CN114370983B - Calibration method and test method for compliance detection - Google Patents
Calibration method and test method for compliance detection Download PDFInfo
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- CN114370983B CN114370983B CN202111634173.5A CN202111634173A CN114370983B CN 114370983 B CN114370983 B CN 114370983B CN 202111634173 A CN202111634173 A CN 202111634173A CN 114370983 B CN114370983 B CN 114370983B
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- 238000001514 detection method Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 230000008859 change Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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Abstract
The invention discloses a calibration method and a test method for compliance detection, and provides the following technical scheme aiming at the problems of inconvenient compliance detection and low precision in the prior art. The invention has simple and convenient use for testing in the breathing pipeline and high precision, and can realize compliance detection on different devices.
Description
Technical Field
The invention relates to the field of medical respiratory gas detection, in particular to a calibration method and a test method for compliance detection.
Background
Compliance means the elastomer and takes place the difficult and easy degree of deformation under the exogenic action, and the compliance of elastomer shows its deformability greatly strong, can arouse great deformation promptly under less exogenic action, through with different devices or different tube coupling at detection device's both ends, calculates the leakage condition of device or pipeline through the data contrast, realizes the test to the gas leakage nature of device under test, reachs the deformability size of device under test.
In addition, no proper device is used for testing the compliance in the medical respiration field, and various errors are caused to the detection in the medical respiration field in the detection process of the detection device in other industries, so that inconvenience is brought.
Disclosure of Invention
The first purpose of the invention is to provide a calibration method for compliance detection, which has the advantages of convenient detection and high precision.
The technical purpose of the invention is realized by the following technical scheme:
a calibration method for compliance detection is realized by a device for compliance detection, the device comprises a gas storage device for providing gas, an exhaust hole device for exhausting gas, a detection assembly for detecting compliance, a device to be detected is connected to the detection assembly, one end of the detection assembly is connected with the gas storage device through a pressure regulating valve, vent pipelines connected with the gas storage device and the device to be detected are reserved at two ends of the detection assembly respectively, the detection assembly comprises a control assembly for controlling gas circulation and a data detection assembly for data statistics, the control assembly is connected with the device to be detected through a communication pipeline, the control assembly comprises a first ball valve switch connected with the pressure regulating valve and a second ball valve switch connected with the exhaust hole device, the first ball valve switch is connected with the second ball valve switch through the communication pipeline, the data detection assembly comprises a digital pressure meter connected to the first ball valve switch, a flow sensor connected to the second ball valve switch, a digital integrating device and a direct current power supply are connected to the flow sensor, the digital integrating device comprises a data acquisition system chip, an instantaneous integrating system chip, and a flow sensor, and the flow sensor is connected between the digital integrating device and the flow sensor; the method is characterized in that: firstly, gas is introduced into the detection device for calibration, the device to be detected is connected into the detection device for detection after calibration,
the specific calibration steps are as follows:
1) Opening a digital pressure gauge;
2) Connecting a calibration pipeline between two ports connected with a device to be tested;
3) Opening the first ball valve switch and closing the second ball valve switch;
4) Adjusting the pressure regulating valve to meet the pressure required by the compliance test;
5) Closing the first ball valve switch, observing the pressure change value of the digital pressure gauge, and if the number of the digital pressure gauge is not changed, testing that the pipeline is airtight;
6) On the premise of detecting that no air leakage exists, the digital integrating device and the flow sensor are opened to supply power;
7) And opening a second ball valve switch, observing the reading change of the digital pressure gauge to 0, recording the reading of the digital integrating device at the moment to be V1, and finishing the step to realize calibration.
By adopting the technical scheme, the pressure is adjusted under the action of the pressure regulating valve, data after the pressure of the testing device is adjusted is counted through the data detection assembly, then the testing device is connected into the testing device through pipelines arranged at two ends of the detection assembly, the circulation condition of gas in the testing device is controlled through the control assembly, the data after the testing device is connected into the testing device is counted through the data detection assembly again, the difference value of the data of the two times is obtained to obtain the compliance performance of the testing device, the gas circulation led into the detection assembly is controlled through the first ball valve switch, the second ball valve switch communicated with the first ball valve switch through the pipeline is opened, the communication of the gas between the first ball valve switch and the second ball valve switch is realized, the change of the pressure value is directly observed through the digital pressure gauge, the data is directly read, the electric energy is supplied to the circuit through the direct current power supply to maintain the stable constant flow of the current, the gas flow passing through the flow sensor is counted through the digital integration device, the data acquisition system chip is converted into a digital signal, the integral operation is calculated, the instantaneous flow and the accumulated flow and the instantaneous flow and the accumulated flow are displayed through the pipeline, and the pipeline, so that the calibration of the data can be conveniently calibrated.
The second purpose of the invention is to provide a test method for compliance detection, which has the advantages of convenient detection and high precision.
The technical purpose of the invention is realized by the following technical scheme:
before detection, the calibration method of the technical scheme is adopted for calibration, after the calibration step is completed, a device to be tested is accessed into the test assembly to test whether the device to be tested leaks air, and the specific test process comprises the following steps:
1) The device to be tested is accessed into the test component for preparing for test use;
2) Opening the first ball valve switch and closing the second ball valve switch;
3) The pressure regulating valve is adjusted by the adjusting knob to reach the pressure required by the compliance test;
4) Closing the first ball valve switch, and watching the pressure change of the digital pressure gauge, wherein the condition that the number of the digital pressure gauge does not change indicates that the device to be tested is airtight;
5) On the premise that the device to be measured is airtight, the accumulated volume of the digital integrating device is reset to zero;
6) Opening a second ball valve switch, observing the numerical value of the digital pressure gauge until the numerical value becomes 0, and recording the reading of the digital integrating device at the moment as V2;
7) The value of compliance gas V = V2-V1 is calculated from the readings of the digital integration device in both the calibration and test steps.
In conclusion, the invention has the following beneficial effects:
1. the invention adopts a mode of firstly ventilating and then exhausting for testing, and is provided with the exhaust hole device for controlling the flow rate of the exhaust gas, the sizes of the exhaust holes are different according to the pressure of the gas to be tested, and the larger the pressure is, the larger the aperture is;
2. the device collects the voltage signal of the flowmeter of the flow sensor of the test pipeline in real time, the voltage signal is transmitted to a volume integrating device through connection, the integrating device consists of a data collecting system chip and an instantaneous flow and accumulated flow display, the flow sensor signal is converted into a digital signal through a data acquisition system chip, and then the digital signal is subjected to integral operation processing to calculate the volume value of the breathing pipeline.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
In the figure: 1. a gas storage device; 2. a first ball valve switch; 3. a digital pressure gauge; 4. a device under test; 5. calibrating a pipeline; 6. a digital integration device; 7. a flow sensor; 8. a second ball valve switch; 9. an exhaust vent arrangement; 10. a direct current power supply; 11. a pressure regulating valve; 12. and a communication pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
A device for compliance detection, see fig. 1, includes a gas storage device 1 for providing gas, an exhaust hole device 9 for exhausting gas, a detection assembly for detecting compliance, a device 4 to be detected is connected at the detection assembly, one end of the detection assembly is connected with the gas storage device 1 by setting a pressure regulating valve 11, two ends of the detection assembly are respectively provided with a ventilation pipeline connected with the gas storage device 1 and the device 4 to be detected, the detection assembly includes a control assembly for controlling gas circulation and a data detection assembly for data statistics, and the control assembly is connected with the device 4 to be detected by setting a communication pipeline 12; the pressure is adjusted under the action of the pressure adjusting valve 11, data after the pressure of the testing device is adjusted are counted through the data detection assembly, the device to be tested 4 is connected into the testing device through pipelines arranged at two ends of the detection assembly, the circulation condition of gas in the device to be tested 4 is controlled through the control assembly, data after the testing device is connected into the device to be tested 4 are counted through the data detection assembly again, and the difference value of the data of the front time and the data of the back time are obtained to obtain the compliance performance of the device to be tested 4.
The control assembly comprises a first ball valve switch 2 connected with the pressure regulating valve 11 and a second ball valve switch 8 connected with the vent hole device 9, and the first ball valve switch 2 is communicated with the second ball valve switch 8 through a pipeline; control the gas circulation that lets in the determine module through first ball valve switch 2, open the second ball valve switch 8 that communicates through the pipeline with first ball valve switch 2, realize gaseous intercommunication between first ball valve switch 2 and second ball valve switch 8.
The data detection assembly comprises a digital pressure gauge 3 connected to the first ball valve switch 2 and a flow sensor 7 connected to the second ball valve switch 8, and data are directly read by directly observing the change of a pressure value through the digital pressure gauge 3; a calibration pipeline 5 is connected between the digital pressure gauge 3 and the flow sensor 7, and the detection device is calibrated through the calibration pipeline 5; the digital integrating device 6 and the direct current power supply 10 are connected with the flow sensor 7, the direct current power supply 10 supplies electric energy to the circuit to maintain the stable flow of current, and the digital integrating device 6 counts the gas flow passing through the flow sensor 7; the digital integrating device 6 is composed of a data acquisition system chip and an instantaneous flow and accumulated flow display, data are processed and converted into digital signals through the data acquisition system chip, then integral operation processing is carried out, instantaneous flow and accumulated flow are calculated, and the calculated instantaneous flow and accumulated flow are displayed through the instantaneous flow and accumulated flow display so as to read data visually.
Example 2, a particular test method of the invention a method for compliance detection is accomplished by an apparatus for compliance detection:
a calibration method for compliance detection, the calibration process for a detection device: firstly, gas is introduced into the detection device for calibration, and the device to be tested is accessed into the device to be tested after calibration to test the device to be tested:
the calibration procedure is as follows: firstly, introducing gas into a detection device for calibration, and then accessing a device 4 to be detected to detect the device 4 to be detected;
the specific calibration steps are as follows:
1) Opening a digital pressure gauge 3;
2) Connecting a calibration pipeline 5 between two ports connected with a device to be tested 4;
3) The first ball valve switch 2 is turned on, and the second ball valve switch 8 is turned off;
4) Adjusting the pressure regulating valve 11 to meet the pressure required by the compliance test;
5) Closing the first ball valve switch 2, observing the pressure change value of the digital pressure gauge 3, and if the number of the digital pressure gauge 3 is not changed, the test pipeline is airtight;
6) On the premise of detecting that no air leakage exists, the digital integrating device 6 and the flow sensor 7 are opened to supply power;
7) And opening a second ball valve switch 8, observing the reading change of the digital pressure gauge 3 to 0, recording the reading of the digital integrating device 6 at the moment to be V1, and completing the steps to realize calibration.
A test method for compliance detection is to connect a device 4 to be tested into a test assembly to test whether the device 4 to be tested leaks air or not after the calibration step is completed, and the specific test process is as follows:
1) The device to be tested 4 is accessed into the testing component for preparing for testing;
2) The first ball valve switch 2 is turned on, and the second ball valve switch 8 is turned off;
3) Adjusting the knob pressure regulating valve 11 to reach the pressure required by the compliance test;
4) Closing the first ball valve switch 2, observing the pressure change of the digital pressure gauge 3, wherein the digital of the digital pressure gauge 3 does not change to indicate that the device 4 to be tested is airtight;
5) On the premise that the device 4 to be measured is airtight, the accumulated volume of the digital integrating device 6 is reset to zero;
6) Opening a second ball valve switch 8, observing the numerical value of the digital pressure gauge 3 until the numerical value becomes 0, and recording the reading of the digital integrating device 6 at the moment as V2;
7) The value V = V2-V1 of the compliance gas is calculated from the readings of the digital integrating device 6 in both the calibration and test steps.
The working principle of the invention is as follows:
by adopting the vent hole device 9, the problem of large and unstable flow rate fluctuation in the adopted period can be solved, the pressure can be effectively changed stably, and the calculation precision of the compliance is improved; meanwhile, the size of the vent hole is set to be different according to the pressure of the gas to be measured, the larger the pressure is, the larger the aperture is, the voltage signal of a flowmeter of a flow sensor 7 of the test pipeline is collected in real time and is transmitted to a volume integrating device through connection through the voltage signal, the volume integrating device is composed of a data collecting system chip and an instantaneous flow and accumulated flow displayer, the signal of the flow sensor 7 is converted into a digital signal through the data collecting system chip and is subjected to integral operation processing, and then the volume value of the breathing pipeline is calculated, and the corresponding compliance value is calculated through calibrating the difference value of the measured volume and the test volume of the device to be measured 4.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the present invention.
Claims (2)
1. A calibration method for compliance detection is realized by a device for compliance detection, the device comprises a gas storage device (1) for providing gas, an exhaust hole device (9) for exhausting gas, a detection assembly for detecting compliance, a device to be detected (4) is connected to the detection assembly, one end of the detection assembly is connected with the gas storage device (1) through a pressure regulating valve (11), two ends of the detection assembly are respectively provided with a vent pipeline connected with the gas storage device (1) and the device to be detected (4), the detection assembly comprises a control assembly for controlling gas circulation and a data detection assembly for data statistics, the control assembly is connected with the device to be detected (4) through a communication pipeline (12), the control assembly comprises a first ball valve switch (2) connected with the pressure regulating valve (11) and a second ball valve switch (8) connected with the exhaust hole device (9), the first ball valve switch (2) and the second ball valve switch (8) are connected through the communication pipeline (12), the data detection assembly comprises a digital flow sensor (7) and a digital flow sensor (10) connected to the ball valve switch (2), the digital integrating device (6) consists of a data acquisition system chip, an instantaneous flow and accumulated flow display, and a calibration pipeline (5) is connected between the digital pressure gauge (3) and the flow sensor (7); the method is characterized in that: firstly, gas is introduced into the detection device for calibration, the device to be detected (4) is accessed to detect the device to be detected (4) after calibration,
the specific calibration steps are as follows:
1) Opening a digital pressure gauge (3);
2) Connecting a calibration pipeline (5) between two ports connected with a device to be tested (4);
3) The first ball valve switch (2) is turned on, and the second ball valve switch (8) is turned off;
4) Adjusting the pressure regulating valve (11) to meet the pressure required by the compliance test;
5) Closing the first ball valve switch (2), observing the pressure change value of the digital pressure gauge (3), and if the number of the digital pressure gauge (3) is not changed, testing the pipeline to be airtight;
6) On the premise of detecting no air leakage, the digital integrating device (6) and the flow sensor (7) are opened to supply power;
7) And opening a second ball valve switch (8), observing the reading change of the digital pressure gauge (3) to 0, recording the reading of the digital integrating device (6) at the moment to be V1, and finishing the step to realize calibration.
2. A test method for compliance detection, characterized by: before the test, the calibration method of claim 1 is adopted for calibration, after the calibration step is completed, the device under test (4) is connected into the test assembly to test whether the device under test (4) leaks air or not,
the specific test process comprises the following steps:
1) The device to be tested (4) is connected into the testing component for preparing testing;
2) Opening the first ball valve switch (2), and closing the second ball valve switch (8);
3) The pressure regulating valve (11) is adjusted by an adjusting knob to reach the pressure required by the compliance test;
4) Closing the first ball valve switch (2), observing the pressure change of the digital pressure gauge (3), wherein the condition that the number of the digital pressure gauge (3) does not change indicates that the device to be tested (4) is airtight;
5) On the premise that the device to be measured (4) is airtight, the accumulated volume of the digital integrating device (6) is reset to zero;
6) Opening a second ball valve switch (8), observing the numerical value of the digital pressure gauge (3) until the numerical value becomes 0, and recording the reading of the digital integrating device (6) at the moment as V2;
7) The value of compliance gas V = V2-V1 is calculated from the readings of the digital integrating device (6) in both the calibration and test steps.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267721A (en) * | 1979-11-09 | 1981-05-19 | Timeter Instrument Corp. | Respiratory analyzer |
| FR2887777A1 (en) * | 2005-06-29 | 2007-01-05 | Taema Sa | Medical ventilator for e.g. administering gas to patient, has control unit with data storage and/or processing unit, estimating patient`s biomechanical condition based on gaseous circuit`s pressure, gas flow and preset compliance value |
| CN102252805A (en) * | 2011-05-26 | 2011-11-23 | 北京康斯特仪表科技股份有限公司 | Multi-range field full-automatic pressure and electric signal calibrating instrument |
| CN103900840A (en) * | 2012-12-28 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Detection method and detection device for anesthesia machine controlled leakage and compliance test pipelines |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004014619A1 (en) * | 2003-03-24 | 2005-03-17 | Weinmann Geräte für Medizin GmbH + Co. KG | Leak detection system for respiratory gas supply apparatus has computer calculating respiratory parameter resistance and compliance and leak for two or more successive breathing cycles |
| US9943249B2 (en) * | 2015-07-14 | 2018-04-17 | Darryl Zitting | Respiratory gas monitor testing system and methods of use |
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2021
- 2021-12-29 CN CN202111634173.5A patent/CN114370983B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267721A (en) * | 1979-11-09 | 1981-05-19 | Timeter Instrument Corp. | Respiratory analyzer |
| FR2887777A1 (en) * | 2005-06-29 | 2007-01-05 | Taema Sa | Medical ventilator for e.g. administering gas to patient, has control unit with data storage and/or processing unit, estimating patient`s biomechanical condition based on gaseous circuit`s pressure, gas flow and preset compliance value |
| CN102252805A (en) * | 2011-05-26 | 2011-11-23 | 北京康斯特仪表科技股份有限公司 | Multi-range field full-automatic pressure and electric signal calibrating instrument |
| CN103900840A (en) * | 2012-12-28 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Detection method and detection device for anesthesia machine controlled leakage and compliance test pipelines |
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