent document 201520223899.3 provides a thermal method respiratory rate measuring apparatu, it adopts the thermal element to detect, but when external environment was close with human temperature, the change of breathing gas stream temperature was very little to thermal element itself can not take place the resistance change when the patient has breathing, and whole measuring apparatu just so can't accurately detect patient's breathing, and medical personnel also can't learn the true respiratory rate of patient to the influence. Therefore, in order to enhance the sensitivity and accuracy of breath detection, it is important to provide a new nasal respiration monitoring device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to overcome the defects, the nasal respiration monitoring device is provided to improve the accuracy of respiratory frequency monitoring.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a nasal respiration monitoring devices, which comprises a housin, inductive transducer, power module, processing circuit, microcontroller and display screen, power module, processing circuit and microcontroller are integrated inside the casing, the display screen sets up on the casing surface, inductive transducer passes through the electric wire and is connected with the inside processing circuit of casing, power module and inductive transducer, processing circuit, microcontroller and display screen are connected, in order to be its power supply, inductive transducer is pressure sensor, processing circuit enlargies the signal of pressure sensor output, transmit to microcontroller after the filtering, transmit to the display screen after microcontroller handles the signal.
Furthermore, the processing circuit comprises an amplifying circuit and a filtering circuit which are connected in sequence, the amplifying circuit performs low-noise amplification on the input signal, and the filtering circuit performs high-frequency filtering on the input signal.
Further, the amplifying circuit is used for amplifying signals transmitted by the pressure sensor and comprises resistors R1-R6, capacitors C1-C6 and a processor U1, one end of the resistor R1 is connected with the output end of the pressure sensor, the other end of the resistor R1 is connected to one end of the resistor R2 and a pin 1 of the processor U1, a pin 2 of the processor U1 is connected to one ends of the resistors R3-R4 and the capacitor C1 and then is connected with a pin 4 of the processor U1, and the other ends of the resistors R2-R3 and the capacitor C1 are grounded; the other end of the resistor R4 is connected to one end of a resistor R5, a pin 5 of the processor U1 is connected to an external voltage and then connected with one ends of capacitors C2-C3, a pin 3 of the processor U1 is connected to the external voltage and then connected with one ends of capacitors C5-C6, the other ends of the capacitors C2-C3 and the capacitors C5-C6 are all grounded, the other end of the resistor R5 is connected to one end of a resistor R6, the other end of the resistor R6 is grounded, and the other end of the resistor R5 is also used as an output end of the circuit and connected with an input end of a next-stage circuit.
The filter circuit further comprises resistors R7-R8, capacitors C7-C11 and inductors L1-L4, one end of the resistor R7 serves as an input end of the circuit and is connected with an output end of the amplifying circuit, the other end of the resistor R7 is connected to one ends of the capacitors C7-C8 and the inductor L1, the other end of the capacitor C8 is connected to one ends of the capacitors C9-C10 and the inductors L3-L4 and the other end of the inductor L2, the other end of the inductor L1 is connected to one end of the inductor L2, the other end of the capacitor C10 is connected to the other ends of the inductors L3-L4 and one ends of the capacitors C11 and the resistor R8, the other ends of the capacitors C7, the capacitors C9, the capacitors C11 and the resistor R8 are grounded, and one end of the resistor R8 serves as an output end of the circuit and is connected with a.
Since the proposal is adopted, the beneficial effects of the utility model reside in that: the problem of prior art is solved, the utility model provides a nasal respiration monitoring devices, its benefit is:
(1) the utility model discloses a pressure sensor breathes the nasal part and detects, and it can avoid the external environment to breathe the influence that causes to the patient for pressure sensor can accurately detect patient's breathing, thereby improves and detects the rate of accuracy.
(2) The utility model discloses an amplifier circuit amplifies and falls the noise to the small signal that can spread pressure sensor, avoids the noise that small signal self carried to be amplified simultaneously when enlargiing for output signal has miscellaneous signal, influences the degree of accuracy of its monitoring.
(3) The utility model discloses a processing circuit carries out a lot of filtering to the signal, avoids the signal to have high frequency and miscellaneous signal, avoids the signal in the display screen to have the peak form, influences medical personnel to the judgement of patient's breathing condition.
Drawings
Fig. 1 is a circuit block diagram of the detection device of the present invention.
Fig. 2 is a circuit diagram of the amplifying circuit of the present invention.
Fig. 3 is a circuit diagram of the filter circuit of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
A nose breathing monitoring device is disclosed, as shown in figure 1, comprising a shell, an induction sensor, a power supply module, a processing circuit, a microcontroller and a display screen, wherein the power supply module, the processing circuit and the microcontroller are integrated in the shell, the display screen is arranged on the surface of the shell, the induction sensor is connected with the processing circuit in the shell through an electric wire, the induction sensor adopts a pressure sensor, the pressure sensor adopts a pressure sensor commonly used in medical detection and can be purchased in the market, therefore, the specific structure of the pressure sensor is not described any more, the pressure sensor can be placed at the nose end of a patient, the gas exhaled by the nose end of the patient can cause pressure to the pressure sensor, the pressure sensor can generate signal change, the signal is transmitted to the processing circuit for processing so as to convert the pressure signal into an intuitive electric signal, the processing circuit amplifies the signal, the microcontroller and the display screen are connected with the processing circuit through an, The filtering is transmitted to the microcontroller, and the signal is processed by the microcontroller and then transmitted to the display screen, so that medical personnel can visually see the breathing condition of the patient. The power supply module supplies power to the induction sensor, the processing circuit and the display screen, and the model number of the power supply module is FH15-150D12S 5. The power module is connected with a switch arranged on the shell through an electric wire, so that medical personnel can control the whole monitoring device through the switch on the shell conveniently. The microcontroller model is STM32F 373.
Specifically, because some patients breathe weakly, the signals sensed by the pressure sensor are very small, and if the electrical signals are directly transmitted to the processing circuit for amplification in a very weak condition, the noise carried by the electrical signals can be amplified infinitely, thereby affecting the output quality of the signals. Therefore the utility model discloses carry out redesign to processing circuit, it can be stable enlarge the signal, and can reduce the noise in the processing procedure, guarantee that the signal of last transmission to the display screen is correct, reduce the interference that exists in the signal.
As shown in fig. 2-3, the processing circuit includes an amplifying circuit and a filter circuit, the amplifying circuit is used for amplifying signals transmitted by the pressure sensor, and includes resistors R1-R6, capacitors C1-C6 and a processor U1, one end of the resistor R1 is connected to an output end of the pressure sensor, the other end of the resistor R1 is connected to one end of the resistor R2 and a pin 1 of the processor U1, a pin 2 of the processor U1 is connected to one ends of the resistors R3-R4 and the capacitor C1 and then connected to a pin 4 thereof, and the other ends of the resistors R2-R3 and the capacitor C1 are both grounded; the other end of the resistor R4 is connected to one end of a resistor R5, a pin 5 of the processor U1 is connected to an external voltage and then connected with one ends of capacitors C2-C3, a pin 3 of the processor U1 is connected to the external voltage and then connected with one ends of capacitors C5-C6, the other ends of the capacitors C2-C3 and the capacitors C5-C6 are all grounded, the other end of the resistor R5 is connected to one end of a resistor R6, the other end of the resistor R6 is grounded, and the other end of the resistor R5 is also used as an output end of the circuit and connected with an input end of a next-stage circuit.
The filter circuit comprises resistors R7-R8, capacitors C7-C11 and inductors L1-L4, one end of a resistor R7 is used as an input end of the circuit to be connected with an output end of the amplifying circuit, the other end of a resistor R7 is connected to one ends of capacitors C7-C8 and an inductor L1, the other end of a capacitor C8 is connected to one ends of capacitors C9-C10 and inductors L3-L4 and the other end of an inductor L2, the other end of an inductor L1 is connected to one end of an inductor L2, the other end of a capacitor C10 is connected to the other ends of the inductors L3-L4 and one ends of the capacitors C11 and the resistor R8, the other ends of the capacitors C7, the capacitors C9, the capacitors C11 and the resistor R8 are grounded, and one end of the resistor R8 is also used as an output end of the circuit to be.
Specifically, when the breathing of the patient needs to be monitored, the medical staff firstly places the pressure sensor on the nose of the patient and then opens the switch on the shell, so that the whole monitoring device starts to operate. The pressure sensor will operate and will receive the pressure from the patient's nasal exhalations and convert it to an electrical signal that is transmitted through resistor R1 to the amplifier circuit. The resistor R3 and the capacitor C1 form a filter circuit, offset voltage of the input end of the processor U1 can be reduced, and common mode voltage existing in the circuit is reduced. Wherein, resistance R2 ground connection, it can filter the noise that the input small signal brought for the signal through in the treater U1 is the low noise, avoids at the in-process of enlargiing, can be with the noise amplification that small signal self carried, thereby reduces output signal's quality. The resistor R4 and the capacitor C4 also serve as filtering elements, temperature drift generated in the working process of the processor U1 can be avoided, and normal working of the processor U1 and amplification can be guaranteed. The amplified signal is output through a resistor R5, wherein the resistor R6 is grounded, which can filter the spurious signal in the output signal, so as to avoid the signal output to the next stage of filter circuit carrying too many spurious signals, which leads to the signal passing through the filter circuit still carrying the spurious signal after being output.
Further, since the breath is long, i.e. the pressure sensor actually always senses the pressure, in order to make the waveform displayed on the display screen accurate, the filter circuit filters the unwanted frequency components in the output signal, so as to avoid too many false peaks on the waveform displayed on the display screen. The filter circuit adopts a low-pass filtering mode, adopts an inductance capacitor for filtering, and can filter high-frequency signals existing in output signals, so that a oscillogram is stable and accurate. Specifically, most of the input voltage of the signal entering the filter circuit drops on the capacitor, so that when the input frequency is too high, the impedance of the capacitor is lower relative to the impedance of the inductor, the voltage on the inductor drops, the final output voltage is smaller, namely, the low-frequency signal can pass, and the high-frequency signal is blocked, so that the unnecessary signal is filtered, the stability of the output signal is ensured, and the accuracy of respiration monitoring is improved.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A nasal respiration monitoring device, characterized in that: including the casing, induction sensor, power module, processing circuit, microcontroller and display screen, power module, processing circuit and microcontroller are integrated inside the casing, the display screen sets up on the casing surface, induction sensor passes through the electric wire and is connected with the inside processing circuit of casing, power module and induction sensor, processing circuit, microcontroller and display screen are connected, in order for its power supply, induction sensor is pressure sensor, processing circuit amplifies the signal of pressure sensor output, transmit to microcontroller after the filtering, transmit to the display screen after microcontroller handles the signal.
2. A nasal respiration monitoring device according to claim 1, wherein: the processing circuit comprises an amplifying circuit and a filtering circuit which are sequentially connected, the amplifying circuit is used for carrying out low-noise amplification on input signals, and the filtering circuit is used for carrying out high-frequency filtering on the input signals.
3. A nasal respiration monitoring device according to claim 2, wherein: the amplifying circuit is used for amplifying signals transmitted by the pressure sensor and comprises resistors R1-R6, capacitors C1-C6 and a processor U1, one end of a resistor R1 is connected with the output end of the pressure sensor, the other end of the resistor R1 is connected to one end of a resistor R2 and a pin 1 of the processor U1, a pin 2 of a processor U1 is connected to one ends of the resistors R3-R4 and the capacitor C1 and then connected with a pin 4 of the processor U1, and the other ends of the resistors R2-R3 and the capacitor C1 are grounded; the other end of the resistor R4 is connected to one end of a resistor R5, a pin 5 of the processor U1 is connected to an external voltage and then connected with one ends of capacitors C2-C3, a pin 3 of the processor U1 is connected to the external voltage and then connected with one ends of capacitors C5-C6, the other ends of the capacitors C2-C3 and the capacitors C5-C6 are all grounded, the other end of the resistor R5 is connected to one end of a resistor R6, the other end of the resistor R6 is grounded, and the other end of the resistor R5 is also used as an output end of the circuit and connected with an input end of a next-stage circuit.
4. A nasal respiration monitoring device according to claim 2, wherein: the filter circuit comprises resistors R7-R8, capacitors C7-C11 and inductors L1-L4, one end of a resistor R7 is used as an input end of the circuit to be connected with an output end of the amplifying circuit, the other end of a resistor R7 is connected to one ends of capacitors C7-C8 and an inductor L1, the other end of a capacitor C8 is connected to one ends of capacitors C9-C10 and inductors L3-L4 and the other end of an inductor L2, the other end of an inductor L1 is connected to one end of an inductor L2, the other end of a capacitor C10 is connected to the other ends of the inductors L3-L4 and one ends of the capacitors C11 and the resistor R8, the other ends of the capacitors C7, the capacitors C9, the capacitors C11 and the resistor R8 are grounded, and one end of the resistor R8 is also used as an output end of the circuit to be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136680.7U CN212996420U (en) | 2020-06-18 | 2020-06-18 | Nasal respiration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136680.7U CN212996420U (en) | 2020-06-18 | 2020-06-18 | Nasal respiration monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN212996420U true CN212996420U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021136680.7U Expired - Fee Related CN212996420U (en) | 2020-06-18 | 2020-06-18 | Nasal respiration monitoring device |
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|---|---|
| CN (1) | CN212996420U (en) |
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2020
- 2020-06-18 CN CN202021136680.7U patent/CN212996420U/en not_active Expired - Fee Related
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Granted publication date: 20210420 |