CN106092375A - The method of calibration of airborne equipment surface temperature sensor and tester - Google Patents
The method of calibration of airborne equipment surface temperature sensor and tester Download PDFInfo
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- CN106092375A CN106092375A CN201610716768.8A CN201610716768A CN106092375A CN 106092375 A CN106092375 A CN 106092375A CN 201610716768 A CN201610716768 A CN 201610716768A CN 106092375 A CN106092375 A CN 106092375A
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention provides the method for calibration of a kind of airborne equipment surface temperature sensor, utilizes standard electric furnace to verify temperature sensor, first standard electric furnace temperature is adjusted to the minimum of temperature sensor range, be modified zero point value；Standard electric furnace temperature is adjusted to the peak of temperature sensor range again, linear value is modified；Standard electric furnace temperature is adjusted to any intermediate value of temperature sensor range, and utilize revised zero point value and linear value to calculate collection data actual value, judge whether to meet linear relationship according to above-mentioned at least three point, judge that temperature sensor is the most qualified according to linear relationship, realize the verification to temperature sensor quickly and easily.
Description
Technical field
The present invention relates to method of calibration and the tester of a kind of airborne equipment surface temperature sensor, can be widely applied to
Chemical industry, armarium, airborne equipment.
Background technology
Along with improving constantly of industrial production automation degree, commercial production enterprise is aobvious prominent to the demand day of field calibration
Go out.On-the-spot thermometric calibrating installation is increasingly used for industrial temperature field calibration.Many industries need to enter temperature
Row Detection & Controling.Conventional detector unit is platinum resistance, thermocouple thermometer, generally uses water-bath during calibrating/calibration
Or the temperature chamber such as oil bath is as constant temperature field, the preferable degree of stability of temperature homogeneity of this kind of temperature chamber is high, is affected little by ambient temperature,
But the volume of this kind of temperature chamber is the hugest, and temperature stabilization times is longer, it is impossible to meet on-the-spot rapid verification or the needs of calibration.
Summary of the invention
For solving the problem that prior art exists, the present invention provides the verification side of a kind of airborne equipment surface temperature sensor
Method, utilizes verification stove to verify temperature sensor, quickly judges that temperature sensor is the most normal.
The method of calibration of the airborne equipment surface temperature sensor that the present invention provides, comprises the following steps；
(1) verification furnace temperature is adjusted to the range minimum of temperature sensor, and is designated as gathering the actual minimum target of data
Value, temperature sensor is inserted verification stove, is obtained the sampled value of the output signal of Current Temperatures sensor；
(2) calculating collection data actual minimum according to the sampled value of the signal of telecommunication, computing formula is:
Wherein: linear value takes 1, zero point value takes 0, and the measurement upper limit, measurement lower limit are on the measurement range of this temperature sensor
Limit, lower limit, the signal upper limit, restricting the number lower limit are the upper limit of output signal of this temperature sensor, lower limit；
(3) revised zero point is calculated according to collection data actual minimum and collection data actual minimum target value
Value, computing formula is:
Zero point value=collection data actual minimum target value-collection data actual minimum is 2.；
(4) verification furnace temperature is adjusted to the range peak of temperature sensor, and is designated as gathering the actual maximum target of data
Value, obtains the sampled value of the output signal of Current Temperatures sensor；1. collection data maximum actual value is calculated according to formula,
Wherein, linear value takes 1, and zero point value is calculated revised zero point value in (3rd) step, and the measurement upper limit, measurement lower limit are
The measurement range upper limit of this temperature sensor, lower limit, the signal upper limit, restricting the number lower limit are the upper of the output signal of this temperature sensor
Limit, lower limit；
(5) according to gather the actual maximum of data, gather data actual maximum target value, gather data actual minimum and
Gathering data actual minimum target value and calculate revised linear value, computing formula is:
(6) any intermediate value that verification furnace temperature is adjusted in temperature sensor measurement range ability, obtains Current Temperatures
The sampled value of the output signal of sensor；1. calculate current collection data actual value according to formula, wherein, zero point value is
Calculated revised zero point value in (3rd) step, linear value is calculated revised linear value in (5th) step,
Measure the upper limit, measurement lower limit is the measurement range upper limit of this temperature sensor, lower limit, and the signal upper limit, restricting the number lower limit are this temperature
The upper limit of the output signal of sensor, lower limit；
(7) judge to gather data actual minimum, gather the actual maximum of data and (6th) the calculated collection of step
Whether there is linear relationship between the coordinate points that data actual value is constituted with the sampled value of corresponding temperature sensor output signal,
If having linear relationship, then this temperature sensor is qualified.
Preferably, in described (6th) step, select at least two intermediate value in temperature sensor measurement range ability, and
Calculate corresponding collection data actual value.
Preferably, in described (7th) step, if having linear relationship, then this temperature sensor is qualified.
Preferably, the error between current collection data actual value and verification furnace temperature and temperature sensor should also be judged
The relation of calibrated error, if error is less than or equal to calibration of sensor error, then this temperature sensor is qualified.
Preferably, the output signal of temperature sensor is voltage signal or current signal.
Preferably, described verification stove is standard electric furnace.
The present invention also provides for a kind of airborne equipment surface temperature sensor calibration instrument, including power module and display screen,
Described power module is for being powered airborne equipment surface temperature sensor calibration instrument；It is characterized in that: also include school
Test furnace temperature control module, sampling module, data processing unit, control unit, memory module, acquisition module and display mould
Block；Described control unit respectively with described acquisition module, verification furnace temperature control module, sampling module, data processing unit with
And display module connects；Described memory module is connected with described data processing unit, sampling module respectively；Described display module with
Described display screen connects；
The temperature of the numerical control verification stove that described verification furnace temperature control module exports according to described control unit；
Output signal according to the output signal for collecting temperature sensor and is stored in memory module by described sampling module；
Described data processing unit read from memory module data and perform the step (2) described in claim 1 or 2,
(3), (5), the actual maximum of collection data in (7) and step (4), (6) and gather the calculating of data actual value, and will
Judged result in step (7) is sent to control unit；
Described data acquisition module is for receiving the collection data actual minimum target value of user's input, gathering data reality
Maximum target value and temperature sensor measurement range intermediate value are also sent to described control unit；
Described control unit is for receiving the data of described data acquisition module output and being stored in memory module and transmission
To described verification furnace temperature control module；The judged result that described control unit is additionally operable to described data processing unit exports is sent out
Give described display module；
Described display module drives display screen to show according to the judged result that control unit exports.
The method of calibration of the airborne equipment surface temperature sensor that the present invention provides, utilizes standard electric furnace to temperature sensor
Verify, first standard electric furnace temperature is adjusted to the minimum of temperature sensor range, zero point value is modified；Again will
Standard electric furnace temperature is adjusted to the peak of temperature sensor range, is modified linear value；Standard electric furnace temperature is adjusted
To any intermediate value of temperature sensor range, and it is actual to utilize revised zero point value and linear value to calculate collection data
Value, judges whether to meet linear relationship according to above-mentioned at least three point, judges whether temperature sensor closes according to linear relationship
Lattice, realize the verification to temperature sensor quickly and easily.The composite can be widely applied to chemical industry, armarium, airborne equipment.
Accompanying drawing explanation
Fig. 1 is airborne equipment surface temperature sensor calibration apparatus structure block diagram of the present invention.
Detailed description of the invention
Zero point value=collection data actual minimum target value-collection data actual minimum is 2.；
Embodiment one:
In conjunction with Fig. 1, use standard electric furnace that Pt100 temperature sensor is verified, the output of this Pt100 temperature sensor
Voltage range is 1-5V, i.e. signal lower limit is 1, and the signal upper limit is 5, measures temperature range and is 0-600 DEG C, i.e. measurement lower limit is 0,
Measuring the upper limit is 600, and Pt100 calibration of sensor error is 0.6%, measures the upper limit, measurement lower limit, the signal upper limit, signal
Lower limit is stored in memory module.
(1) user inputs 0 DEG C by tester, and acquisition module transmits the data to control unit after receiving, and controls single
These data are stored in memory module by unit, are sent simultaneously to verify furnace temperature control module, and verification furnace temperature control module is by standard
Furnace temperature value is adjusted to 0 DEG C, and i.e. gathering data actual minimum target value is 0, and Pt100 temperature sensor is inserted standard electric furnace,
After Pt100 temperature sensor parameter stability, sampling module gets the magnitude of voltage of current Pt100 temperature sensor output, adopts
The sampled value that original mold block obtains is 1.0006666667V, and sampled value is stored in memory module；
(2) data processing unit reads in collection data actual minimum target value, sampled value, measurement from memory module
Limit, measurement lower limit, the signal upper limit, signal lower limit, 1. calculate collection data actual minimum, wherein, linear value according to formula
It is respectively 1 and 0 with zero point value；To gather
Data actual minimum is stored in memory module；
(3) data processing unit reads from memory module and gathers data actual minimum target value, gathers data reality minimum
Value, 2. calculates zero point value=0-0.1=-0.1, zero point value is stored in memory module according to formula；
(4) user inputs 600 DEG C by tester, and acquisition module transmits the data to control unit after receiving, and controls
These data are stored in memory module by unit, are sent simultaneously to verify furnace temperature control module, and verification furnace temperature control module will mark
Quasi-furnace temperature value is adjusted to 600 DEG C, i.e. gathers data actual maximum target value 600, Pt100 temperature sensor is inserted standard electric
Stove, after waiting Pt100 temperature sensor parameter stability, utilizes sampling module to obtain the voltage of current Pt100 temperature sensor output
Value, the sampled value that sampling module obtains is 5.00266667V, and sampled value is stored in memory module；
(5) data processing unit reads collection data actual maximum target value, sampled value, zero point value, measurement from memory module
The upper limit, measurement lower limit, the signal upper limit, signal lower limit, 1. calculate the actual maximum of sampled data, wherein, linear value according to formula
It is respectively 1 and-0.1 with zero point value；
Actual for collection data maximum is stored in memory module；
(6) data storage cell reads from memory module and gathers data actual maximum target value, gathers data reality minimum
Desired value, the collection actual maximum of data, collection data actual minimum, 3. calculate according to formulaLinear value is stored in memory module；
(7) user inputs 300 DEG C by tester, and acquisition module transmits the data to control unit after receiving, and controls
These data are stored in memory module by unit, are sent simultaneously to verify furnace temperature control module, and verification furnace temperature control module will mark
Quasi-furnace temperature value is adjusted to 300 DEG C, Pt100 temperature sensor is inserted standard electric furnace, waits Pt100 temperature sensor parameter stability
After, utilize sampling module to obtain the magnitude of voltage of current Pt100 temperature sensor output, the sampled value that sampling module obtains is
1.67V, is stored in memory module by sampled value；
(8) data processing unit reads sampled value, linear value, zero point value from memory module, measures under the upper limit, measurement
Limit, the signal upper limit, signal lower limit, 1. calculate collection data actual value according to formula, and wherein linear value and zero point value are respectively 3
With-0.1,
(9) with (1.0006666667,0.1), (5.00266667,600.3), (1.67,301.4) are coordinate points, are sitting
Mark on parameter, and judge whether (1.67,301.4) are linked to be in (1.0006666667,0.1) and (5.00266667,600.3)
Straight line on, due to 3 the most point-blank, therefore this Pt100 temperature sensor is defective, needs depot repair, data
Memory element sends underproof for temperature sensor result to control unit, control unit control display module by relevant letter
Breath display is on a display screen.
Embodiment two:
Pt100 temperature sensor is verified by use standard electric furnace, the output current scope of this Pt100 temperature sensor
Being 10 for 10-20mA, i.e. signal lower limit, the signal upper limit is 20, measures temperature range and is 0-300 DEG C, i.e. measurement lower limit is 0, surveys
The amount upper limit is 300, and Pt100 calibration of sensor error is 0.6%.
(1) standard electric furnace temperature angle value being adjusted to 0 DEG C, i.e. gathering data actual minimum target value is 0, Pt100 temperature is passed
Sensor inserts standard electric furnace, after waiting Pt100 temperature sensor parameter stability, utilizes sampling module to obtain current Pt100 temperature and passes
The current value of sensor output, the sampled value that sampling module obtains is 10.00001mA；
(2) 1. calculating collection data actual minimum according to formula, wherein, linear value and zero point value are respectively 1 and 0；
(3) zero point value=0-0.0003=-0.0003 is 2. calculated according to formula；
(4) standard electric furnace temperature angle value being adjusted to 300 DEG C, i.e. gathering data actual maximum target value is 300, by Pt100 temperature
Degree sensor inserts standard electric furnace, after waiting Pt100 temperature sensor parameter stability；Sampling module is utilized to obtain current Pt100 temperature
The current value of degree sensor output, the sampled value that sampling module obtains is 20.00002mA；
(5) 1. calculate the actual maximum of sampled data according to formula, wherein, linear value and zero point value be respectively 1 and-
0.0003；
(6) 3. calculate according to formula
(7) standard electric furnace temperature angle value is adjusted to 100 DEG C, standard electric furnace is inserted in Pt100 temperature sensor, waits Pt100 temperature
After degree sensor parameters is stable, utilizing sampling module to obtain the current value of current Pt100 temperature sensor output, sampling module obtains
To sampled value be 13.33336mA；1. calculate collection data actual value according to formula, wherein linear value and zero point value are respectively
It is 1 and-0.0003,
(8) standard electric furnace temperature angle value is adjusted to 200 DEG C, standard electric furnace is inserted in Pt100 temperature sensor, waits Pt100 temperature
After degree sensor parameters is stable, utilizing sampling module to obtain the current value of current Pt100 temperature sensor output, sampling module obtains
To sampled value be 16.66669mA；1. calculate collection data actual value according to formula, wherein linear value and zero point value are respectively
It is 1 and-0.0003,
(9) with (10.00001,0.0003), (20.00002,300.0003), (13.33336,100.0005),
(16.66669,200.0004) are coordinate points, mark on coordinate axes, and judge (13.33336,100.0005),
(16.66669,200.0004) whether on (10.00001,0.0003), the straight line that (20.00002,300.0003) are linked to be, by
In (13.33336,100.0005), (16.66669,200.0004) approximation falls in (10.00001,0.0003), (20.00002,
300.0003), on the straight line being linked to be, there is linear dependence, meanwhile, standard electric furnace temperature be adjusted to 100 with the adopting of temperature sensor
The error of collection data actual value 100.0005 is less than 0.6%, and standard electric furnace temperature is adjusted to the collection data of 200 and temperature sensor
The error of actual value 200.0004 is less than 0.6%, in the range of the calibrated error of Pt100 temperature sensor, therefore this Pt100 temperature
Degree sensor is qualified.
Claims (7)
1. the method for calibration of an airborne equipment surface temperature sensor, it is characterised in that comprise the following steps；
(1) verification furnace temperature is adjusted to the range minimum of temperature sensor, and is designated as gathering data actual minimum target value, temperature
Degree sensor inserts verification stove, obtains the sampled value of the output signal of Current Temperatures sensor；
(2) calculating collection data actual minimum according to the sampled value of the signal of telecommunication, computing formula is:
Wherein: linear value takes 1, zero point value takes 0, measure the upper limit, measurement lower limit be this temperature sensor the measurement range upper limit, under
Limit, the signal upper limit, restricting the number lower limit are the upper limit of output signal of this temperature sensor, lower limit；
(3) revised zero point value is calculated according to collection data actual minimum and collection data actual minimum target value,
Computing formula is:
Zero point value=collection data actual minimum target value-collection data actual minimum is 2.；
(4) verification furnace temperature is adjusted to the range peak of temperature sensor, and is designated as gathering data actual maximum target value, obtains
Take the sampled value of the output signal of Current Temperatures sensor；1. calculate according to formula and gather data maximum actual value, wherein,
Zero point value is calculated revised zero point value in (3rd) step；
(5) according to gathering the actual maximum of data, gathering data actual maximum target value, collection data actual minimum and collection
Data actual minimum target value calculates revised linear value, and computing formula is:
(6) any intermediate value that verification furnace temperature is adjusted in temperature sensor measurement range ability, obtains Current Temperatures sensing
The sampled value of the output signal of device；1. calculate current collection data actual value according to formula, wherein, zero point value is
(3) calculated revised zero point value in step, linear value is calculated revised linear value in (5th) step；
(7) judge to gather data actual minimum, gather the actual maximum of data and (6th) step calculated collection data
Whether there is linear relationship between the coordinate points that actual value is constituted with the sampled value of corresponding temperature sensor output signal, if
Have linear relationship, then this temperature sensor is qualified.
2. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 1, it is characterised in that: described (6th)
In step, select at least two intermediate value in temperature sensor measurement range ability, and calculate corresponding collection data actual value.
3. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 1 or 2, it is characterised in that: described the
(7) in step, if having linear relationship, then this temperature sensor is qualified.
4. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 3, it is characterised in that: also should judge to work as
Error between front collection data actual value and verification furnace temperature and the relation of calibration of sensor error, if error is little
In or equal to calibration of sensor error, then this temperature sensor is qualified.
5. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 1 or 2, it is characterised in that: temperature passes
The output signal of sensor is voltage signal or current signal.
6. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 1 or 2, it is characterised in that: described school
Testing stove is standard electric furnace.
7. an airborne equipment surface temperature sensor calibration instrument, including power module and display screen, described power module is used
In airborne equipment surface temperature sensor calibration instrument is powered；It is characterized in that: also include that verifying furnace temperature controls mould
Block, sampling module, data processing unit, control unit, memory module, acquisition module and display module；Described control unit
It is connected with described acquisition module, verification furnace temperature control module, sampling module, data processing unit and display module respectively；
Described memory module is connected with described data processing unit, sampling module respectively；Described display module is connected with described display screen；
The temperature of the numerical control verification stove that described verification furnace temperature control module exports according to described control unit；
Output signal according to the output signal for collecting temperature sensor and is stored in memory module by described sampling module；
Described data processing unit read from memory module data and perform the step (2) described in claim 1 or 2, (3),
(5) the actual maximum of collection data, in (7) and step (4), (6) and gather the calculating of data actual value, and by step
(7) judged result in is sent to control unit；
Described data acquisition module is for receiving the collection data actual minimum target value of user's input, gathering data reality maximum
Desired value and temperature sensor measurement range intermediate value are also sent to described control unit；
Described control unit is for receiving the data of described data acquisition module output and being stored in memory module and be sent to institute
State verification furnace temperature control module；The judged result that described control unit is additionally operable to described data processing unit exports is sent to
Described display module；
Described display module drives display screen to show according to the judged result that control unit exports.
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| CN107703843A (en) * | 2017-09-01 | 2018-02-16 | 珠海格力电器股份有限公司 | Wind pressure control method and device of unit, storage medium and unit |
| CN112617299A (en) * | 2021-01-19 | 2021-04-09 | 河南中烟工业有限责任公司 | Method for detecting temperature of heating cigarette smoking set and method for analyzing temperature stability |
| CN115047391A (en) * | 2022-04-08 | 2022-09-13 | 长沙竹叶电子科技有限公司 | Batch product sampling online calibration method and system |
| CN115951627A (en) * | 2023-03-15 | 2023-04-11 | 秦皇岛轩齐电子科技有限公司 | Based on thing networking PLC control system for industrial control |
| CN111490786B (en) * | 2020-05-28 | 2023-12-29 | 上海金脉汽车电子有限公司 | Calibration method and device of digital-to-analog converter |
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