CN107297007B - Method and device for measuring operating parameters of breathing machine - Google Patents
Method and device for measuring operating parameters of breathing machine Download PDFInfo
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- CN107297007B CN107297007B CN201610237589.6A CN201610237589A CN107297007B CN 107297007 B CN107297007 B CN 107297007B CN 201610237589 A CN201610237589 A CN 201610237589A CN 107297007 B CN107297007 B CN 107297007B
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Abstract
The invention discloses a method for measuring operating parameters of a breathing machine, which comprises the following steps: measuring ventilator static pressure data in a static pressure detection mode and measuring ventilator dynamic pressure data in a dynamic pressure detection mode; determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine; and calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine. The invention also discloses a device for measuring the operating parameters of the breathing machine. By adopting the scheme of the invention, data measurement, acquisition and data processing are integrated, and recording and data processing are carried out for the personnel needing to be tested, so that recording or processing errors caused by human subjective errors are avoided, and meanwhile, the data processing time and the calculation complexity are reduced to the greatest extent.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a method and a device for measuring operating parameters of a breathing machine.
Background
At present, the static pressure stability and the dynamic pressure stability of the pressure of a patient connector of a breathing machine are measured, or a measurer actively records measurement data on time, or an automatic data acquisition device acquires and stores the data and then processes the data; the static pressure stability measurement needs to continuously record data for 8 hours, calculate the maximum positive pressure deviation and the maximum negative pressure deviation, and the dynamic pressure stability measurement needs to calculate the maximum positive pressure deviation and the maximum negative pressure deviation in each breathing cycle in the measurement time. If a measuring device which can not store data is used, a person is required to actively record the data, and the defects that the data recorded by the person is not necessarily true maximum positive pressure deviation and maximum negative pressure deviation, and the data is required to be actively recorded for a long time, so that fatigue is easily caused, and errors are easily recorded; if the measuring device capable of directly storing data is adopted, the higher the sampling frequency is, the more the acquired data is, and the more the data needs to be processed, so that the method solves the problem of artificial subjective error in the acquired data, but greatly increases the data processing time and the complexity of calculation.
Disclosure of Invention
The invention mainly aims to provide a method and a device for measuring operating parameters of a breathing machine, aiming at avoiding recording or processing errors caused by artificial subjective errors and reducing data processing time and computational complexity.
In order to achieve the above object, the present invention provides a method for measuring an operating parameter of a ventilator, comprising the steps of:
measuring ventilator static pressure data in a static pressure detection mode and measuring ventilator dynamic pressure data in a dynamic pressure detection mode;
determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine;
and calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine.
Preferably, the measuring the ventilator static pressure data in the static pressure detection mode includes:
setting static pressure detection parameters and a static pressure stability threshold;
detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode;
the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stabilization threshold comprises a positive static pressure stabilization threshold and a negative static pressure stabilization threshold.
Preferably, the measuring of the dynamic pressure data of the ventilator in the dynamic pressure detection mode comprises:
setting dynamic pressure detection parameters and dynamic pressure stability thresholds;
detecting dynamic pressure data of the breathing machine according to the dynamic pressure detection parameters in a dynamic pressure detection mode;
the dynamic pressure detection parameters comprise dynamic output pressure, dynamic pressure data acquisition time, dynamic pressure data acquisition interval time and tidal volume.
Preferably, the determining of ventilator static pressure stability from the ventilator static pressure data comprises:
calculating the average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
determining the maximum value and the minimum value of the deviation of the average value of the acquired static pressure data of the breathing machine and the static output pressure at each time;
determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
Preferably, the step of determining a ventilator dynamic pressure stability from the ventilator dynamic pressure data comprises:
determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
comparing the maximum value and the minimum value with the dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine;
and comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
In addition, in order to achieve the above object, the present invention further provides a device for measuring an operating parameter of a ventilator, wherein the device for measuring an operating parameter of a ventilator comprises a microcontroller, a function selection module, a pressure acquisition module, and a communication module, wherein:
the function selection module is used for receiving a mode selection instruction and switching to a corresponding detection mode;
the microcontroller is used for controlling the pressure acquisition module to acquire pressure data in different detection modes;
the pressure acquisition module is used for measuring the static pressure data of the breathing machine in a static pressure detection mode and measuring the dynamic pressure data of the breathing machine in a dynamic pressure detection mode;
the microcontroller is further used for determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine;
the communication module is used for transmitting calibration parameters to the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine so as to calibrate the operation parameters of the breathing machine.
Preferably, the pressure acquisition module is specifically configured to:
setting static pressure detection parameters and a static pressure stability threshold;
detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode;
the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stabilization threshold comprises a positive static pressure stabilization threshold and a negative static pressure stabilization threshold.
Preferably, the pressure acquisition module is specifically configured to:
setting dynamic pressure detection parameters and dynamic pressure stability thresholds;
detecting dynamic pressure data of the breathing machine according to the dynamic pressure detection parameters in a dynamic pressure detection mode;
the dynamic pressure detection parameters comprise dynamic output pressure, dynamic pressure data acquisition time, dynamic pressure data acquisition interval time and tidal volume.
Preferably, the microcontroller is specifically configured to:
calculating the average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
determining the maximum value and the minimum value of the deviation of the average value of the acquired static pressure data of the breathing machine and the static output pressure at each time;
determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
Preferably, the microcontroller is specifically configured to:
determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
comparing the maximum value and the minimum value with the dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine;
and comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
The method selects a corresponding pressure detection mode through a measuring device, measures the static pressure data of the breathing machine in the static pressure detection mode, and measures the dynamic pressure data of the breathing machine in the dynamic pressure detection mode; determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine; and calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine. By adopting the measuring method of the embodiment, data measurement, data acquisition and data processing are integrated, and recording and data processing are performed for personnel needing to be tested, so that recording or processing errors caused by human subjective errors are avoided, and meanwhile, the data processing time and the calculation complexity are reduced to the greatest extent.
Drawings
FIG. 1 is a schematic flow chart of a first embodiment of a method for measuring operating parameters of a ventilator according to the present invention;
FIG. 2 is a detailed flowchart of the step of measuring the static pressure data of the ventilator in the static pressure detection mode in step S10 in FIG. 1;
FIG. 3 is a detailed flowchart of the step of measuring dynamic pressure data of the ventilator in the dynamic pressure detection mode in step S10 in FIG. 1;
FIG. 4 is a detailed flowchart of the step of determining the stability of the static pressure of the ventilator according to the static pressure data in step S20 in FIG. 1;
FIG. 5 is a detailed flow chart of the step of determining the dynamic pressure stability of the ventilator in step S20 according to the dynamic pressure data of the ventilator in FIG. 1;
fig. 6 is a schematic structural diagram of a first embodiment of the device for measuring operating parameters of a ventilator according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a method for measuring operating parameters of a breathing machine.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of a method for measuring operating parameters of a ventilator according to the present invention.
In an embodiment of the present invention, a method for measuring an operating parameter of a ventilator includes:
step S10, measuring the static pressure data of the breathing machine in a static pressure detection mode and measuring the dynamic pressure data of the breathing machine in a dynamic pressure detection mode;
step S20, determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine;
and step S30, calibrating the operation parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine.
The method for measuring the operating parameters of the breathing machine is used for measuring the stability of the operating parameters of the breathing machine, the static pressure stability and the dynamic pressure stability of the breathing machine are measured and analyzed through the external measuring device connected with the breathing machine, and the measuring device can realize the integrated operation of data measurement, data acquisition and data processing. The measurement device comprises a microcontroller, a function selection module, a pressure acquisition module and a communication module, wherein during measurement, static pressure data and dynamic pressure data of a breathing machine are respectively acquired, firstly, a static pressure detection mode or a dynamic pressure detection mode is selected through the function selection module according to a mode selection instruction, and then the microcontroller controls the pressure acquisition module for acquiring the pressure data to measure the static pressure data and the dynamic pressure data in corresponding modes; after the static pressure data and the dynamic pressure data are measured, respectively determining the static pressure stability and the dynamic pressure stability of the breathing machine according to the measured pressure data and a preset comparison threshold value or a preset standard value.
If the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine do not accord with the corresponding standards, the operation parameters of the breathing machine need to be calibrated according to the standards, specifically, the operation parameters of the breathing machine can be adjusted by the microcontroller according to the static pressure stability of the breathing machine, the dynamic pressure stability of the breathing machine and a preset comparison threshold value or standard value to obtain calibration parameters, and the calibration parameters are transmitted to the breathing machine through the communication module of the measuring device of the embodiment, so that the breathing machine adjusts the operation parameters according to the calibration parameters, and finally the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine can meet the preset comparison threshold value or standard value.
In the embodiment, a corresponding pressure detection mode is selected through a measuring device, the static pressure data of the breathing machine is measured in the static pressure detection mode, and the dynamic pressure data of the breathing machine is measured in the dynamic pressure detection mode; determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine; and calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine. By adopting the measuring method of the embodiment, data measurement, data acquisition and data processing are integrated, and recording and data processing are performed for personnel needing to be tested, so that recording or processing errors caused by human subjective errors are avoided, and meanwhile, the data processing time and the calculation complexity are reduced to the greatest extent.
Referring to fig. 2, fig. 2 is a detailed flow chart of the step of measuring the static pressure data of the ventilator in the static pressure detection mode in step S10 in fig. 1.
In the above embodiment, the step of measuring the static pressure data of the ventilator in the static pressure detection mode specifically includes:
step S101, setting static pressure detection parameters and a static pressure stability threshold; the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stability threshold comprises a positive static pressure stability threshold and a negative static pressure stability threshold;
and S102, detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode.
When testing static pressure data, firstly setting static pressure detection parameters and static pressure stability threshold values, wherein the static pressure detection parameters comprise: static output pressure, which in this embodiment can be denoted as Pset(ii) a The static pressure data acquisition time, which can be denoted as T in this embodiments(ii) a The interval between static pressure data acquisitions, which in this embodiment may be denoted as Ta. The static pressure stabilization threshold includes: the positive static pressure stability threshold, which can be described as
Negative static pressure stability threshold, which can be recorded as
Through the function selection module, a static pressure detection mode is selected according to a command of a user, static pressure data of the breathing machine is detected according to the set static pressure detection parameters, when the detection is carried out, the microcontroller controls the measuring device to automatically close the flow regulating valve, so that the measuring device meets the requirement of a measurement standard, then the data of the pressure sensor is read, and pressure acquisition is controlledThe collection module collects interval time T according to static pressure dataaThe static pressure data is collected, and the collected static pressure data can be stored by a data storage module of the measuring device, and in this embodiment, the collected static pressure data can be stored in an SD card or other storage media.
Referring to fig. 3, fig. 3 is a detailed flowchart of the step of measuring dynamic pressure data of the ventilator in the dynamic pressure detection mode in step S10 in fig. 1.
In the above embodiment, the step of measuring dynamic pressure data of the ventilator in the dynamic pressure detection mode specifically includes:
step S111, setting dynamic pressure detection parameters and dynamic pressure stability thresholds; the dynamic pressure detection parameters comprise dynamic output pressure, dynamic pressure data acquisition time, dynamic pressure data acquisition interval time and tidal volume;
and step S112, detecting dynamic pressure data of the breathing machine according to the dynamic pressure detection parameters in a dynamic pressure detection mode.
When testing static pressure data, firstly setting dynamic pressure detection parameters and a dynamic pressure stability threshold; wherein the dynamic pressure detection parameters include: dynamic output pressure, which in this embodiment can be denoted as PsetThe dynamic output pressure can be set to be dynamic single-level output pressure or dynamic double-level output pressure according to different referenced standards; dynamic pressure data acquisition time, which may be denoted as T in this embodiments(ii) a The dynamic pressure data acquisition interval time, which may be denoted as f in this embodiment; tidal volume, which can be denoted as V in this embodimentt. The dynamic pressure stabilization threshold may be denoted as Pw。
Through the function selection module, a dynamic pressure detection mode is selected according to a command of a user, dynamic pressure data of the respirator is detected according to the set dynamic pressure detection parameters, when the detection is carried out, the microcontroller controls the flow regulating valve of the measuring device to be fully opened, so that the measuring device meets the requirements of measurement standards, then the data of the pressure sensor is read, and the pressure acquisition module is controlled to acquire intervals according to the dynamic pressure dataInter TaThe dynamic pressure data is collected, and the collected static pressure data can be stored by a data storage module of the measuring device, which in this embodiment can be stored in an SD card or other storage media.
Referring to fig. 4, fig. 4 is a detailed flowchart of the step of determining the stability of the static pressure of the ventilator according to the static pressure data in step S20 in fig. 1.
In the above embodiment, the step of determining the stability of the static pressure of the ventilator according to the static pressure data of the ventilator specifically includes:
step S201, calculating an average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
step S202, calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
step S203, determining the maximum value and the minimum value in the deviation between the average value of the acquired static pressure data of the breathing machine and the static output pressure;
step S204, determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and S205, determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
After acquiring the static pressure data, determining the static pressure stability of the ventilator, specifically:
the first step is as follows: calculating the interval time T between the acquisition of data according to said static pressureaAverage value of the acquired static pressure data of the breathing machine, namely, the average value of the static pressure data acquired from the first time to the last time is calculated, and the total number of the static pressure data is Ts*fsThen the average of the static pressure data is:
wherein,represents the average of the static pressure data over the nth time interval,
and
respectively representing the first and last acquired static pressure data, T, in the Nth time intervala×fsRepresenting the total number of static pressure data for the nth time interval.
The second step is that: calculating the deviation of the average value of the static pressure data of the breathing machine acquired at each time and the static output pressure, namely calculating
And PsetThe deviation of (a) is determined,
the third step: determining an average of each acquired ventilator static pressure data
With said static output pressure PsetOf the deviation of (1), i.e. finding Δ P1To
Maximum Max Δ P and minimum Min Δ P in (1).
The fourth step: determining static maximum positive pressure deviation and static state according to the maximum value Max delta P and the minimum value Min delta PMaximum negative pressure deviation, and comparing the static maximum positive pressure deviation with the positive static pressure stability threshold
And comparing the static maximum negative pressure deviation with the negative static pressure stability threshold
The fifth step: according to the static maximum positive pressure deviation and the positive static pressure stability threshold value
And the static maximum negative pressure deviation and the negative static pressure stability threshold
And (4) determining the static pressure stability of the breathing machine according to the comparison result.
If both Max Δ P and Min Δ P are greater than the static output pressure PsetThen the maximum deviation pressure for the static pressure stability of the ventilator is Max Δ P, and then Max Δ P and Max Δ P are compared
If Max Δ P is less than
Determining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement; if both Max Δ P and Min Δ P are less than the static output pressure PsetThen the maximum deviation pressure for static pressure stability is Min Δ P, and then Min Δ P and Min Δ P are compared
If Min Δ P is greater than
Determining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement; also, if Max Δ P is greater than static output pressure PsetMin Δ P is less than static output pressure PsetThen Max Δ P is compared with
By comparison, if Max Δ P is less than
Determining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement, and comparing Min delta P with theBy comparison, if Min Δ P is greater than
And determining that the static pressure stability of the breathing machine to be detected meets the requirement, otherwise, not meeting the requirement.
Referring to fig. 5, fig. 5 is a detailed flowchart of the step of determining the dynamic pressure stability of the ventilator according to the dynamic pressure data of the ventilator in step S20 in fig. 1.
In the above embodiment, the step of determining the dynamic pressure stability of the ventilator according to the dynamic pressure data of the ventilator specifically includes:
step S211, determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
step S212, comparing the maximum value and the minimum value with dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
step S213, calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the acquired dynamic pressure data of the breathing machine each time;
and step S214, comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
After acquiring the dynamic pressure data, starting to determine the dynamic pressure stability of the ventilator, specifically:
the first step is as follows: and determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time f to obtain the maximum value and the minimum value of the dynamic pressure data in each breathing period.
The second step is that: the maximum value and the minimum value are compared with the dynamic output pressure PsetAnd comparing to determine the maximum positive pressure deviation and the maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time.
The third step: calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine to obtain
The fourth step: comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result; that is to say, the
And a dynamic pressure stability threshold PwAnd comparing to determine whether the dynamic pressure stability of the breathing machine to be tested meets the requirement.
The invention also provides a device for measuring the operating parameters of the breathing machine.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a first embodiment of the device for measuring the operating parameters of the ventilator according to the present invention.
In an embodiment of the present invention, the apparatus for measuring an operating parameter of a ventilator includes a microcontroller 10, a function selection module 20, a pressure acquisition module 30, and a communication module 40, wherein:
the function selecting module 20 is configured to receive a mode selecting instruction and switch to a corresponding detection mode;
the microcontroller 10 is configured to control the pressure acquisition module 30 to acquire pressure data in different detection modes;
the pressure acquisition module 30 is configured to measure static pressure data of the ventilator in a static pressure detection mode, and measure dynamic pressure data of the ventilator in a dynamic pressure detection mode;
the microcontroller 10 is further configured to determine a ventilator static pressure stability from the ventilator static pressure data and determine a ventilator dynamic pressure stability from the ventilator dynamic pressure data;
the communication module 40 is configured to transmit a calibration parameter to the ventilator according to the static pressure stability of the ventilator and the dynamic pressure stability of the ventilator, so as to calibrate the operating parameter of the ventilator.
The method for measuring the operating parameters of the breathing machine is used for measuring the stability of the operating parameters of the breathing machine, the static pressure stability and the dynamic pressure stability of the breathing machine are measured and analyzed through the external measuring device connected with the breathing machine, and the measuring device can realize the integrated operation of data measurement, data acquisition and data processing. The measuring device comprises a microcontroller 10, a function selection module 20, a pressure acquisition module 30 and a communication module 40, wherein during measurement, static pressure data and dynamic pressure data of a breathing machine are respectively acquired, firstly, a static pressure detection mode or a dynamic pressure detection mode is selected by the function selection module 20 according to a mode selection instruction, and then the microcontroller 10 controls the pressure acquisition module 30 for acquiring the pressure data to measure the static pressure data and the dynamic pressure data in corresponding modes; after the static pressure data and the dynamic pressure data are measured, respectively determining the static pressure stability and the dynamic pressure stability of the breathing machine according to the measured pressure data and a preset comparison threshold value or a preset standard value.
If the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine do not meet the corresponding standards, the operating parameters of the breathing machine need to be calibrated according to the standards, specifically, the operating parameters of the breathing machine can be adjusted through the microcontroller 10 according to the static pressure stability of the breathing machine, the dynamic pressure stability of the breathing machine and a preset comparison threshold or standard value to obtain calibration parameters, and the calibration parameters are transmitted to the breathing machine through the communication module 40 of the measuring device in the embodiment, so that the breathing machine adjusts the operating parameters according to the calibration parameters, and finally the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine can meet the preset comparison threshold or standard value.
In the embodiment, a corresponding pressure detection mode is selected through a measuring device, the static pressure data of the breathing machine is measured in the static pressure detection mode, and the dynamic pressure data of the breathing machine is measured in the dynamic pressure detection mode; determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine; and calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine. By adopting the measuring device of the embodiment, data measurement, acquisition and data processing are integrated, and recording and data processing are performed for the personnel needing to be tested, so that recording or processing errors caused by artificial subjective errors are avoided, and meanwhile, the data processing time and the calculation complexity are reduced to the greatest extent.
In the above embodiment, the pressure acquisition module 30 is specifically configured to:
setting static pressure detection parameters and a static pressure stability threshold;
detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode;
the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stabilization threshold comprises a positive static pressure stabilization threshold and a negative static pressure stabilization threshold.
When testing static pressure data, firstly setting static pressure detection parameters and static pressure stability threshold values, wherein the static pressure detection parameters comprise: static output pressure, which in this embodiment can be denoted as Pset(ii) a The static pressure data acquisition time, which can be denoted as T in this embodiments(ii) a The interval between static pressure data acquisitions, which in this embodiment may be denoted as Ta. The static pressure stabilization threshold includes: the positive static pressure stability threshold, which can be described as
Negative static pressure stability threshold, which can be recorded as
Through the function selection module 20, the static pressure detection mode is selected according to the command of the user, the static pressure data of the breathing machine is detected according to the set static pressure detection parameters, when the detection is carried out, the microcontroller 10 controls the measuring device to automatically close the flow regulating valve, so that the measuring device meets the requirement of the measurement standard, then the data of the pressure sensor is read, and the pressure acquisition module 30 is controlled to acquire the interval time T according to the static pressure dataaThe static pressure data is collected, and the collected static pressure data can be stored by a data storage module of the measuring device, and in this embodiment, the collected static pressure data can be stored in an SD card or other storage media.
In the above embodiment, the pressure collecting module 30 is further configured to:
when testing static pressure data, firstly setting dynamic pressure detection parameters and a dynamic pressure stability threshold; wherein the dynamic pressure detection parameters include: dynamic output pressure, which in this embodiment can be denoted as PsetThe dynamic output pressure can be set to be dynamic single-level output pressure or dynamic double-level output pressure according to different referenced standards; dynamic pressure data acquisition time, which may be denoted as T in this embodiments(ii) a Dynamic pressure data acquisition Interval time, in this exampleCan be written as f; tidal volume, which can be denoted as V in this embodimentt. The dynamic pressure stabilization threshold may be denoted as Pw。
Through the function selection module 20, a dynamic pressure detection mode is selected according to a command of a user, dynamic pressure data of the respirator is detected according to the set dynamic pressure detection parameters, when the detection is carried out, the microcontroller 10 controls the flow regulating valve of the measuring device to be fully opened, so that the measuring device meets the requirements of measurement standards, then the data of the pressure sensor is read, and the pressure acquisition module 30 is controlled to acquire interval time T according to the dynamic pressure dataaThe dynamic pressure data is collected, and the collected static pressure data can be stored by a data storage module of the measuring device, which in this embodiment can be stored in an SD card or other storage media.
In the above embodiment, the microcontroller 10 is specifically configured to:
calculating the average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
determining the maximum value and the minimum value of the deviation of the average value of the acquired static pressure data of the breathing machine and the static output pressure at each time;
determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
After acquiring the static pressure data, determining the static pressure stability of the ventilator, specifically:
the first step is as follows: calculating the interval time T between the acquisition of data according to said static pressureaAverage value of the acquired static pressure data of the breathing machine, namely, the average value of the static pressure data acquired from the first time to the last time is calculated, and the total number of the static pressure data is Ts*fsThen the average of the static pressure data is:
wherein,
represents the average of the static pressure data over the nth time interval,
andrespectively representing the first and last acquired static pressure data, T, in the Nth time intervala×fsRepresenting the total number of static pressure data for the nth time interval.
The second step is that: calculating the deviation of the average value of the static pressure data of the breathing machine acquired at each time and the static output pressure, namely calculating
And PsetThe deviation of (a) is determined,
the third step: determining an average of each acquired ventilator static pressure data
With said static output pressure PsetOf the deviation of (1), i.e. finding Δ P1To
Maximum Max Δ P and minimum Min Δ P in (1).
The fourth step: determining static maximum positive pressure deviation and static maximum negative pressure deviation according to the maximum value Max delta P and the minimum value Min delta P, and comparing the static maximum positive pressure deviation with the positive static pressure stability threshold valueAnd comparing the static maximum negative pressure deviation with the negative static pressure stability threshold
The fifth step: according to the static maximum positive pressure deviation and the positive static pressure stability threshold value
And the static maximum negative pressure deviation and the negative static pressure stability threshold
And (4) determining the static pressure stability of the breathing machine according to the comparison result.
If both Max Δ P and Min Δ P are greater than the static output pressure PsetThen the maximum deviation pressure for the static pressure stability of the ventilator is Max Δ P, and then Max Δ P and Max Δ P are compared
If Max Δ P is less than
Determining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement; if both Max Δ P and Min Δ P are less than the static output pressure PsetThen the maximum deviation pressure for static pressure stability is Min Δ P, and then Min Δ P and Min Δ P are compared
If Min Δ P is greater than
Determining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement; likewise, if Max Δ P is greater than static output pressure PsetMin Δ P is less than static output pressure PsetThen Max Δ P is compared with
By comparison, if Max Δ P is less thanDetermining that the static pressure stability of the breathing machine to be tested meets the requirement, otherwise, not meeting the requirement, and comparing Min delta P with the
By comparison, if Min Δ P is greater than
And determining that the static pressure stability of the breathing machine to be detected meets the requirement, otherwise, not meeting the requirement.
In the above embodiment, the microcontroller is further configured to:
determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
comparing the maximum value and the minimum value with the dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
and comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
After acquiring the dynamic pressure data, starting to determine the dynamic pressure stability of the ventilator, specifically:
the first step is as follows: and determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time f to obtain the maximum value and the minimum value of the dynamic pressure data in each breathing period.
The second step is that: the maximum value and the minimum value are compared with the dynamic output pressure PsetAnd comparing to determine the maximum positive pressure deviation and the maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time.
The third step: calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine to obtain
The fourth step: comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result; that is to say, the
And a dynamic pressure stability threshold PwAnd comparing to determine whether the dynamic pressure stability of the breathing machine to be tested meets the requirement.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method for measuring the operating parameters of a breathing machine is characterized by comprising the following steps:
measuring ventilator static pressure data in a static pressure detection mode and measuring ventilator dynamic pressure data in a dynamic pressure detection mode;
determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine, and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine;
calibrating the operating parameters of the breathing machine according to the static pressure stability of the breathing machine and the dynamic pressure stability of the breathing machine;
the measuring ventilator static pressure data in the static pressure detection mode includes:
setting static pressure detection parameters and a static pressure stability threshold;
detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode;
the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stabilization threshold comprises a positive static pressure stabilization threshold and a negative static pressure stabilization threshold.
2. The method of measuring operational parameters of a ventilator as in claim 1, wherein said measuring ventilator dynamic pressure data in a dynamic pressure detection mode comprises:
setting dynamic pressure detection parameters and dynamic pressure stability thresholds;
detecting dynamic pressure data of the breathing machine according to the dynamic pressure detection parameters in a dynamic pressure detection mode;
the dynamic pressure detection parameters comprise dynamic output pressure, dynamic pressure data acquisition time, dynamic pressure data acquisition interval time and tidal volume.
3. The method of measuring an operating parameter of a ventilator as set forth in claim 1, wherein said determining a ventilator static pressure stability from said ventilator static pressure data comprises:
calculating the average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
determining the maximum value and the minimum value of the deviation of the average value of the acquired static pressure data of the breathing machine and the static output pressure at each time;
determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
4. The method of measuring operational parameters of a ventilator as set forth in claim 2, wherein the step of determining ventilator dynamic pressure stability from the ventilator dynamic pressure data comprises:
determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
comparing the maximum value and the minimum value with the dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine;
and comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
5. The utility model provides a measuring device of breathing machine operating parameter which characterized in that, measuring device of breathing machine operating parameter includes microcontroller, function selection module, pressure acquisition module and communication module, wherein:
the function selection module is used for receiving a mode selection instruction and switching to a corresponding detection mode;
the microcontroller is used for controlling the pressure acquisition module to acquire pressure data in different detection modes;
the pressure acquisition module is used for measuring the static pressure data of the breathing machine in a static pressure detection mode and measuring the dynamic pressure data of the breathing machine in a dynamic pressure detection mode;
the microcontroller is further used for determining the stability of the static pressure of the breathing machine according to the static pressure data of the breathing machine and determining the stability of the dynamic pressure of the breathing machine according to the dynamic pressure data of the breathing machine;
the communication module is used for transmitting calibration parameters to the breathing machine according to the static pressure stability and the dynamic pressure stability of the breathing machine so as to calibrate the operation parameters of the breathing machine;
the pressure acquisition module is specifically configured to:
setting static pressure detection parameters and a static pressure stability threshold;
detecting static pressure data of the breathing machine according to the static pressure detection parameters in a static pressure detection mode;
the static pressure detection parameters comprise static output pressure, static pressure data acquisition time and static pressure data acquisition interval time, and the static pressure stabilization threshold comprises a positive static pressure stabilization threshold and a negative static pressure stabilization threshold.
6. The device for measuring operational parameters of a ventilator as in claim 5, wherein the pressure acquisition module is specifically configured to:
setting dynamic pressure detection parameters and dynamic pressure stability thresholds;
detecting dynamic pressure data of the breathing machine according to the dynamic pressure detection parameters in a dynamic pressure detection mode;
the dynamic pressure detection parameters comprise dynamic output pressure, dynamic pressure data acquisition time, dynamic pressure data acquisition interval time and tidal volume.
7. The device for measuring an operating parameter of a ventilator as in claim 5, wherein the microcontroller is specifically configured to:
calculating the average value of the static pressure data of the breathing machine acquired according to the static pressure data acquisition interval time;
calculating the deviation between the average value of the static pressure data of the breathing machine acquired each time and the static output pressure;
determining the maximum value and the minimum value of the deviation of the average value of the acquired static pressure data of the breathing machine and the static output pressure at each time;
determining a static maximum positive pressure deviation and a static maximum negative pressure deviation according to the maximum value and the minimum value, comparing the static maximum positive pressure deviation with the positive static pressure stability threshold value, and comparing the static maximum negative pressure deviation with the negative static pressure stability threshold value;
and determining the static pressure stability of the breathing machine according to the comparison results of the static maximum positive pressure deviation and the positive static pressure stability threshold value and the static maximum negative pressure deviation and the negative static pressure stability threshold value.
8. The device for measuring an operating parameter of a ventilator as in claim 6, wherein the microcontroller is specifically configured to:
determining the maximum value and the minimum value of the dynamic pressure data of the breathing machine acquired every time according to the dynamic pressure data acquisition interval time;
comparing the maximum value and the minimum value with the dynamic output pressure, and determining the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of the dynamic pressure data of the breathing machine acquired each time;
calculating the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation of all the acquired dynamic pressure data of the breathing machine;
and comparing the average value of the dynamic maximum positive pressure deviation and the dynamic maximum negative pressure deviation with the dynamic pressure stability threshold value, and determining the dynamic pressure stability of the respirator according to the comparison result.
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Address after: 410205 Room 101, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee after: Hunan Mingkang Zhongjin Medical Technology Co.,Ltd. Address before: 410000 101, North 1st floor, giant star entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN MICOME ZHONGJIN MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |