CN117861031A - Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method - Google Patents
Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method Download PDFInfo
- Publication number
- CN117861031A CN117861031A CN202410067286.9A CN202410067286A CN117861031A CN 117861031 A CN117861031 A CN 117861031A CN 202410067286 A CN202410067286 A CN 202410067286A CN 117861031 A CN117861031 A CN 117861031A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- pressure sensor
- gas pressure
- communicated
- connecting end
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 230000000241 respiratory effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 58
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 11
- 239000003570 air Substances 0.000 abstract description 24
- 239000012080 ambient air Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
A respiratory detection system for calibrating zero point of gas pressure sensor and a calibration method thereof are provided, which comprises a first electromagnetic valve, a second electromagnetic valve and a gas pressure sensor, wherein the first electromagnetic valve is communicated with the second electromagnetic valve through a pipeline, the second electromagnetic valve is communicated with the gas pressure sensor through a pipeline, the air inlet end of the first electromagnetic valve is communicated with a positive pressure oxygen source, a detection connecting pipe is arranged on the connecting pipe of the first electromagnetic valve and the second electromagnetic valve and is communicated with a respiratory detection port, the respiratory detection port or an ambient air pressure value can be acquired by the gas pressure sensor through alternate switching of a pulse oxygen supply electromagnetic valve and a gas pressure sensor gas circuit switching electromagnetic valve, and the ambient air pressure acquisition value is used as a zero point reference, thereby the zero point calibration can be automatically carried out, the influence of zero point drift condition is avoided, and the accuracy of respiratory detection is improved.
Description
Technical Field
The invention relates to a respiratory detection system and a calibration method for calibrating a zero point of a gas pressure sensor, in particular to a respiratory detection system and a calibration method capable of automatically calibrating the zero point of the gas pressure sensor.
Background
The current respiration detection scheme in the product fields of pulse oxygen supply oxygenerator, respirator and the like carries out zero calibration on a respiration detection gas pressure sensor before delivery, and automatic zero calibration cannot be carried out in subsequent operation, so that the high-stability gas pressure sensor needs to be configured for achieving detection precision, the cost is high, the problem of zero drift still exists, and the respiration detection is inaccurate and poor in experience is caused.
Disclosure of Invention
The invention aims to provide a respiratory detection system and a detection method for calibrating zero point of a gas pressure sensor, aiming at the defects or the shortcomings in the prior art, and the gas pressure sensor can acquire respiratory detection port or ambient air pressure value by alternately switching a pulse oxygen supply electromagnetic valve and a gas pressure sensor air path switching electromagnetic valve, and takes the ambient air pressure acquisition value as a zero point reference, so that zero point calibration can be automatically carried out.
In order to achieve the above purpose, the invention adopts the following technical scheme: the device comprises a first electromagnetic valve 1, a second electromagnetic valve 2 and a gas pressure sensor 3, wherein the first electromagnetic valve 1 is communicated with the second electromagnetic valve 2 through a pipeline, the second electromagnetic valve 2 is communicated with the gas pressure sensor 3 through a pipeline, the air inlet end of the first electromagnetic valve 1 is communicated with a positive pressure oxygen source 4, and a detection connecting pipe 5 is arranged on a connecting pipe of the first electromagnetic valve 1 and the second electromagnetic valve 2 and is communicated with a respiration detection port.
Further, the first electromagnetic valve 1 is a pulse oxygen supply electromagnetic valve.
Further, the second electromagnetic valve 2 is a gas circuit switching electromagnetic valve of a gas pressure sensor.
Further, a first connecting end 2-1, a second connecting end 2-2 and a third connecting end 2-3 are arranged on the second electromagnetic valve 2, a connecting pipeline of the first connecting end 2-1 is communicated with the first electromagnetic valve 1, and a connecting pipeline of the second connecting end 2-2 is communicated with the gas pressure sensor 3.
Further, the first connection end 2-1 and the second connection end 2-2 are controlled to be on-off through a circuit.
Further, the third connecting end 2-3 and the second connecting end 2-2 are controlled to be on-off through a circuit, and the third connecting end 2-3 is communicated with the external environment.
The working principle of the invention is as follows: when the second electromagnetic valve 2 is electrified, the third connecting end 2-3 is communicated with the second connecting end 2-2, the external ambient air pressure is communicated with the air pressure sensor 3, at the moment, pressure data displayed by the air pressure sensor 3 are collected as zero reference, when the first electromagnetic valve 1 is powered off, the positive pressure oxygen source 4 is disconnected from the air passage of the air pressure sensor at the breath detection port, the second electromagnetic valve 2 is powered off in the state, the first connecting end 2-1 is communicated with the second connecting end 2-2, at the moment, the air pressure sensor 3 is communicated with the air pressure sensor at the breath detection port, the detected value is the pressure value of the air pressure sensor at the breath detection port, when the set vacuum value is not reached, the oxygen supply equipment does not supply oxygen, when the pressure value changes, the set vacuum value is reached, the first electromagnetic valve 1 is electrified, the passage is opened, the positive pressure oxygen source 4 is communicated with the air pressure sensor at the breath detection port, when the zero point of the air pressure sensor needs to be calibrated, the second electromagnetic valve 2 is started, the third connecting end 2-3 is communicated with the second connecting end 2-2, the air pressure sensor 3 is disconnected from the air pressure sensor at the breath detection port, the air pressure sensor 3 is disconnected from the breath detection port and is communicated with the air pressure sensor at the external air pressure sensor at the zero point, the zero point can be calibrated again, the zero point is again, the zero point can be set, the external ambient air pressure can be calibrated, the zero value is again, the ambient air pressure can be calibrated, and the zero value is again can be displayed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a system framework of the present invention;
fig. 2 is a schematic diagram of a frame structure of a second solenoid valve 2 according to the present invention;
FIG. 3 is a schematic representation of a zero calibration flow in the present invention;
FIG. 4 is a schematic diagram of a breath detection flow in accordance with the present invention;
fig. 5 is a schematic diagram of a zero calibration flow for breath detection conditions in the present invention.
Reference numerals illustrate: the device comprises a first electromagnetic valve 1, a second electromagnetic valve 2, a gas pressure sensor 3, a positive pressure oxygen source 4, a detection connecting pipe 5, an air inlet pipe 6, a first connecting end 2-1, a second connecting end 2-2 and a third connecting end 2-3.
Detailed Description
Referring to fig. 1-5, the technical scheme adopted in the specific embodiment is as follows: the respiratory detection system for calibrating the zero point of a gas pressure sensor comprises a first electromagnetic valve 1, a second electromagnetic valve 2 and a gas pressure sensor 3, wherein the first electromagnetic valve 1 is a pulse oxygen supply electromagnetic valve in the embodiment, and the pulse oxygen supply electromagnetic valve is used for controlling the supply on-off of oxygen;
the second electromagnetic valve 2 is a gas pressure sensor gas circuit switching electromagnetic valve, and the gas pressure sensor gas circuit switching electromagnetic valve is used for switching internal passages, so that switching of passages at a breath detection end and an external environment end is realized, and acquisition of different data is realized to determine and calibrate zero references;
more specifically, the first electromagnetic valve 1 is communicated with the second electromagnetic valve 2 through a pipeline, two connecting ports and a pipeline are arranged on the first electromagnetic valve, and the air outlet end is connected with the second electromagnetic valve;
the second electromagnetic valve 2 is communicated with the gas pressure sensor 3 through a pipeline, and is used as a main switching electromagnetic valve to be communicated with the gas pressure sensor, so that the gas pressure sensor can acquire different data and takes one acquired value as a zero reference, and zero calibration is performed;
the air inlet end of the first electromagnetic valve 1 is communicated with the positive pressure oxygen source 4, a detection connecting pipe 5 is arranged on the connecting pipeline of the first electromagnetic valve 1 and the second electromagnetic valve 2 and is communicated with a respiration detection port, the respiration detection port is an oxygen supply end, it can be understood that the respiration detection port can be a nasal suction pipe or a mask, the respiration of a user can cause the change of air pressure, and the acquired data at the position is real-time pressure data and is also a condition value for controlling the on-off of oxygen;
when the second electromagnetic valve control passage is communicated with the external environment and the gas pressure sensor, the acquired value is used as a zero reference value, and the passage can be conveniently opened in the use process to perform re-acquisition and setting of the zero reference value, so that the accuracy of breath detection is effectively improved.
More specifically, the second electromagnetic valve 2 is provided with a first connecting end 2-1, a second connecting end 2-2 and a third connecting end 2-3, the first connecting end 2-1 connecting pipeline is communicated with the first electromagnetic valve 1, the first connecting end 2-1 and the second connecting end 2-2 are controlled to be on-off by a circuit, the second connecting end 2-2 connecting pipeline is communicated with the gas pressure sensor 3, the third connecting end 2-3 and the second connecting end 2-2 are controlled to be on-off by a circuit, and the third connecting end 2-3 is communicated with the external environment, in the embodiment, the third connecting end is an air inlet arranged on the second electromagnetic valve and is directly communicated with the external environment, and an air inlet pipe 6 can be optionally arranged at the third connecting end to prevent external dust from being directly attached to the third connecting port by air inlet pipe;
three connecting ports are arranged in the second electromagnetic valve, wherein the first connecting end is communicated with the second connecting end, the respiration detecting end and the gas pressure sensor can be communicated, respiratory data are detected, when the second connecting end is switched to be communicated with the third connecting end, the gas pressure sensor is communicated with the external environment, acquired data are used as zero reference values, zero calibration of the gas pressure sensor is carried out, one switching of the internal passage through the second electromagnetic valve is carried out, automatic zero calibration of the gas pressure sensor is achieved, the influence of zero drift problem is avoided, and the detection accuracy is improved.
There is also provided in this embodiment a method of calibrating a zero point of a gas pressure sensor, comprising the steps of:
s1, starting a second electromagnetic valve 2, so that a second connecting end 2-2 is communicated with a third connecting end 2-3;
s2, reading the value of the external ambient pressure acquired by the gas pressure sensor 3, and recording the value as a zero reference; referring to the path a shown in fig. 3, when the second connection end is communicated with the third connection end, the gas pressure sensor is communicated with the external environment, and external environment pressure data can be used as a zero reference;
s3, closing the second electromagnetic valve 2 to enable the first connecting end 2-1 to be communicated with the second connecting end 2-2, reading the value of the detection breathing end acquired by the gas pressure sensor 3, and comparing the value with a zero reference value to obtain an accurate detection value; referring to the path b shown in fig. 4, after the first connecting end is communicated with the second connecting end, the gas pressure sensor is communicated with the detection respiratory end, so that the detection respiratory end data can be collected for detection, and the detection respiratory end data is compared with the zero reference value to obtain a detection result;
in this embodiment, the zero calibration operation is performed not only in the state of the first electromagnetic valve 1, but also in the oxygen supplying process in the starting state of the first electromagnetic valve 1, as shown in the path c and d in fig. 5, in the starting state of the first electromagnetic valve, the positive pressure oxygen source supplies oxygen to the breath detection end, at this time, the second electromagnetic valve is closed, that is, the external environment is communicated with the gas pressure sensor, so that the real-time zero calibration operation can be performed in the oxygen supplying state, and further the breath detection step can be performed after the zero calibration, thereby ensuring the accuracy of the breath detection.
After the technical scheme is adopted, the invention has the beneficial effects that: through the alternating switch of pulse oxygen supply solenoid valve and gas pressure sensor gas circuit switching solenoid valve, gas pressure sensor can gather and breathe detection mouth or ambient air pressure numerical value, regard ambient air pressure collection numerical value as the zero point benchmark to can carry out the zero point calibration voluntarily, carry out the degree of accuracy that does not receive the zero point drift condition to promote breathe detection.
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (7)
1. A respiratory detection system for calibrating a zero point of a gas pressure sensor, comprising: the device comprises a first electromagnetic valve (1), a second electromagnetic valve (2) and a gas pressure sensor (3), wherein the first electromagnetic valve (1) is communicated with the second electromagnetic valve (2) through a pipeline, the second electromagnetic valve (2) is communicated with the gas pressure sensor (3) through a pipeline, the air inlet end of the first electromagnetic valve (1) is communicated with a positive pressure oxygen source (4), and a detection connecting pipe (5) is arranged on a connecting pipe of the first electromagnetic valve (1) and the second electromagnetic valve (2) and is communicated with a respiration detection port.
2. A respiratory detection system for calibrating a zero point of a gas pressure sensor according to claim 1, wherein: the first electromagnetic valve (1) is a pulse oxygen supply electromagnetic valve.
3. A respiratory detection system for calibrating a zero point of a gas pressure sensor according to claim 1, wherein: the second electromagnetic valve (2) is a gas circuit switching electromagnetic valve of a gas pressure sensor.
4. A respiratory detection system for calibrating a zero point of a gas pressure sensor according to claim 1, wherein: the second electromagnetic valve (2) is provided with a first connecting end (2-1), a second connecting end (2-2) and a third connecting end (2-3), wherein a connecting pipeline of the first connecting end (2-1) is communicated with the first electromagnetic valve (1), and a connecting pipeline of the second connecting end (2-2) is communicated with the gas pressure sensor (3).
5. A respiratory detection system for calibrating a zero point of a gas pressure sensor according to claim 4, wherein: the first connecting end (2-1) and the second connecting end (2-2) are controlled to be on-off through a circuit.
6. A respiratory detection system for calibrating a zero point of a gas pressure sensor according to claim 4, wherein: the third connecting end (2-3) and the second connecting end (2-2) are controlled to be on-off through a circuit, and the third connecting end (2-3) is communicated with the external environment.
7. A calibration method for calibrating the zero point of a gas pressure sensor, comprising the steps of:
s1, starting a second electromagnetic valve (2) to enable a second connecting end (2-2) to be communicated with a third connecting end (2-3);
s2, reading an external ambient pressure value acquired by the gas pressure sensor (3), and recording the value as a zero reference;
s3, closing the second electromagnetic valve (2) to enable the first connecting end (2-1) to be communicated with the second connecting end (2-2), reading the detection respiratory end value acquired by the gas pressure sensor (3), and comparing the detection respiratory end value with the zero reference value to obtain an accurate detection value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410067286.9A CN117861031A (en) | 2024-01-16 | 2024-01-16 | Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410067286.9A CN117861031A (en) | 2024-01-16 | 2024-01-16 | Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117861031A true CN117861031A (en) | 2024-04-12 |
Family
ID=90580838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410067286.9A Pending CN117861031A (en) | 2024-01-16 | 2024-01-16 | Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117861031A (en) |
-
2024
- 2024-01-16 CN CN202410067286.9A patent/CN117861031A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5072737A (en) | Method and apparatus for metabolic monitoring | |
| CN101288791B (en) | Anesthesia apparatus respiration apparatus and marking method of its flow sensor | |
| US10905843B2 (en) | Humidification of respiratory gases | |
| CN109718453A (en) | Breathing Suppotion equipment | |
| CN106492321B (en) | A kind of ventilator | |
| WO2008064062A2 (en) | Premature infant side-stream respiratory gas monitoring sensor | |
| CN206837209U (en) | A kind of lung ventilator | |
| CN103800012A (en) | Method and device for stabilizing sampling gas flow in respiratory monitoring | |
| CN101543655A (en) | Method for detecting breathing state during pulse oxygen supply | |
| CN112023206A (en) | Artificial respirator with lung function analysis function | |
| CN218391088U (en) | Gas detection system of many respiratory tracts | |
| CN219104927U (en) | Expiration nitric oxide detector | |
| CN117861031A (en) | Respiratory detection system for calibrating zero point of gas pressure sensor and calibration method | |
| CN108318374A (en) | Mask respiration indices resistance measurement system and its working method | |
| CN206837206U (en) | A kind of lung ventilator | |
| CN106289889B (en) | A kind of counterpart and nose expiration molecule sample simultaneously and analytical equipment | |
| CN212722815U (en) | Detection gas circuit module for exhaled NO analyzer | |
| CN110074894B (en) | Ventilation system of anesthesia respirator and anesthesia respirator | |
| CN207991986U (en) | Mask respiration indices resistance measurement system | |
| CN106730219B (en) | Intelligent rehabilitation ventilator | |
| CN219982871U (en) | Measuring device and adapter for fusion of gas concentration and respiratory mechanics parameters | |
| CN209230684U (en) | A kind of wall oxygen inhalator, vacuum extractor detection device | |
| CN220877464U (en) | Pulse simulation respiration instrument | |
| CN218035914U (en) | End-expiratory collecting device | |
| CN217187327U (en) | Breathing equipment air supply system using single sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |