CN103908725A - Electric control breathing machine or anesthesia machine proportional valve based automatic calibration method - Google Patents
Electric control breathing machine or anesthesia machine proportional valve based automatic calibration method Download PDFInfo
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- CN103908725A CN103908725A CN201210592201.6A CN201210592201A CN103908725A CN 103908725 A CN103908725 A CN 103908725A CN 201210592201 A CN201210592201 A CN 201210592201A CN 103908725 A CN103908725 A CN 103908725A
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Abstract
The invention discloses an electric control breathing machine or anesthesia machine large drift diameter proportional valve based automatic calibration method. The electric control breathing machine or anesthesia machine large drift diameter proportional valve based automatic calibration method comprises step S00, entering into an automatic calibration mode; step S10, presetting N target pressure values which need to be calibrated; step S20, determining preset target pressure values which needs to be calibrated; step S30, performing ventilation on an air channel and monitoring the pressure of the air channel; step S40, obtaining the current voltage value Vn of a proportional valve and a control pressure value Pn of the air channel when the pressure of the air channel reaches the current preset target pressure value and is stabilized, storing the current voltage value Vn and the control pressure value Pn in a memory and ending the measurement of the current preset target pressure value; step S50, judging whether measurement of the preset target pressure values is achieved or not, executing step S60 if yes and executing the step S20 otherwise; step S60, obtaining the relation between voltage values and control pressure values through curve fitting according to the voltage value Vn and the control pressure value Pn. According to the electric control breathing machine or anesthesia machine large drift diameter proportional valve based automatic calibration method, the accurate control can be performed on the flow rate and the pressure and the control algorithm is simple, easy to implement and high in control accuracy.
Description
Technical field
The present invention relates to respirator or anesthetic machine field, more specifically, relate to a kind of automatic Verification method based on electric electricing breathing machine or anesthetic machine proportioning valve, especially large latus rectum proportioning valve.
Background technology
For existing turbine respirator, mostly there is no the air-breathing proportioning valve of large latus rectum.If but need the precisely flow velocity of control turbine respirator, must there is large latus rectum proportioning valve, because the flow velocity that conventional proportioning valve is exported in low pressure is on the low side, can not meet the air-breathing requirement of patient.Therefore, large latus rectum proportioning valve is the critical component that flow velocity is precisely controlled, and adopts large latus rectum proportioning valve electric electricing breathing machine to need the aperture of real-time control ratio valve, could realize flow speed control accurately.
As medical breathing machine, the performance of the machine that must ensure respiration just can reach good therapeutic effect.For the respirator that adopts turbine system, flow speed control is relatively complicated, even in the situation that there is no large latus rectum proportioning valve, under identical rotating speed, different airway pressures can be exported different flow velocitys, if increase large latus rectum proportioning valve in system, because the flow velocity of large latus rectum proportioning valve output can be subject to the impact of airway pressure, therefore must carry out verification to large latus rectum proportioning valve, find the relation of controlling Voltage-output and pressure, and realize the control to flow velocity by adjusting pressure.But in prior art not calculating voltage output and pressure be related to Method for Accurate Calculation.
Based on foregoing description, need the relational approach of wanting a kind of accurate calculating voltage output and pressure badly, thereby reach the accurate control to flow velocity and pressure, and control algolithm to be simple to operate, easily realizes, control accuracy is high, has good clinical experiment effect.
Summary of the invention
For solving the above problem, the object of the present invention is to provide a kind of automatic Verification method based on electric electricing breathing machine or anesthetic machine proportioning valve, especially large latus rectum proportioning valve, with the relational approach of accurate calculating voltage output and pressure, thereby reach the accurate control to flow velocity and pressure, and control algolithm is simple to operate, easily realize, control accuracy is high.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Based on an automatic Verification method for electric electricing breathing machine or anesthetic machine proportioning valve, especially large latus rectum proportioning valve, at least comprise the following steps:
Step S00, respirator or anesthetic machine enter automatic Verification pattern;
Step S10, default N the target pressure value that needs verification, described N is greater than 1 positive integer;
Step S20, control unit are determined the current preset target pressure value that needs verification;
Step S30, simulated pressure control model, described control unit is ventilated to air flue according to predeterminated frequency, and monitors described airway pressure by checkout gear;
Step S40, when described airway pressure reach described current preset target pressure value and stable after, described control unit obtains the controlled pressure value Pn of the current magnitude of voltage Vn of described proportioning valve and described air flue, be stored to memorizer, and finish the measurement of described current preset target pressure value, wherein n is the positive integer between 1 to N;
Step S50, judging unit have judged whether the measurement of all goal-selling force value, if so, perform step S60, if not, continue execution step S20;
Step S60, according to the magnitude of voltage Vn of stored a N proportioning valve and controlled pressure value Pn, obtained the relation between magnitude of voltage and the controlled pressure value of described proportioning valve by curve fitting by data processing unit.
As preferably, described proportioning valve is large latus rectum proportioning valve.
Further, described large latus rectum proportioning valve is under 60cmH2O pressure, to export the proportioning valve that flow velocity is not less than 180L/min.
In step S40, comprise the following steps:
Step S41, the default number of times M that needs measurement, described M is greater than 1 positive integer;
Step S42, described control unit are determined the number of times m that needs at present test, and wherein m is the positive integer between 1 to M;
Step S43, described control unit obtain the current voltage value Vnm of proportioning valve and the current control pressure value Pnm of described air flue for the m time;
Step S44, described judging unit judge whether measured number of times m reaches default M time, if not yet reached M time, performs step S42, otherwise, execution step S45;
The meansigma methods Vn of the magnitude of voltage of the proportioning valve after step S45, described data processing unit computation and measurement M time and with it the average value P n of corresponding controlled pressure value.
As preferably, described M is the natural number between 3 to 15.
As preferably, in step S10, N is 12.
As preferably, in step S10, first aim pressure is 5cmH2O, and last goal pressure is 60cmH2O, and differs 5cmH2O between every two target pressure value.
As preferably, in step S30, the described predeterminated frequency that air flue is ventilated is 10 beats/min.
As preferably, in step S60, described data processing unit adopts method of least square to carry out matching, calculates controlled pressure and controls the relation between magnitude of voltage.
As preferably, described control unit according to described relational application in described respirator or anesthetic machine are controlled.
A kind of respirator or anesthetic machine, when inlet valve is carried out to verification, use the proportioning valve described in above any one, the automatic Verification method of especially large latus rectum proportioning valve.
Beneficial effect of the present invention is, because the present invention is by the magnitude of voltage V of the proportioning valve of the multiple target pressure value of measurement and actual controlled pressure P, adopt again afterwards method of least square to carry out matching, find the relation of P and V, thereby reach the accurate control to flow velocity and pressure, so this control algolithm is simple to operate, easily realize, control accuracy is high, has good clinical experiment effect.Because the target pressure value of setting is many, i.e. verification is counted many, and count many class values of lower measurement P and V of each verification, finally calculates the meansigma methodss of many group measured values, so check results is very accurate.
Brief description of the drawings
Fig. 1 is the automatic Verification method flow diagram of large latus rectum proportioning valve provided by the invention;
Fig. 2 is the flow chart of the current value that records every group of target pressure value provided by the invention and actual controlled pressure.
Detailed description of the invention
Further illustrate technical scheme of the present invention below by detailed description of the invention.
For existing turbine respirator, because the flow velocity that conventional proportioning valve is exported in low pressure is on the low side, can not meet the air-breathing requirement of patient.If need precisely to control the flow velocity of turbine respirator, must there is large latus rectum proportioning valve, the performance parameter of large latus rectum proportioning valve of the present invention is the flow velocity that output is not less than 180L/min under 60cmH2O pressure.And adopt large latus rectum proportioning valve electric electricing breathing machine to need the aperture of real-time control ratio valve, could realize flow speed control accurately.For the respirator that adopts turbine system, flow speed control is relatively complicated, even in the situation that there is no large latus rectum proportioning valve, under identical rotating speed, different airway pressures can be exported different flow velocitys, if increase large latus rectum proportioning valve in system, because the flow velocity of large latus rectum proportioning valve output can be subject to the impact of airway pressure, therefore must carry out verification to large latus rectum proportioning valve, find the relation of controlling Voltage-output and pressure, and realize the control to flow velocity by adjusting pressure.
Fig. 1 is the automatic Verification method flow diagram of respirator provided by the invention or anesthetic machine proportioning valve, especially large latus rectum proportioning valve.As shown in Figure 1, the automatic Verification method of this kind based on electric electricing breathing machine proportioning valve, especially large latus rectum proportioning valve, comprises the following steps:
Step S00, respirator or anesthetic machine enter automatic Verification pattern.
Step S10, default 12 target pressure value of control unit.
As preferred embodiment, it is 5cmH2O that wherein first aim pressure is set in the present embodiment, and last goal pressure is 60cmH2O, and differs as 5cmH2O between every adjacent two target pressure value.Certainly, those skilled in the art hold is intelligiblely, the value differing between number, first aim pressure, last goal pressure and adjacent two target pressure value of target pressure value all can change, and those skilled in the art can be set as other value according to practical situation.
Step S20, control unit are determined the current preset target pressure value that needs verification.
Step S30, simulated pressure control model, be that simulated pressure control model is ventilated to air flue, according to the characterisitic parameter of the large latus rectum proportioning valve of acquiescence, described control unit is ventilated to air flue according to predeterminated frequency, the goal pressure of ventilation is 5cmH2O, the described predeterminated frequency that air flue is ventilated is 10 beats/min, can certainly get other frequency.And monitor described airway pressure by checkout gear.
Step S40, when described airway pressure reach described current preset target pressure value and stable after, described control unit obtains the controlled pressure value Pn of the current magnitude of voltage Vn of described proportioning valve and described air flue, be stored to memorizer, and finish the measurement of described current preset target pressure value, wherein n is the positive integer between 1 to N.
Step S50, judging unit have judged whether the measurement of all goal-selling force value, if, perform step S60, if not, continue execution step S20, continue to record successively in order the magnitude of voltage V of the proportioning valve under remaining target pressure value and actual controlled pressure P, until goal pressure is 60cmH2O, measure the magnitude of voltage Vn of the proportioning valve under last goal pressure and actual controlled pressure Pn.
Step S60, according to the controlled pressure value Pn in the N group magnitude of voltage Vn of stored proportioning valve and air flue, i.e. V1 to V
n, P1 to P
n, obtained the relation between magnitude of voltage and the controlled pressure value of described proportioning valve by curve fitting by data processing unit.In the present embodiment, data processing unit adopts method of least square to carry out matching, calculates controlled pressure P and controls the relation between magnitude of voltage V, realizes the accurate verification of comparative example valve.
After above-mentioned automatic Verification step completes, described control unit is controlled the operation of described respirator or anesthetic machine according to described relation.
Fig. 2 is the detail flowchart of the current value that records every group of target pressure value provided by the invention and actual controlled pressure.This flow process comprises the following steps:
Step S41, the default number of times M that needs measurement, described M is greater than 1 positive integer.In the present embodiment, described M can be the natural number between 3 to 15, and preferred value is 5.
Step S42, described control unit are determined the number of times m that needs at present test, and wherein m is the positive integer between 1 to M.
Step S43, described control unit obtain the current voltage value Vnm of proportioning valve and the current control pressure value Pnm of described air flue for the m time.
Step S44, described judging unit judge whether measured number of times m reaches default M time, if not yet reached M time, performs step S42, otherwise, execution step S45.
The meansigma methods Vn of the magnitude of voltage of the proportioning valve after step S45, described data processing unit computation and measurement M time and with it the average value P n of corresponding controlled pressure value.
In the present embodiment, frequency when simulated pressure control model is ventilated to air flue can be also other value, and this depends on concrete operational circumstances.
In the present embodiment, the continuous measurement number of times of the magnitude of voltage V of the proportioning valve of each target pressure value and actual controlled pressure P can be also other value, calculate afterwards the meansigma methods of all measurement results, those skilled in the art can set it according to actual accuracy requirement again.
Automatic Verification method based on the large latus rectum proportioning valve of electric electricing breathing machine of the present invention, can be applied to anesthetic machine etc. needs comparative example valve to carry out on the equipment of verification.
Know-why of the present invention has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, within these modes all will fall into protection scope of the present invention.
Claims (10)
1. the automatic Verification method based on electric electricing breathing machine or anesthetic machine proportioning valve, is characterized in that, at least comprises the following steps:
Step S00, respirator or anesthetic machine enter automatic Verification pattern;
Step S10, default N the target pressure value that needs verification, described N is greater than 1 positive integer;
Step S20, control unit are determined the current preset target pressure value that needs verification;
Step S30, simulated pressure control model, described control unit is ventilated to air flue according to predeterminated frequency, and monitors described airway pressure by checkout gear;
Step S40, when described airway pressure reach described current preset target pressure value and stable after, described control unit obtains the controlled pressure value Pn of the current magnitude of voltage Vn of described proportioning valve and described air flue, be stored to memorizer, and finish the measurement of described current preset target pressure value, wherein n is the positive integer between 1 to N;
Step S50, judging unit judge whether to complete the measurement of all goal-selling force value, if so, perform step S60, if not, continue execution step S20;
Step S60, data processing unit, according to the N group magnitude of voltage of stored described proportioning valve and the controlled pressure value of described air flue, obtain the relation between the described magnitude of voltage of described proportioning valve and the described controlled pressure value of described air flue by curve fitting.
2. method according to claim 1, is characterized in that, described proportioning valve is large latus rectum proportioning valve, and described large latus rectum proportioning valve is under 60cmH2O pressure, to export the proportioning valve that flow velocity is not less than 180L/min.
3. method according to claim 1, is characterized in that, in step S40, comprises the following steps:
Step S41, the default number of times M that needs measurement, described M is greater than 1 positive integer;
Step S42, described control unit are determined the number of times m that needs at present test, and wherein m is the positive integer between 1 to M;
Step S43, described control unit obtain the current voltage value Vnm of proportioning valve and the current control pressure value Pnm of described air flue for the m time;
Step S44, described judging unit judge whether measured number of times m reaches default M time, if not yet reached M time, performs step S42, otherwise, execution step S45;
The meansigma methods Vn of the magnitude of voltage of the proportioning valve after step S45, described data processing unit computation and measurement M time and with it the average value P n of corresponding controlled pressure value.
4. method according to claim 3, is characterized in that, M is the natural number between 3 to 15, is preferably 5.
5. method according to claim 1, is characterized in that, in step S10, N is 12.
6. method according to claim 5, is characterized in that, first goal-selling force value is 5cmH2O, and last goal-selling force value is 60cmH2O, and differs 5cmH2O between every two goal-selling force value.
7. method according to claim 1, is characterized in that, in step S30, the described predeterminated frequency that air flue is ventilated is 10 beats/min.
8. method according to claim 1, is characterized in that, in step S60, described data processing unit adopts method of least square to carry out matching, calculates controlled pressure and controls the relation between magnitude of voltage.
9. method according to claim 8, is characterized in that, described control unit is controlled described respirator or anesthetic machine according to described relation.
10. respirator or an anesthetic machine, is characterized in that: when inlet valve is carried out to verification, right to use requires the method described in any one in 1 to 9.
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| CN201210592201.6A CN103908725A (en) | 2012-12-29 | 2012-12-29 | Electric control breathing machine or anesthesia machine proportional valve based automatic calibration method |
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| CN201210592201.6A CN103908725A (en) | 2012-12-29 | 2012-12-29 | Electric control breathing machine or anesthesia machine proportional valve based automatic calibration method |
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| CN106880896A (en) * | 2015-12-15 | 2017-06-23 | 北京谊安医疗系统股份有限公司 | A kind of method of Anesthesia machine IP valves self adaptation calibration |
| CN108498930A (en) * | 2018-03-31 | 2018-09-07 | 湖南明康中锦医疗科技发展有限公司 | The flow control methods of respiratory assistance apparatus proportioning valve |
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