CN110006510A - A kind of calibration method of electron temperature temperature-pressure compensation film type gas meter - Google Patents
A kind of calibration method of electron temperature temperature-pressure compensation film type gas meter Download PDFInfo
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- CN110006510A CN110006510A CN201910249558.6A CN201910249558A CN110006510A CN 110006510 A CN110006510 A CN 110006510A CN 201910249558 A CN201910249558 A CN 201910249558A CN 110006510 A CN110006510 A CN 110006510A
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- time
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- photosignal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of calibration methods of electron temperature temperature-pressure compensation film type gas meter.Specific step is as follows by the present invention: step 1 judges stability of flow: setting the time that T1 turns around as last time character wheel, T2 is the time that this character wheel turns around, when the difference of T1 and T2 is greater than the error of present flow rate, continue to compare, until difference then thinks that flow is stable in error range；Step 2 exports according to current regime flow enabling signal, while calculating time-out time, starts to sample when sonic nozzle testing standard device detects first photosignal；For the table tool after sampling with photosignal output just to export time T output photoelectric signal, the value for exporting time T is this character wheel lap time T2 multiplied by penalty coefficient F every time；Stop ventilation after sonic nozzle testing standard device is completed to sample, table tool stops photosignal output after flow is not detected, completes this test.The present invention reduces detection time, improves detection efficiency.
Description
Technical field
The invention belongs to field of measuring techniques, and in particular to the measurement verification of electron temperature temperature-pressure compensation film type gas meter.
Background technique
Electronic temp temperature-pressure compensation film type gas meter does not change the normal metering method of original diaphragm, repairs only by data
Positive transition preferably realizes the gas volume metering under normal temperature, but the office too low due to diaphragm gauge its Meter resolution
It is sex-limited, and compensated data can not be exported effectively in real time, and the type table tool is caused to be difficult to detect, and artificially can only pass through meter
It calculates formula and confirms that compensation effect, detection efficiency are low.On the basis of not changing combustion gas table structure and not increasing cost, propose
A method of it is detected, compensated volume is exported as unit of 10L by LED light, and combine existing by photoelectricity sampling
Sonic nozzle testing standard device, the problem of effective solution detection difficult.
Summary of the invention
The present invention is low for the calibrating efficiency of electronic temp temperature-pressure compensation film type gas meter, proposes a kind of electronics temperature
Spend the calibration method of temperature-pressure compensation film type gas meter.
Verification process of the present invention is related to sonic nozzle testing standard device and the table tool with photosignal output, and standard passes through
Photosignal is acquired to calculate error；The specific implementation steps are as follows:
Step 1 judges stability of flow:
If T1 is the time that last time character wheel turns around, T2 is the time that this character wheel turns around, when the difference of T1 and T2 are big
When the error of present flow rate, continue to compare, until difference then thinks that flow is stable in error range；
Step 2 exports according to current regime flow enabling signal, while calculating time-out time, when sonic nozzle is surveyed
Examination standard starts to sample when detecting first photosignal；The table with photosignal output after sampling has just with defeated every time
Time T output photoelectric signal out, the value of output time T are this character wheel lap time T2 multiplied by penalty coefficient F；Work as velocity of sound
Nozzle characteristic testing standard stops ventilation after completing sampling, and table tool stops photosignal output after flow is not detected, completes this
Test.
The judgement of stability of flow in the step 1, the time that wherein character wheel turns around are detected to obtain by the Hall time,
Specifically the starting Hall time detection after interruption detects hall signal triggering, the i.e. time of one circle of character wheel rotation, by this time
Between can calculate the ventilation flow rate of current table tool.Since there are regular hour mistakes in quick and slow rotation for mechanical character wheel
Difference, therefore error time value is divided into 3 grades: within 30S-i.e. flow is greater than 1.2 sides, allowable error 1S；Within 100S-i.e. flow
Greater than 0.36 side, allowable error 3S；Remaining flow allowable error 6S.The time T2 that this character wheel turns around is obtained, and calculates T1
With the difference of T2, the error time value allowed is then determined according to time T2.If the difference of T1 and T2 is greater than error time value,
Illustrate that flow is not stable, continue waiting for stability of flow and cover last time T1 value with T2 value, until the difference of T1 and T2 is in error
Between be worth range in, then illustrate that flow is stable and start to detect, by T2 value be assigned to output time T, as signal export the time
T, and the time-out time T ' that stop signal exports is calculated according to T2 value, it, will because can not know when to stop ventilation
1.3 times of T2 value does not detect that effective hall signal is then thought within the time-out time T ' period as time-out time T ' again
Stop ventilating.
What photosignal exported in step 2 is implemented as follows:
Photosignal output inquires detection with 100ms interval time.First determine whether the bright time-out time of LED lightWhether reach
Otherwise preset time threshold continues waiting for the bright time-out of LED light to LED light is then closed；Next judges whether to reach optical telecommunications
Number output time T, continued waiting for if arrive, otherwise according to character wheel rotation one circle newest time T2 multiplied by penalty coefficient F weigh
Confidence number exports time T, and lightening LED lamp output photoelectric signal, resets LED light time-out timeLED light lighting time threshold value
For 500ms；Finally whether detection hall signal is overtime, and effective Hall pulse letter is not detected always time-out time T ' is interior
Number, then illustrate to have stopped ventilating, removes photosignal and export time T, stop signal output.
Beneficial effects of the present invention:
The present invention goes calculating to compare in the measurement verification of electronic temp temperature-pressure compensation film type gas meter, without artificial
Error is compensated, and repeatedly measurement error consistency is fine, reduces detection time, substantially increases electron temperature temperature and pressure compensation
The detection efficiency of diaphragm gauge.
Detailed description of the invention
Fig. 1 is invention's principle block diagram；
Fig. 2 is Hall time overhaul flow chart of the present invention；
Fig. 3 is that photosignal of the present invention exports flow chart；
Specific embodiment
The present invention will be described in detail with attached drawing With reference to embodiment.
As shown in Figure 1,2 and 3, volume is converted to time signal by the method for the present invention, and character wheel is turned over a circle (10L)
After time is multiplied by penalty coefficient, with the time output photoelectric signal.The present invention realizes that process is related to sonic nozzle testing standard device
With the table tool exported with photosignal, standard calculates error by acquisition photosignal；The specific implementation steps are as follows:
Step 1 judges stability of flow:
If T1 is the time that last time character wheel turns around, T2 is the time that this character wheel turns around, when the difference of T1 and T2 are big
When the error of present flow rate, continue to compare, until difference then thinks that flow is stable in error range；
Step 2 exports according to current regime flow enabling signal, while calculating time-out time, when sonic nozzle is surveyed
Examination standard starts to sample when detecting first photosignal；The table with photosignal output after sampling has just with defeated every time
Time T output photoelectric signal out, the value of output time T are this character wheel lap time T2 multiplied by penalty coefficient F；Work as velocity of sound
Nozzle characteristic testing standard stops ventilation after completing sampling, and table tool stops photosignal output after flow is not detected, completes this
Test.
It is illustrated in figure 2 Hall time overhaul flow chart, is specifically started suddenly after interruption detects hall signal triggering
At that time it is detected between, i.e. the time of one circle of character wheel rotation, thus the time can calculate the ventilation flow rate of current table tool.Due to mechanical word
Error time value is divided into 3 grades quickly and when slow rotation there are regular hour errors by wheel: within 30S-i.e. flow is big
In 1.2 sides, allowable error 1S；Within 100S-i.e. flow be greater than 0.36 side, allowable error 3S；Remaining flow allowable error 6S.
The time T2 that this character wheel turns around is obtained, and calculates the difference of T1 and T2, when then determining the error allowed according to time T2
Between be worth.If the difference of T1 and T2 is greater than error time value, illustrate that flow is not stable, continues waiting for stability of flow and with T2 value
Last time T1 value is covered, until the difference of T1 and T2 is within the scope of error time value, then illustrates that flow is stable and starts to detect, it will
T2 value is assigned to output time T, exports time T as signal, and the time-out time T ' of stop signal output is calculated according to T2 value,
Because can not know when to stop ventilation, using 1.3 times of T2 value as time-out time T ', in the time-out time T ' time
Do not detect that effective hall signal is then thought to have stopped ventilating again in section.
It is illustrated in figure 3 photosignal output flow chart, photosignal output inquires detection with 100ms interval time.It is first
First judge the bright time-out time of LED lightWhether reach preset time threshold, to LED light is then closed, otherwise continues waiting for LED light
Bright time-out；Next judges whether to reach photosignal output time T, continue waiting for if do not arrived, otherwise according to character wheel rotation one
The newest time T2 of circle exports time T, and lightening LED lamp output photoelectric signal multiplied by penalty coefficient F reset signal, resets LED
Lamp time-out timeLED light lighting time threshold value is 500ms；Finally whether detection hall signal is overtime, interior in time-out time T '
Effective Hall pulse signal is not detected always, then illustrates to have stopped ventilating, removes photosignal and exports time T, stop
Signal output.
Claims (3)
1. a kind of calibration method of electron temperature temperature-pressure compensation film type gas meter, verification process are related to sonic nozzle testing standard device
With the table tool exported with photosignal, standard calculates error by acquisition photosignal；It is characterized in that specific implementation step
It is rapid as follows:
Step 1 judges stability of flow:
If T1 is the time that last time character wheel turns around, T2 is the time that this character wheel turns around, and is worked as when the difference of T1 and T2 is greater than
When the error of preceding flow, continue to compare, until difference then thinks that flow is stable in error range；
Step 2 exports according to current regime flow enabling signal, while calculating time-out time, tests and marks when sonic nozzle
Quasi- device starts to sample when detecting first photosignal；When the table with photosignal output after sampling has just to export every time
Between T output photoelectric signal, output time T value be this character wheel lap time T2 multiplied by penalty coefficient F；Work as sonic nozzle
Testing standard device stops ventilation after completing sampling, and table tool stops photosignal output after flow is not detected, completes this test.
2. a kind of calibration method of electron temperature temperature-pressure compensation film type gas meter according to claim 1, it is characterised in that
The judgement of stability of flow in the step 1, the time that wherein character wheel turns around are detected to obtain, specifically exist by the Hall time
Interruption detects starting Hall time detection after hall signal triggering, i.e. the time of one circle of character wheel rotation, thus the time can calculate
The ventilation flow rate of current table tool out.Since there are regular hour errors in quick and slow rotation for mechanical character wheel, therefore will be accidentally
Poor time value is divided into 3 grades: within 30S-i.e. flow be greater than 1.2 sides, allowable error 1S；Within 100S-i.e. flow be greater than 0.36 side,
Allowable error 3S；Remaining flow allowable error 6S.The time T2 that this character wheel turns around is obtained, and calculates the difference of T1 and T2,
Then the error time value allowed is determined according to time T2.If the difference of T1 and T2 is greater than error time value, illustrate flow not
Stablize, continue waiting for stability of flow and covers last time T1 value with T2 value, until the difference of T1 and T2 is within the scope of error time value,
Then illustrate that flow is stable to start to detect, T2 value is assigned to output time T, exports time T as signal, and according to T2 value
The time-out time T ' of stop signal output is calculated, because can not know when to stop ventilation, 1.3 times of T2 value is made
For time-out time T ', do not detect that effective hall signal is then thought to have stopped ventilating again within the time-out time T ' period.
3. a kind of calibration method of electron temperature temperature-pressure compensation film type gas meter according to claim 2, it is characterised in that
What photosignal exported in step 2 is implemented as follows:
Photosignal output inquires detection with 100ms interval time.First determine whether the bright time-out time T of LED light~whether reach pre-
If time threshold, to LED light is then closed, the bright time-out of LED light is otherwise continued waiting for；Next judges whether to reach photosignal defeated
Time T out is continued waiting for if do not arrived, is otherwise reset and is believed multiplied by penalty coefficient F according to the newest time T2 of one circle of character wheel rotation
Number output time T, and lightening LED lamp output photoelectric signal, resetting LED light time-out time T~, LED light lighting time threshold value is
500ms；Finally whether detection hall signal is overtime, and effective Hall pulse signal is not detected always time-out time T ' is interior,
Then illustrate to have stopped ventilating, removes photosignal and export time T, stop signal output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910249558.6A CN110006510A (en) | 2019-03-29 | 2019-03-29 | A kind of calibration method of electron temperature temperature-pressure compensation film type gas meter |
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| CN201910249558.6A CN110006510A (en) | 2019-03-29 | 2019-03-29 | A kind of calibration method of electron temperature temperature-pressure compensation film type gas meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864771A (en) * | 2019-11-20 | 2020-03-06 | 浙江威星智能仪表股份有限公司 | Dynamic meter checking method for electronic gas meter |
| CN113970362A (en) * | 2020-07-09 | 2022-01-25 | 成都秦川物联网科技股份有限公司 | Electronic temperature conversion type diaphragm gas meter verification method |
-
2019
- 2019-03-29 CN CN201910249558.6A patent/CN110006510A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864771A (en) * | 2019-11-20 | 2020-03-06 | 浙江威星智能仪表股份有限公司 | Dynamic meter checking method for electronic gas meter |
| CN113970362A (en) * | 2020-07-09 | 2022-01-25 | 成都秦川物联网科技股份有限公司 | Electronic temperature conversion type diaphragm gas meter verification method |
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Application publication date: 20190712 |