CN104075778B - A kind of method and its system of the calibration of anesthetic gases flow - Google Patents
A kind of method and its system of the calibration of anesthetic gases flow Download PDFInfo
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- CN104075778B CN104075778B CN201310109207.8A CN201310109207A CN104075778B CN 104075778 B CN104075778 B CN 104075778B CN 201310109207 A CN201310109207 A CN 201310109207A CN 104075778 B CN104075778 B CN 104075778B
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Abstract
The invention provides a kind of method and system of anesthetic gases flow calibration, it is described including：By detection laughing gas or oxygen channel of the air by electronic flowmeter to be measured of constant flow rate；Record the feedback voltage level of electronic flowmeter flow sensor to be measured；Record the actual flow value by detecting air；The normal stream value of the laughing gas corresponding with feedback voltage level or oxygen is obtained according to the data recorded；Judge whether to complete all calibration points；If not, changing the flow value of air, above step is repeated；If it is, the feedback voltage level recorded is combined with the normal stream value of corresponding laughing gas or oxygen, calibration is completed.Technical scheme provided in an embodiment of the present invention, air has been used as dielectric gas, calibration operation is carried out for the different gas passages of electronic flowmeter, the shortcomings that to be brought when avoiding and carrying out calibration operation using oxygen or laughing gas, it is comparatively safe using air progress calibration operation, and reduce cumbersome degree.
Description
Technical field
The present invention relates to gas flow calibration technical field, more particularly to a kind of method of anesthetic gases flow calibration and its
System.
Background technology
Currently, the gas flowmeter used in Anesthesia machine from mechanical flowmeter transition has been gradually electronic flow
Meter.And the principle of electronic flowmeter is that the feedback electric signal of sensor is gathered in flow sensor of the gas by flowmeter
And be converted to actual gas flow values and carry out the finishing operations such as display processing.In order to obtain correct gas flow values,
Electronic flowmeter needs to carry out calibration operation to flowmeter before formal use.
Calibration operation for electronic flowmeter, usually mutually goes here and there the electronic flowmeter for treating calibration with standard calibration instrument
Connection, adjust the actual gas of different flow（Such as oxygen or laughing gas）By electronic flowmeter, and synchronous recording actual flow value
With treat feedback voltage level that calibration sensor is passed back as calibration result.
But this kind of method uses actual gas in operation, especially with dielectric gas of the laughing gas as calibration
When, because gas can not reclaim, so there is running cost it is higher the problem of.Laughing gas is irritative gas simultaneously, is being used
When be also required to take corresponding safeguard procedures, cause calibration operation it is relatively complicated.
At present, actual gas is not used to still belong to technical problem just to be solved to the method for anesthetic gases flow calibration.
The content of the invention
The invention provides a kind of method and its system of the calibration of anesthetic gases flow, realize and do not use actual gas,
The only method using air to anesthetic gases flow calibration.The technical scheme is as follows：
A kind of method of anesthetic gases flow calibration, it is characterised in that including：
S101, detection laughing gas or oxygen channel of the air by electronic flowmeter to be measured by constant flow rate；
S102, record in the electronic flowmeter laughing gas to be measured or oxygen channel, have it is described detection air stream it is out-of-date, flow
The feedback voltage level of sensor；
The actual flow value of S103, record the detection air by electronic flowmeter to be measured；
S104, the feedback voltage level recorded according to and detection air flow value, obtain and the feedback electricity
Pressure is worth the normal stream value of corresponding laughing gas or oxygen；
S105, judge whether to complete all calibration points；
S106, if not, change air flow value, repeat step S101~step S105；
S107, if it is, by the feedback voltage level recorded and the standard of the corresponding laughing gas or oxygen
Flow value combines, and completes calibration.
Further, according to the flow value of the feedback voltage level recorded and detection air, obtain and described anti-
The normal stream value of the corresponding laughing gas of feedthrough voltage value or oxygen includes：
Relation between the air flow value and flow sensor feedback voltage of acquisition standard；
Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of acquisition standard；
By the flow value of detection air and the feedback voltage of electronic flowmeter flow sensor to be measured recorded
The relation of value, utilize the relation between the air flow value and flow sensor feedback voltage of the standard and the standard
Relation between laughing gas or oxygen stream value and flow sensor feedback voltage, by interpolation algorithm, obtain and the feedback electricity
Pressure is worth the normal stream value of corresponding laughing gas or oxygen.
Further, the relation between the normal air flow value and flow sensor feedback voltage of the acquisition be by with
The normal flow sensor of electronic flowmeter flow sensor same model to be measured measures；
Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of the standard be by with electricity to be measured
The normal flow sensor of subflow gauge flow sensor same model measures.
Further, the relation between the normal air flow value and flow sensor feedback voltage of acquisition and the standard
Laughing gas or oxygen stream value and flow sensor feedback voltage between relation be make use of identical electronic flowmeter same
Obtained from one passage.
A kind of system of anesthetic gases flow calibration, it is characterised in that including：
Detect air and module is provided, the detection air of constant flow rate is led to by the laughing gas or oxygen of electronic flowmeter to be measured
Road；
Data recordin module, for recording in the electronic flowmeter laughing gas to be measured or oxygen channel, there is the detection empty
Air-flow is out-of-date, the actual flow value of the corresponding detection air of feedback voltage level and record of flow sensor；
Data computation module, for the flow value of the feedback voltage level and detection air recorded according to, calculate
The laughing gas corresponding with the feedback voltage level or the normal stream value of oxygen；
Judge module, for judging whether to complete all calibration points；
Integrate module, after all calibration point is completed, by the feedback voltage level recorded with it is described corresponding
Laughing gas or oxygen normal stream value combination.
Further, it is described detection air provide module be standard air compressor, there is provided air mass flow be accurate
Constant.
Technical scheme provided in an embodiment of the present invention, air has been used as dielectric gas, for electronic flowmeter not
With gas passage carry out calibration operation, the shortcomings that to be brought when avoiding and carrying out calibration operation using oxygen or laughing gas, utilize sky
It is comparatively safe that gas carries out calibration operation, it is not necessary to carries out the safeguard procedures of correlation, reduces cumbersome degree.
Brief description of the drawings
Fig. 1 is the method flow diagram of anesthetic gases flow calibration provided in an embodiment of the present invention；
Fig. 2 is the relation and mark between identical electronic flowmeter normal air flow value and flow sensor feedback voltage
Relation schematic diagram between accurate laughing gas or oxygen stream value and flow sensor feedback voltage；
Fig. 3 is the system function module block diagram of anesthetic gases flow calibration provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated, it is used only for explaining the present invention, rather than limitation of the invention.
Embodiment
Fig. 1 is the method flow diagram of anesthetic gases flow calibration provided in an embodiment of the present invention, as shown in Figure 1：
A kind of method of anesthetic gases flow calibration, including：
Step S101：By detection laughing gas or oxygen channel of the air by electronic flowmeter to be measured of constant flow rate；
Air compressor using standard will detect laughing gas or oxygen channel of the air by electronic flowmeter to be measured, wherein
The flow for the air that air compressor is provided is constant, and the air flow value provided is accurate.Using air
It is as the reason for detection gas, the dielectric gas using actual gas as calibration can be avoided, for example, for laughing gas,
Because gas can not reclaim, thus there is running cost it is higher the problem of.Laughing gas is irritative gas simultaneously, when in use
Need to take corresponding safeguard procedures, cause calibration operation relatively complicated, so doing detection gas using air can avoid
State shortcoming.
Step S102：Record in electronic flowmeter laughing gas or oxygen channel to be measured, have detection air stream it is out-of-date, flow sensing
The feedback voltage level of device；
When detecting air by electronic flowmeter laughing gas to be measured or oxygen channel, now flow sensor is recorded
Feedback voltage level.
The actual flow value of S103, record the detection air by electronic flowmeter to be measured；
S104, the feedback voltage level recorded according to and detection air flow value, obtain and the feedback electricity
Pressure is worth the normal stream value of corresponding laughing gas or oxygen；
First, according to the flow value of the feedback voltage level recorded and detection air, obtain relative with feedback voltage level
The laughing gas or the normal stream value of oxygen answered include：
Relation between the air flow value and flow sensor feedback voltage of acquisition standard；
Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of acquisition standard；
By the feedback voltage level of the flow value for the detection air recorded and electronic flowmeter flow sensor to be measured
Relation, utilize the relation and the laughing gas or oxygen stream of standard between the air flow value and flow sensor feedback voltage of standard
Relation between value and flow sensor feedback voltage, by interpolation algorithm, obtain the laughing gas corresponding with feedback voltage level
Or the normal stream value of oxygen.
Wherein, the relation between the normal air flow value and flow sensor feedback voltage of acquisition be by with electronics to be measured
The normal flow sensor of flowmeter flow sensor same model measures.The laughing gas or oxygen stream value and flow sensing of standard
Relation between device feedback voltage is by being surveyed with the normal flow sensor of electronic flowmeter flow sensor same model to be measured
The laughing gas or oxygen stream of relation and the standard between the normal air flow value and flow sensor feedback voltage that must obtain
Relation between value and flow sensor feedback voltage is to make use of the same passage of identical electronic flowmeter and obtain
's.Fig. 2 is the relation and standard between identical electronic flowmeter normal air flow value and flow sensor feedback voltage
Relation schematic diagram between laughing gas or oxygen stream value and flow sensor feedback voltage.
Synthesis is described above, is exactly preferably to use batten difference arithmetic, root by known interpolation algorithm, the present embodiment
According to the relation between the air flow value and flow sensor feedback voltage of standard and the laughing gas or oxygen stream value of standard and stream
Relation between quantity sensor feedback voltage, and the flow value for the detection air recorded and electronic flowmeter flow to be measured
The relation of the feedback voltage level of sensor, the feedback voltage level for obtaining electronic flowmeter flow sensor to be measured should be corresponding
The normal stream value of laughing gas or oxygen.
S105, judge whether to complete all calibration points；
When recording calibration point, because sensor is different to the gas sensitization degree of different flow, so, the gas of gained
The relation of flow and feedback voltage be not it is simple linear, at this moment, the interval of the different test points taken, for example, surveying twice
The difference of the flow of the gas of amount is not just constant, and for sensor to the sensitive region of gas flow, the point taken can be with
It is relatively close.And the quantity of the test point taken is also to determine according to demand.
S106, if not, change air flow value, repeat step S101~step S105；
S107, if it is, by the feedback voltage level recorded and the standard of the corresponding laughing gas or oxygen
Flow value combines, and completes calibration.
After the record for completing all calibration points, by sensor feedback magnitude of voltage and the mark of corresponding laughing gas or oxygen
Quasi- flow is combined, obtains the standard relationship of the normal flow by sensor feedback magnitude of voltage and corresponding laughing gas or oxygen,
Complete calibration process.
Fig. 3 is the system function module block diagram of anesthetic gases flow calibration provided in an embodiment of the present invention, as shown in Figure 3：
A kind of system of anesthetic gases flow calibration, including：
Detect air and module 301 is provided, by detection laughing gas or oxygen of the air by electronic flowmeter to be measured of constant flow rate
Gas passage；Data recordin module 302, for recording in electronic flowmeter laughing gas or oxygen channel to be measured, there is detection air to flow through
When, the actual flow value of the corresponding detection air of feedback voltage level and record of flow sensor；Data computation module 303,
For the flow value according to the feedback voltage level recorded and detection air, calculate the laughing gas corresponding with feedback voltage level or
The normal stream value of oxygen；Judge module 304, for judging whether to complete all calibration points；Module 305 is integrated, is completed
After all calibration points, the feedback voltage level recorded is combined with the normal stream value of corresponding laughing gas or oxygen.
Wherein, detect air and the air compressor that module 301 is standard be provided, there is provided air mass flow be accurate constant
's.
First, air offer module 301 is provided detection air is passed through by electron stream to be measured using the air compressor of standard
The laughing gas or oxygen channel of gauge.
Data recordin module 302 is recorded in electronic flowmeter laughing gas or oxygen channel to be measured, is had detection air stream out-of-date, is flowed
The actual flow value of the corresponding detection air of feedback voltage level and record of quantity sensor, data computation module 303, according to note
The flow value of the feedback voltage level recorded and detection air, calculate the standard of the laughing gas corresponding with feedback voltage level or oxygen
Flow value.Before the calculating of data computation module 303, the air flow value and flow sensor feedback voltage of standard are first obtained
Between relation and standard laughing gas or oxygen stream value and flow sensor feedback voltage between relation.Then data calculate
Module 303 is according to the relation and the laughing gas or oxygen stream of standard between the air flow value and flow sensor feedback voltage of standard
Relation between value and flow sensor feedback voltage, and the flow value for the detection air recorded and electron stream to be measured
The relation of the feedback voltage level of gauge flow sensor, by known interpolation algorithm, the present embodiment is preferably poor using batten
Value-based algorithm, obtain electronic flowmeter flow sensor to be measured feedback voltage level should corresponding to laughing gas or oxygen normal stream
Value.
Judged whether to complete all calibration points by judge module 304.
After the record for completing all calibration points, module 305 is integrated, sensor feedback magnitude of voltage and corresponding are laughed at
The normal flow of gas or oxygen is combined, obtains the normal flow by sensor feedback magnitude of voltage and corresponding laughing gas or oxygen
Standard relationship, complete calibration process.
Technical scheme provided in an embodiment of the present invention, air has been used as dielectric gas, for electronic flowmeter not
With gas passage carry out calibration operation, the shortcomings that to be brought when avoiding and carrying out calibration operation using oxygen or laughing gas, utilize sky
It is comparatively safe that gas carries out calibration operation, it is not necessary to carries out the safeguard procedures of correlation, reduces cumbersome degree.
It the above is only the explanation done for the preferred embodiments of the present invention and its technical principle, and not to the present invention's
The limitation that technology contents are carried out, any one skilled in the art in technical scope disclosed in this invention,
The change or replacement being readily apparent that, it should all cover within the scope of the present invention.
Claims (5)
- A kind of 1. method of anesthetic gases flow calibration, it is characterised in that including：S101, detection laughing gas or oxygen channel of the air by electronic flowmeter to be measured by constant flow rate；S102, record in the electronic flowmeter laughing gas to be measured or oxygen channel, have it is described detection air stream it is out-of-date, flow sensing The feedback voltage level of device；The actual flow value of S103, record the detection air by electronic flowmeter to be measured；S104, the feedback voltage level recorded according to and detection air flow value, are obtained and the feedback voltage level Corresponding laughing gas or the normal stream value of oxygen；S105, judge whether to complete all calibration points；S106, if not, change air flow value, repeat step S101~step S105；S107, if it is, by the feedback voltage level recorded and the corresponding laughing gas or the normal flow of oxygen Value combination, completes calibration；According to the flow value of the feedback voltage level recorded and detection air, obtain corresponding with the feedback voltage level Laughing gas or the normal stream value of oxygen include：Relation between the air flow value and flow sensor feedback voltage of acquisition standard；Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of acquisition standard；By the feedback voltage level of the flow value of the detection air recorded and electronic flowmeter flow sensor to be measured Relation, utilize the relation and the laughing gas of the standard between the air flow value and flow sensor feedback voltage of the standard Or the relation between oxygen stream value and flow sensor feedback voltage, by interpolation algorithm, obtain and the feedback voltage level Corresponding laughing gas or the normal stream value of oxygen.
- 2. according to the method for claim 1, it is characterised in that the normal air flow value and flow sensor of the acquisition Relation between feedback voltage is by being measured with the normal flow sensor of electronic flowmeter flow sensor same model to be measured；Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of the standard be by with electron stream to be measured The normal flow sensor of gauge flow sensor same model measures.
- 3. according to the method for claim 1, it is characterised in that the normal air flow value of acquisition feeds back with flow sensor Relation between the laughing gas or oxygen stream value and flow sensor feedback voltage of relation and the standard between voltage is profit Obtained from the same passage of identical electronic flowmeter.
- A kind of 4. system of anesthetic gases flow calibration, it is characterised in that including：Detect air and module is provided, by detection laughing gas or oxygen channel of the air by electronic flowmeter to be measured of constant flow rate；Data recordin module, for recording in the electronic flowmeter laughing gas to be measured or oxygen channel, there is the detection air stream It is out-of-date, the actual flow value of the corresponding detection air of feedback voltage level and record of flow sensor；First standard relationship obtains module, obtains the relation between the air flow value of standard and flow sensor feedback voltage；Second standard relationship obtains module, for obtain standard laughing gas or oxygen stream value and flow sensor feedback voltage it Between relation；Data computation module, for the flow value of the feedback voltage level and detection air recorded according to, calculating and institute State the normal stream value of the corresponding laughing gas of feedback voltage level or oxygen；Judge module, for judging whether to complete all calibration points；Module is integrated, after all calibration points are completed, the feedback voltage level recorded is laughed at described corresponding The normal stream value of gas or oxygen combines；The data computation module, specifically for by it is described record detection air flow value and electronic flowmeter to be measured The relation of the feedback voltage level of flow sensor, using between the air flow value and flow sensor feedback voltage of the standard Relation and the standard laughing gas or oxygen stream value and flow sensor feedback voltage between relation, calculated by interpolation Method, obtain the normal stream value of the laughing gas corresponding with the feedback voltage level or oxygen.
- 5. system according to claim 4, it is characterised in that the detection air provides the air compression that module is standard Machine, there is provided air mass flow be accurate constant.
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| CN104784793B (en) * | 2015-04-14 | 2017-10-10 | 深圳市科曼医疗设备有限公司 | The lambda sensor automatic calibrating method of lung ventilator and lung ventilator |
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