CN106248295A - The method of calibration of digital pressure testers based on temperature correction feedback - Google Patents
The method of calibration of digital pressure testers based on temperature correction feedback Download PDFInfo
- Publication number
- CN106248295A CN106248295A CN201610795821.8A CN201610795821A CN106248295A CN 106248295 A CN106248295 A CN 106248295A CN 201610795821 A CN201610795821 A CN 201610795821A CN 106248295 A CN106248295 A CN 106248295A
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- temperature
- pressure
- calibration
- output valve
- temperature sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/04—Means for compensating for effects of changes of temperature, i.e. other than electric compensation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses the method for calibration of a kind of digital pressure testers based on temperature correction feedback.Putting into calorstat including by pressure testers and normal thermometer simultaneously, if choosing dry measure temperature spot, obtaining output valve and the output valve of temperature sensor of normal thermometer displays temperature respectively；When tracing to the source, standard temperature and temperature sensor output valve are adjusted every time；This signal calibration is standard temperature value by temperature adjustmemt by tester, and the pressure AD conversion obtained in conjunction with pressure transducer is worth to pressure show value.The present invention is by based on the calibration of internal temperature sensor devises a kind of digital pressure testers, Temperature correction model is established by linear correction algorithm, adjusting temperature sensor output valve pressure compensation model is normal temperature-pressure compensation model, can effectively reduce the pressure error that temperature sensor drift introduces, improve this digital pressure testers checking precision in allowing temperature range.
Description
Technical field
The invention belongs to pressure testers technical field, particularly relate to digital pressure verification based on temperature correction feedback
The method of calibration of instrument.
Background technology
Pressure testers, is for verifying various pressure transmitter pressure transducer pressure switch differential pressure transmitters numeral
Pressure gauge special pressure tester.Measuring while pressure, also, the pressure percent of institute's measuring pressure and setting and measurement
Electric current Display on the same screen, electric current and electric current percent can be by display menu setectings.Pressure testers uses numerical control pressure source automatic
Pressurization, obtains reference pressure value by high-precision digital pressure transducer, utilizes computer to image processing system identification pressure
Meter reading, according to corresponding manometer vertification regulation, calculates every error amount and makes calibrating conclusion.
Digital precision pressure gauge and digital pressure recorder, utilize the pressure/electricity physical effect of pressure transducer, pass through
Electric signal digitising detection force value, has the features such as digital reading, anti-vibration and power autonomous power supply, is used for calibration detection
Operating pressure table.But lack electric signal measurement function, need to be equipped with electric signal measurement equipment can be used for site pressure transmitter and
The calibration detection of pressure transducer.Digital precision pressure gauge and digital pressure recorder, utilize the pressure/electricity of pressure transducer
Physical effect, by electric signal digitising detection force value, has the features such as digital reading, anti-vibration and power autonomous power supply,
It is used for calibration detection operating pressure table.But lack electric signal measurement function, electric signal measurement equipment need to be equipped with and can be used for existing
The calibration detection of field pressure transmitter and pressure transducer.
Patent ZL200610114103.6 " digital pressure testers " is defeated by being provided with a pressure switch signal in watchcase
Entering terminal and electric signal input end, this pressure switch signal input terminal is directly connected with microcontroller, this signal of telecommunication
Input terminal is then connected with signal measurement unit；Described signal measurement unit includes an input protection circuit, a signal amplifies
Device and an A/D converter, each signal of telecommunication of input through this input protection circuit protect after, pass to successively signal amplifier and
A/D converter, it is provided that the digital pressure testers in a kind of multifunctional application field, but the verification of this digital pressure testers
Precision is relatively low, is easily disturbed by environment such as temperature, causes check results error big.
Summary of the invention
It is an object of the invention to provide the method for calibration of digital pressure testers based on temperature correction feedback, pass through line
Property correction algorithm establish Temperature correction model, adjusting temperature sensor output valve-pressure compensation model is standard temperature-pressure
Compensation model, improves this digital pressure testers checking precision in allowing temperature range, solves digital pressure testers
Checking precision relatively low, easily disturbed by environment such as temperature, caused the problems such as check results error is big.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is the method for calibration of digital pressure testers based on temperature correction feedback, comprises the steps:
Step one, puts into calorstat by pressure testers and normal thermometer simultaneously, and Criterion temperature and pressure compensates mould
Type；
Step 2, if choosing dry measure temperature spot T1, T2, T3 ..., Tn, obtain normal thermometer displays temperature respectively
Output valve and the output valve of temperature sensor, set up Temperature correction model；
Step 3, when tracing to the source, is adjusted standard temperature and temperature sensor output valve every time；
Step 4, temperature sensor obtains scene temperature signal, and it is mark that tester passes through temperature adjustmemt by this signal calibration
Quasi-temperature value, the pressure AD conversion obtained in conjunction with pressure transducer is worth to pressure show value.
Further, described pressure testers is HX601B intelligent digital pressure testers or CST273 intelligent digital pressure
Tester.
Further, the Temperature correction model of setting up of described step 2 is that temperature sensor output valve is calibrated to standard
Value, and show in LED screen, establishment host computer procedure reads temperature sensor output valve, by corresponding standard value and output
Value sends to tester.
Further, when described step 3 is traced to the source every time, standard temperature and temperature sensor output valve are adjusted；
Also include the setting of temperature range and calibration point, by starting host computer procedure, temperature range is set.
Further, described step 4, temperature sensor obtains scene temperature signal, and tester should by temperature adjustmemt
Signal calibration is that the concrete mode of standard temperature value is: tester built-in temperature sensor obtains temperature value output x, standard temperature
Meter obtains temperature value output y, x and y imports establishment host computer procedure and reads temperature sensor output valve, by corresponding standard value
Send to tester with output valve.
Further, described step one, pressure testers and normal thermometer are put into calorstat, Criterion temperature simultaneously
Degree-pressure compensation model；It it is that the standard temperature value obtained is sent to the standard temperature-pressure compensation model set up, it is thus achieved that school
Force value after standard, and shown in LED screen.
Further, described standard temperature-pressure compensation model is by the while of by pressure testers and normal thermometer
Putting into calorstat, the computer being provided with host computer procedure is placed on outside calorstat, by RS232 cable by tester and calculating
Machine is connected.
The method have the advantages that
The present invention by based on devising a kind of digital pressure testers to the calibration of internal temperature sensor, by linearly
Correction algorithm establishes Temperature correction model, and adjusting temperature sensor output valve-pressure compensation model is that standard temperature-pressure is mended
Repay model, it is possible to effectively reduce the pressure error that temperature sensor drift introduces, improve this digital pressure testers and allowing temperature
Checking precision in the range of degree.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below in conjunction with in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the present invention
In embodiment, those of ordinary skill in the art obtained under not making creative work premise all other implement
Example, broadly falls into the scope of protection of the invention.
The method of calibration of a kind of based on temperature correction feedback the digital pressure testers of the present invention, comprises the steps:
Step one, puts into calorstat by pressure testers and normal thermometer simultaneously, and Criterion temperature and pressure compensates mould
Type；
Step 2, if choosing dry measure temperature spot T1, T2, T3 ..., Tn, obtain normal thermometer displays temperature respectively
Output valve and the output valve of temperature sensor, set up Temperature correction model；
Step 3, when tracing to the source, is adjusted standard temperature and temperature sensor output valve every time；
Step 4, temperature sensor obtains scene temperature signal, and it is mark that tester passes through temperature adjustmemt by this signal calibration
Quasi-temperature value, the pressure AD conversion obtained in conjunction with pressure transducer is worth to pressure show value.
Wherein, pressure testers is HX601B intelligent digital pressure testers or CST273 intelligent digital pressure testers.
Wherein, the Temperature correction model of setting up of step 2 is that temperature sensor output valve is calibrated to standard value, and shows
In LED screen, establishment host computer procedure reads temperature sensor output valve, sends corresponding standard value and output valve to school
Test instrument；Utilize and linearly revise principle, tester original program increases temperature adjustmemt program, output valve is calibrated to standard value.
Wherein, when step 3 is traced to the source every time, standard temperature and temperature sensor output valve are adjusted；Also include temperature
Tolerance journey and the setting of calibration point, by starting host computer procedure, arrange the temperature range upper limit be 40 DEG C, lower limit be 0 DEG C, calibration
Count is 5；；Ordered by " transmission ", the data in current information frame are sent to tester；Computer is according to the upper limit, lower limit
And calibrate count calculating automatically generation temperature list on computers.
Wherein, step 4, temperature sensor obtains scene temperature signal, and tester passes through temperature adjustmemt by this signal calibration
Concrete mode for standard temperature value is: tester built-in temperature sensor obtains temperature value output x, and normal thermometer obtains temperature
Degree output valve y, imports x and y establishment host computer procedure and reads temperature sensor output valve, by corresponding standard value and output valve
Send to tester.
Wherein, step one, pressure testers and normal thermometer are put into calorstat simultaneously, host computer procedure is installed
Computer is placed on outside calorstat, is connected with computer by tester by RS232 cable, and Criterion temperature and pressure is mended
Repay model；It is that the standard temperature value obtained is sent to the standard temperature-pressure compensation model set up, it is thus achieved that the pressure after calibration
Value, and shown in LED screen.
Wherein, standard temperature-pressure compensation model is by pressure testers and normal thermometer are put into constant temperature simultaneously
Case, the computer being provided with host computer procedure is placed on outside calorstat, is connected with computer by tester by RS232 cable
Connect.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or feature in conjunction with this embodiment or example description is contained at least one enforcement of the present invention
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (7)
1. the method for calibration of digital pressure testers based on temperature correction feedback, it is characterised in that: comprise the steps:
Step one, puts into calorstat, Criterion temperature and pressure compensation model by pressure testers and normal thermometer simultaneously；
Step 2, if choosing dry measure temperature spot T1, T2, T3 ..., Tn, obtain the defeated of normal thermometer displays temperature respectively
Go out the output valve of value and temperature sensor, set up Temperature correction model；
Step 3, when tracing to the source, is adjusted standard temperature and temperature sensor output valve every time；
Step 4, temperature sensor obtains scene temperature signal, and this signal calibration is standard temperature by temperature adjustmemt by tester
Angle value, the pressure AD conversion obtained in conjunction with pressure transducer is worth to pressure show value.
The method of calibration of digital pressure testers based on temperature correction feedback the most according to claim 1, its feature exists
In, described pressure testers is HX601B intelligent digital pressure testers or CST273 intelligent digital pressure testers.
The method of calibration of digital pressure testers based on temperature correction feedback the most according to claim 1, its feature exists
In, the Temperature correction model of setting up of described step 2 is that temperature sensor output valve is calibrated to standard value, and shows in LED screen
On curtain, establishment host computer procedure reads temperature sensor output valve, sends corresponding standard value and output valve to tester.
The method of calibration of digital pressure testers based on temperature correction feedback the most according to claim 1, its feature exists
In, when described step 3 is traced to the source every time, standard temperature and temperature sensor output valve are adjusted；Also include temperature range
With the setting of calibration point, by starting host computer procedure, temperature range is set.
The method of calibration of digital pressure testers based on temperature correction feedback the most according to claim 1, its feature exists
In, described step 4, temperature sensor obtains scene temperature signal, and this signal calibration is standard by temperature adjustmemt by tester
The concrete mode of temperature value is: tester built-in temperature sensor obtains temperature value output x, and normal thermometer obtains temperature output
Value y, imports x and y establishment host computer procedure and reads temperature sensor output valve, corresponding standard value and output valve are sent extremely
Tester.
The method of calibration of digital pressure testers based on temperature correction feedback the most according to claim 1, its feature exists
In, described step one, pressure testers and normal thermometer are put into simultaneously calorstat, Criterion temperature and pressure compensates mould
Type；It is that the standard temperature value obtained is sent to the standard temperature-pressure compensation model set up, it is thus achieved that the force value after calibration,
And shown in LED screen.
7. according to the method for calibration of the digital pressure testers based on temperature correction feedback described in claim 1 or 6, its feature
Being, described standard temperature-pressure compensation model is by pressure testers and normal thermometer are put into calorstat simultaneously, peace
Computer equipped with host computer procedure is placed on outside calorstat, is connected with computer by tester by RS232 cable.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908197A (en) * | 2017-03-02 | 2017-06-30 | 成都信息工程大学 | Bearing calibration is demarcated in a kind of pressure gauge temperature drift |
| CN107702848A (en) * | 2017-10-25 | 2018-02-16 | 北京航天发射技术研究所 | A kind of sensor online calibration method in special purpose vehicle |
| CN109143053A (en) * | 2018-08-23 | 2019-01-04 | 国网河北省电力有限公司沧州供电分公司 | Temperature-compensating method of calibration and terminal device |
| CN109470407A (en) * | 2018-11-15 | 2019-03-15 | 北京华航无线电测量研究所 | The calibration method of distributed multinode fluid temperature, pressure sensor measurement data |
| CN109540340A (en) * | 2018-11-15 | 2019-03-29 | 北京华航无线电测量研究所 | The calibration method of fluid temperature, pressure monitoring sensor in a kind of pipeline |
| CN110617916A (en) * | 2019-09-29 | 2019-12-27 | 歌尔股份有限公司 | Calibration method and device of air pressure sensor |
| CN112484916A (en) * | 2020-11-27 | 2021-03-12 | 北京航天计量测试技术研究所 | Temperature response characteristic calibration method for patch type pressure sensor |
| CN113375858A (en) * | 2021-06-24 | 2021-09-10 | 北京康斯特仪表科技股份有限公司 | Pressure controller and pressure calibration method based on same |
| CN114152808A (en) * | 2020-09-08 | 2022-03-08 | 武汉国测数据技术有限公司 | Intelligent electric meter with error self-checking function and checking method thereof |
| CN117968934A (en) * | 2024-03-11 | 2024-05-03 | 北京精微致合测试技术有限公司 | Intelligent compensation system for pressure sensor detection |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908197A (en) * | 2017-03-02 | 2017-06-30 | 成都信息工程大学 | Bearing calibration is demarcated in a kind of pressure gauge temperature drift |
| CN106908197B (en) * | 2017-03-02 | 2019-03-15 | 成都信息工程大学 | A kind of pressure gauge temperature drift calibration bearing calibration |
| CN107702848A (en) * | 2017-10-25 | 2018-02-16 | 北京航天发射技术研究所 | A kind of sensor online calibration method in special purpose vehicle |
| CN109143053A (en) * | 2018-08-23 | 2019-01-04 | 国网河北省电力有限公司沧州供电分公司 | Temperature-compensating method of calibration and terminal device |
| CN109143053B (en) * | 2018-08-23 | 2020-12-01 | 国网河北省电力有限公司沧州供电分公司 | Temperature compensation calibration method and terminal equipment |
| CN109540340B (en) * | 2018-11-15 | 2020-10-09 | 北京华航无线电测量研究所 | Calibration method for liquid temperature and pressure monitoring sensor in pipeline |
| CN109470407B (en) * | 2018-11-15 | 2020-10-09 | 北京华航无线电测量研究所 | Method for calibrating measurement data of distributed multi-node liquid temperature and pressure sensor |
| CN109540340A (en) * | 2018-11-15 | 2019-03-29 | 北京华航无线电测量研究所 | The calibration method of fluid temperature, pressure monitoring sensor in a kind of pipeline |
| CN109470407A (en) * | 2018-11-15 | 2019-03-15 | 北京华航无线电测量研究所 | The calibration method of distributed multinode fluid temperature, pressure sensor measurement data |
| CN110617916A (en) * | 2019-09-29 | 2019-12-27 | 歌尔股份有限公司 | Calibration method and device of air pressure sensor |
| CN110617916B (en) * | 2019-09-29 | 2021-08-31 | 潍坊歌尔微电子有限公司 | Calibration method and device of air pressure sensor |
| CN114152808A (en) * | 2020-09-08 | 2022-03-08 | 武汉国测数据技术有限公司 | Intelligent electric meter with error self-checking function and checking method thereof |
| CN114152808B (en) * | 2020-09-08 | 2024-03-15 | 武汉国测数据技术有限公司 | Smart electric meter with error self-checking function and checking method thereof |
| CN112484916A (en) * | 2020-11-27 | 2021-03-12 | 北京航天计量测试技术研究所 | Temperature response characteristic calibration method for patch type pressure sensor |
| CN113375858A (en) * | 2021-06-24 | 2021-09-10 | 北京康斯特仪表科技股份有限公司 | Pressure controller and pressure calibration method based on same |
| CN117968934A (en) * | 2024-03-11 | 2024-05-03 | 北京精微致合测试技术有限公司 | Intelligent compensation system for pressure sensor detection |
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