CN103736184B - A kind of home ventilator flow transducer error correction method - Google Patents
A kind of home ventilator flow transducer error correction method Download PDFInfo
- Publication number
- CN103736184B CN103736184B CN201310683894.4A CN201310683894A CN103736184B CN 103736184 B CN103736184 B CN 103736184B CN 201310683894 A CN201310683894 A CN 201310683894A CN 103736184 B CN103736184 B CN 103736184B
- Authority
- CN
- China
- Prior art keywords
- current
- flow
- error correction
- correction method
- state
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims description 16
- 230000003434 inspiratory effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Flow Control (AREA)
Abstract
The invention discloses a kind of home ventilator flow transducer error correction method, comprise the following steps: step S01, flow transducer gathers flow signal, carries out signal processing to described flow signal; Step S02, according to the flow signal of step S01 process, judges the mode of operation that respirator is current; Step S03, initializes described mode of operation, enters described mode of operation control mode; Step S04, detects and breathes mark, judge that current breathing state is suction condition or expiration state; Step S05, according to the result that described step S04 judges, performs respective handling.Compared with prior art, the present invention judges respirator current operation mode according to respirator flow signal, and uses PID to control, and user comfort level is high.
Description
Technical field
The present invention relates to the respirator technology in medical appliance field, particularly relate to a kind of home ventilator flow transducer error correction method.
Background technology
The effusion meter used in respirator is generally differential pressure flow sensor, home ventilator range of flow is little, differential pressure flowmeter cost is comparatively moderate, inside due to differential pressure flowmeter is exactly pressure difference transducer, so asking in software algorithm during flow is exactly use output voltage to go out differential pressure with the corresponding derivation of equation of pressure reduction, then derive flow by differential pressure.
In prior art, need as Use of respirator is last manually to arrange mode of operation, respirator enters corresponding mode of operation, but in use, the breathing state of user is vicissitudinous for user, be not specific one to the mode of operation of respirator, comfortableness and safety are not high.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, providing can a kind of error correction method judging the home ventilator flow transducer of respirator current operation mode according to respirator flow signal.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of home ventilator flow transducer error correction method, comprises the following steps:
Step S01, flow transducer gathers flow signal, carries out signal processing to described flow signal;
Step S02, according to the flow signal of step S01 process, judges the mode of operation that respirator is current;
Step S03, initializes described mode of operation, enters described mode of operation control mode;
Step S04, detects and breathes mark, judge that current breathing state is suction condition or expiration state;
Step S05, according to the result that described step S04 judges, performs following steps:
If current state is expiration state, detect and whether have inspiration trigger, present flow rate and the average discharge in the sampling period, adjust parameter sum and compare, if described present flow rate is less than average discharge, adjustment parameter sum in the sampling period, then current breathing state remains unchanged, otherwise, expiration mark is converted to air-breathing mark, respirator blower fan is waited for exhaling and is triggered and start counting, the control objectives pressure of PID is set to IPAP, enters PID and control and send controlled quentity controlled variable;
If current state is suction condition, more current inspiratory duration and standard inlet time, if current inspiratory duration is greater than the standard inlet time, then the direct redirect flag bit of breathing state is expiration state, continues to run; If current inspiratory duration is not more than the standard inlet time, then present flow rate and the average discharge in the sampling period, the difference that adjusts parameter are compared, if present flow rate is less than the difference of average discharge in the sampling period, adjustment parameter, current breathing state is converted to expiration state, inspiration trigger waited for by respirator blower fan, and PID control objectives pressure is set to EPAP, otherwise, current breathing state remains unchanged, and directly enters PID and controls.
The process of step S01 flow signal comprises the following steps:
Steps A, flow transducer gathers flow signal, meanwhile, and processor output reference voltage, described reference voltage calculates acquired signal and reference voltage difference with the described flow signal collected after the first ratio follow circuit in subtractor;
Step B, described acquired signal and reference voltage difference pass through the second ratio follow circuit, filtering and pressure limiting, the flow signal after output processing; Through twice ratio follow circuit, need the flow signal adjustment detected in the manageable scope of microprocessor.
Step C, the flow signal that described step B exports is input to microprocessor.
More preferably, reference voltage is 2.5V.
More preferably, in step S05, the sampling period is 300ms.
More preferably, adjusting parameter in step S05 is 100ml/s.
Compared with prior art, beneficial effect of the present invention has:
First, process flow signal of the present invention, judges the mode of operation that respirator is current, and the mode of operation of intellectual determination user needs, and enters relevant work pattern, improves comfortableness and the safety of respirator.
Further, in the error correction method control procedure of respirator flow transducer of the present invention, employ PID and control error correction, dynamic calculation flow, comfort level is high.
Further, reference voltage of the present invention be in 2.5V, step S05 the sampling period be that to adjust parameter in 300ms, step S05 be 100ml/s, above-mentioned parameters is long-term clinical trials analytical data, can the comfort of maximized raising user.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention.
Fig. 2 is step S01 flow signal process chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of error correction method of home ventilator flow transducer, comprises the following steps:
Step S01, flow transducer gathers flow signal, carries out signal processing to described flow signal;
Step S02, according to the flow signal of step S01 process, judges the mode of operation that respirator is current;
Step S03, initializes described mode of operation, enters described mode of operation control mode;
Step S04, detects and breathes mark, judge that current breathing state is suction condition or expiration state;
Step S05, according to the result that described step S04 judges, performs following steps:
If current state is expiration state, detect and whether have inspiration trigger, present flow rate and the average discharge in the sampling period, adjust parameter sum and compare, if described present flow rate is less than average discharge, adjustment parameter sum in the sampling period, then current breathing state remains unchanged, otherwise, expiration mark is converted to air-breathing mark, respirator blower fan is waited for exhaling and is triggered and start counting, the control objectives pressure of PID is set to IPAP, enters PID and control and send controlled quentity controlled variable;
If current state is suction condition, more current inspiratory duration and standard inlet time, if current inspiratory duration is greater than the standard inlet time, then the direct redirect flag bit of breathing state is expiration state, continues to run; If current inspiratory duration is not more than the standard inlet time, then present flow rate and the average discharge in the sampling period, the difference that adjusts parameter are compared, if present flow rate is less than the difference of average discharge in the sampling period, adjustment parameter, current breathing state is converted to expiration state, inspiration trigger waited for by respirator blower fan, and PID control objectives pressure is set to EPAP, otherwise, current breathing state remains unchanged, and directly enters PID and controls.
As shown in Figure 2, the process of step S01 flow signal comprises the following steps:
Steps A, flow transducer gathers flow signal, meanwhile, and processor output reference voltage, described reference voltage calculates acquired signal and reference voltage difference with the described flow signal collected after the first ratio follow circuit in subtractor;
Step B, described acquired signal and reference voltage difference pass through the second ratio follow circuit, filtering and pressure limiting, the flow signal after output processing;
Step C, the flow signal that described step B exports is input to microprocessor.
More preferably, reference voltage is 2.5V.
More preferably, in step S05, the sampling period is 300ms.
More preferably, adjusting parameter in step S05 is 100ml/s.
More preferably, the first ratio follow circuit and the second ratio follow circuit are none-inverting input circuits
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a home ventilator flow transducer error correction method, is characterized in that, comprises the following steps:
Step S01, flow transducer gathers flow signal, carries out signal processing to described flow signal;
Step S02, according to the flow signal of step S01 process, judges the mode of operation that respirator is current;
Step S03, initializes described mode of operation, enters described mode of operation control mode;
Step S04, detects and breathes mark, judge that current breathing state is suction condition or expiration state;
Step S05, according to the result that described step S04 judges, performs following steps:
If current state is expiration state, detect and whether have inspiration trigger, present flow rate and the average discharge in the sampling period, adjust parameter sum and compare, if described present flow rate is less than average discharge, adjustment parameter sum in the sampling period, then current breathing state remains unchanged, otherwise, expiration mark is converted to air-breathing mark, respirator blower fan is waited for exhaling and is triggered and start counting, the control objectives pressure of PID is set to IPAP, enters PID and control and send controlled quentity controlled variable;
If current state is suction condition, more current inspiratory duration and standard inlet time, if current inspiratory duration is greater than the standard inlet time, then the direct redirect flag bit of breathing state is expiration state, continues to run; If current inspiratory duration is not more than the standard inlet time, then present flow rate and the average discharge in the sampling period, the difference that adjusts parameter are compared, if present flow rate is less than the difference of average discharge in the sampling period, adjustment parameter, current breathing state is converted to expiration state, inspiration trigger waited for by respirator blower fan, and PID control objectives pressure is set to EPAP, otherwise, current breathing state remains unchanged, and directly enters PID and controls.
2. a kind of home ventilator flow transducer error correction method according to claim 1, is characterized in that: the process of described step S01 flow signal comprises the following steps:
Steps A, flow transducer gathers flow signal, meanwhile, and processor output reference voltage, described reference voltage calculates acquired signal and reference voltage difference with the described flow signal collected after the first ratio follow circuit in subtractor;
Step B, described acquired signal and reference voltage difference pass through the second ratio follow circuit, filtering and pressure limiting, the flow signal after output processing;
Step C, the flow signal that described step B exports is input to microprocessor.
3. a kind of home ventilator flow transducer error correction method according to claim 2, is characterized in that: described reference voltage is 2.5V.
4. a kind of home ventilator flow transducer error correction method according to claim 1, is characterized in that: in described step S05, the sampling period is 300ms.
5. a kind of home ventilator flow transducer error correction method according to claim 1, is characterized in that: adjusting parameter in described step S05 is 100ml/s.
6. a kind of home ventilator flow transducer error correction method according to claim 2, is characterized in that: described first ratio follow circuit and the second ratio follow circuit are none-inverting input circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683894.4A CN103736184B (en) | 2013-12-13 | 2013-12-13 | A kind of home ventilator flow transducer error correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683894.4A CN103736184B (en) | 2013-12-13 | 2013-12-13 | A kind of home ventilator flow transducer error correction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103736184A CN103736184A (en) | 2014-04-23 |
| CN103736184B true CN103736184B (en) | 2016-01-13 |
Family
ID=50493293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310683894.4A Active CN103736184B (en) | 2013-12-13 | 2013-12-13 | A kind of home ventilator flow transducer error correction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103736184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115887841B (en) * | 2022-08-19 | 2024-08-20 | 湖南万脉医疗科技有限公司 | Breathing machine flow control method based on sleep state and sleep breathing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543655A (en) * | 2009-04-29 | 2009-09-30 | 江苏万泰科技股份有限公司 | Method for detecting breathing state during pulse oxygen supply |
| CN102266614A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Inspiratory trigger control method and device, and breathing machine |
| CN102397607A (en) * | 2010-09-07 | 2012-04-04 | 北京航天长峰股份有限公司 | Pressure adjusting method for anesthesia machine and breathing machine controlled by flow and pressure together |
| CN103182121A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Pressure trigger control method for breathing machine |
| CN103185630A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | System and method for checking sensor in breathing machine |
| CN103330979A (en) * | 2013-05-30 | 2013-10-02 | 中山大学 | Breathing machine control method and breathing machine apply control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4948707B2 (en) * | 1999-02-25 | 2012-06-06 | ローズマウント インコーポレイテッド | Diagnostic flow measurement |
| JP5183924B2 (en) * | 2003-01-30 | 2013-04-17 | コンピュメディクス・リミテッド | Algorithm for automatic positive air pressure titration |
| US6988994B2 (en) * | 2003-08-14 | 2006-01-24 | New York University | Positive airway pressure system and method for treatment of sleeping disorder in patient |
-
2013
- 2013-12-13 CN CN201310683894.4A patent/CN103736184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543655A (en) * | 2009-04-29 | 2009-09-30 | 江苏万泰科技股份有限公司 | Method for detecting breathing state during pulse oxygen supply |
| CN102397607A (en) * | 2010-09-07 | 2012-04-04 | 北京航天长峰股份有限公司 | Pressure adjusting method for anesthesia machine and breathing machine controlled by flow and pressure together |
| CN102266614A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Inspiratory trigger control method and device, and breathing machine |
| CN103182121A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Pressure trigger control method for breathing machine |
| CN103185630A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | System and method for checking sensor in breathing machine |
| CN103330979A (en) * | 2013-05-30 | 2013-10-02 | 中山大学 | Breathing machine control method and breathing machine apply control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103736184A (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6927985B2 (en) | Humidification of respiratory gas | |
| EP2401016B1 (en) | Patient-ventilator dyssynchrony detection | |
| CN102727976B (en) | Determine the leakage during CPAP therapy | |
| AU2013263072B2 (en) | Control of pressure for breathing comfort | |
| JP6165632B2 (en) | System and method for providing forced inspiration-expiration to a subject | |
| CN103608062A (en) | Breathing apparatus and method for support ventilation | |
| US10898671B2 (en) | Method and device for the adaptive regulation of a positive end-expiratory pressure (PEEP) | |
| US9757532B2 (en) | Detection of patient interface disconnect for controlling continuous positive airway pressure therapy | |
| CN215961621U (en) | A tidal volume detection device for a bi-level ventilator | |
| CN110975089A (en) | Tidal volume calculation method and device, storage medium and breathing machine | |
| CN102895746A (en) | Auxiliary respiring equipment | |
| CN105771047A (en) | Method for adjusting positive pressure of breathing machine airway | |
| CN105999490A (en) | Method for adjusting pressure of draught fan of respirator | |
| CN102397609A (en) | Volume-guaranteed pressure-limited ventilation method for anesthesia machine and respirator | |
| US20190175857A1 (en) | Bilevel respiratory therapy system, controller and method | |
| JP6384965B2 (en) | Method and apparatus for increasing expiratory airflow | |
| EP3007753B1 (en) | Synchronous airway pressure release ventilation | |
| EP3383464B1 (en) | Method of co2 measurement during non-invasive ventilation | |
| CN103736184B (en) | A kind of home ventilator flow transducer error correction method | |
| CN112999478A (en) | Adaptive tidal volume calculation method and device and breathing machine | |
| CN105457135B (en) | Ventilator pressure method of adjustment, device and ventilator | |
| JP6574117B2 (en) | Respiratory gas supply system | |
| CN106823085B (en) | A pressure control method to ensure tidal volume of ventilator | |
| CN112999479A (en) | Breathing machine inspiration triggering method and application | |
| CN110975090A (en) | Breathing machine air leakage calculation method and device, storage medium and computer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |