CN105628294B - A kind of oxygen source pressure correction display methods - Google Patents
A kind of oxygen source pressure correction display methods Download PDFInfo
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- CN105628294B CN105628294B CN201410605408.1A CN201410605408A CN105628294B CN 105628294 B CN105628294 B CN 105628294B CN 201410605408 A CN201410605408 A CN 201410605408A CN 105628294 B CN105628294 B CN 105628294B
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Abstract
The present invention is shown derived from aircraft oxygen system oxygen source pressure, it can also be used to other fields.It is related to a kind of oxygen source pressure correction display methods, it is by acquiring, amendment, display and etc. composition, it is characterized in that, for the oxygen source system of more gas cylinders, the temperature signal and pressure signal of each gas cylinder are acquired by sensor, it is transmitted to collecting computer, the pressure signal of each gas cylinder is modified to the pressure signal under a certain predetermined temperature by collecting computer by temperature signal, in order to keep the residual compression of this group of gas cylinder more intuitive, the amendment pressure of multiple gas cylinders is transmitted to display system with mean value formation by collecting computer, oxygen source pressure is shown on display screen by display system.This method has preferable engineering practicability, is suitable for gas pressure amendment and display field.
Description
Technical field
The present invention is shown derived from aircraft oxygen system oxygen source pressure, it can also be used to other fields.
Background technique
In aircraft oxygen system, the display of oxygen source pressure is an important system function.Existing aircraft oxygen source is gas
Bottle high input voltage High voltage output can uniformly connect pressure gauge after output end summarizes and show oxygen source pressure.In view of safety,
Subsequent airplane design installs pressure reducer in gas cylinder mouth, the output of gas cylinder low pressure, output pressure can not oxygen pressure in reaction flask, in oxygen
Gas cylinder mouth is arranged sensor and surveys each gas pressure of the inside of a bottle.Often gas cylinder has multiple, and pressure just has multiple groups value, and pressure can be with temperature
Degree changes and changes, and pilot and maintenance personnel are intended to see that a numerical value can accurately understand gas cylinder residual compression, because
The accuracy and display methods of this pressure correction, which become, to be solved the problems, such as.
Summary of the invention
The object of the present invention is to provide a kind of oxygen source pressure correction and display methods, it can overcome the disadvantage of the prior art
End, realizes the accurate display of oxygen source.
The technical scheme is that
A kind of oxygen source pressure correction display methods, the method are applied to the oxygen source pressure correction display system of more gas cylinders,
It includes oxygen cylinder group 1, temperature and pressure compound sensor 2, maintenance system 3, display system 4, collecting computer 5；Specific step is as follows:
Step 1: temperature and pressure compound sensor 2 acquires the temperature signal and pressure signal of each oxygen cylinder in oxygen cylinder group 1,
It is transmitted to collecting computer 5；
Step 2: collecting computer 5 by the believable pressure signal of each gas cylinder in oxygen cylinder group 1 and temperature signal into
Gone judgement, after judgement, trust data enters to be calculated in next step, can not letter data enter maintenance system 3 carry out report therefore；
Step 3: collecting computer 5 will be deemed as believable pressure signal and temperature signal is converted into temperature DEG C, pressure
Then MPa, specific conversion are modified to the amendment pressure of the oxygen cylinder under a certain predetermined temperature by correction formula according to sensor characteristics
Power, correction formula are as follows:
Wherein:
P2--- it is adapted to t0At a temperature of oxygen pressure, MPa；
P1--- actually measured pressure, MPa；
t1--- actually measured temperature, DEG C；
t0--- the temperature that pre-corrected arrives, DEG C；
A --- gas atom number, oxygen 32；
ρ --- temperature t0, under an atmospheric pressure, gas density, kg/m3；
9.87 --- constant, " MPa " are converted to the constant of " atm "；
0.1 --- constant, " bar " are converted to the constant of " MPa "；
A --- Robert Van de Walle constant；
Oxygen: a=1.376barm6/kmol2
Step 4: the revised oxygen cylinder amendment pressure of each oxygen cylinder in oxygen cylinder group 1 will enter maintenance system,
Convenient for being observed when system maintenance.Mean value calculation has been carried out to oxygen cylinder amendment pressure, and result has been exported to display system 4
On.
Advantages of the present invention
The pressure signal and temperature signal of each gas cylinder in oxygen cylinder group are judged, after judgement, credible number
According to enter in next step calculate, can not letter data enter maintenance system with improve display data confidence level.Using it is a kind of more subject to
True pressure modification, the influence by temperature to gas pressure of the inside of a bottle is eliminated, then revised each storage pressure is transmitted to dimension
Protecting system, the revised pressure of each oxygen cylinder will enter maintenance system and be convenient for observing when system maintenance.
Detailed description of the invention
Fig. 1 is the method for the present invention schematic diagram.
Specific embodiment
Temperature and pressure compound sensor 2 is housed in oxygen cylinder group 1, collecting computer 5 collects temperature by temperature and pressure compound sensor 2
Spend signal and pressure signal；Temperature signal collected and pressure signal judge whether effectively, generally in normal range (NR)
Interior is valid data, if invalid data, then enters maintenance system 3 and carries out report event；After judging that data are effective, by temperature signal and
Pressure signal is reduced to temperature value DEG C and pressure value MPa with sensor characteristic；Temperature value DEG C and pressure value MPa substitution are repaired
Positive formula, is the oxygen cylinder amendment pressure at 20 DEG C by pressure correction, and each revised oxygen cylinder of oxygen cylinder corrects pressure
To enter maintenance system, convenient for observing when system maintenance.Mean value calculation is carried out to oxygen cylinder amendment pressure, and result is exported
To display system 4.
Claims (1)
1. a kind of oxygen source pressure correction display methods, the method is applied to the oxygen source pressure correction display system of more gas cylinders,
Including oxygen cylinder group (1), temperature and pressure compound sensor (2), maintenance system (3), display system (4), collecting computer (5)；It is special
Sign is, the specific steps are as follows:
Step 1: temperature and pressure compound sensor (2) acquires the temperature signal and pressure signal of each oxygen cylinder in oxygen cylinder group (1),
It is transmitted to collecting computer (5)；
Step 2: collecting computer (5) by the believable pressure signal of each gas cylinder in oxygen cylinder group (1) and temperature signal into
Gone judgement, after judgement, trust data enters to be calculated in next step, can not letter data enter maintenance system (3) carry out report therefore；
Step 3: collecting computer (5) will be deemed as believable pressure signal and temperature signal is converted into temperature (DEG C), pressure
(MPa), then specific conversion is modified to the amendment of the oxygen cylinder under a certain predetermined temperature by correction formula according to sensor characteristics
Pressure, correction formula are as follows:
Wherein:
P2--- it is adapted to t0At a temperature of oxygen pressure, MPa；
P1--- actually measured pressure, MPa；
t1--- actually measured temperature, DEG C；
t0--- the temperature that pre-corrected arrives, DEG C；
A --- gas atom number, oxygen 32；
ρ --- temperature t0, under an atmospheric pressure, gas density, kg/m3；
9.87 --- constant, " MPa " are converted to the constant of " atm "；
0.1 --- constant, " bar " are converted to the constant of " MPa "；
A --- Robert Van de Walle constant；Oxygen: a=1.376barm6/kmol2；
Step 4: the revised oxygen cylinder amendment pressure of each oxygen cylinder in oxygen cylinder group (1) will enter maintenance system, just
It is observed when system maintenance；Mean value calculation has been carried out to oxygen cylinder amendment pressure, and result has been exported to display system (4)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605408.1A CN105628294B (en) | 2014-10-31 | 2014-10-31 | A kind of oxygen source pressure correction display methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605408.1A CN105628294B (en) | 2014-10-31 | 2014-10-31 | A kind of oxygen source pressure correction display methods |
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| CN105628294A CN105628294A (en) | 2016-06-01 |
| CN105628294B true CN105628294B (en) | 2018-12-14 |
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| CN201410605408.1A Active CN105628294B (en) | 2014-10-31 | 2014-10-31 | A kind of oxygen source pressure correction display methods |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751048A (en) * | 2020-06-30 | 2020-10-09 | 中国航发动力股份有限公司 | Pressure sensor online checking device and method matched with digital instrument |
| CN112623276A (en) * | 2020-12-28 | 2021-04-09 | 上海空间推进研究所 | Correction method and system for gas cylinder pressure of on-orbit spacecraft changing along with temperature |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084273A (en) * | 1993-03-24 | 1994-03-23 | 中国人民解放军空军杭州疗养院 | Oxygen quality automatic testing instrument |
| CN1584514A (en) * | 2004-06-01 | 2005-02-23 | 上海市公用事业研究所 | Computer gas volume metering method and device for natural gas fuel cylinder of vehicle |
| CN2727730Y (en) * | 2004-08-25 | 2005-09-21 | 中国科学院金属研究所 | A hydrogen charging-discharging performance testing device by volumetric method |
| CN102331331A (en) * | 2011-06-20 | 2012-01-25 | 中国国际航空股份有限公司 | Method for detecting performance of onboard oxygen of aircraft |
| CN202614463U (en) * | 2012-05-09 | 2012-12-19 | 齐齐哈尔大学 | A temperature drift calibration device of a piezoresistive pressure sensor |
| CN103759138A (en) * | 2014-01-18 | 2014-04-30 | 福建启胜电子科技有限公司 | Safe permanent gas cylinder filling system and intelligent management method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7489992B2 (en) * | 2004-04-12 | 2009-02-10 | Sagem Avionics, Inc. | Method and system for remotely communicating and interfacing with aircraft condition monitoring systems |
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2014
- 2014-10-31 CN CN201410605408.1A patent/CN105628294B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084273A (en) * | 1993-03-24 | 1994-03-23 | 中国人民解放军空军杭州疗养院 | Oxygen quality automatic testing instrument |
| CN1584514A (en) * | 2004-06-01 | 2005-02-23 | 上海市公用事业研究所 | Computer gas volume metering method and device for natural gas fuel cylinder of vehicle |
| CN2727730Y (en) * | 2004-08-25 | 2005-09-21 | 中国科学院金属研究所 | A hydrogen charging-discharging performance testing device by volumetric method |
| CN102331331A (en) * | 2011-06-20 | 2012-01-25 | 中国国际航空股份有限公司 | Method for detecting performance of onboard oxygen of aircraft |
| CN102840881A (en) * | 2011-06-20 | 2012-12-26 | 中国国际航空股份有限公司 | Flight-crew oxygen system performance detection method and system |
| CN202614463U (en) * | 2012-05-09 | 2012-12-19 | 齐齐哈尔大学 | A temperature drift calibration device of a piezoresistive pressure sensor |
| CN103759138A (en) * | 2014-01-18 | 2014-04-30 | 福建启胜电子科技有限公司 | Safe permanent gas cylinder filling system and intelligent management method thereof |
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| CN105628294A (en) | 2016-06-01 |
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