CN106092375B - The method of calibration and tester of airborne equipment surface temperature sensor - Google Patents
The method of calibration and tester of airborne equipment surface temperature sensor Download PDFInfo
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Abstract
The present invention provides a kind of method of calibration of airborne equipment surface temperature sensor, is verified to temperature sensor using standard electric furnace, standard furnace temperature is adjusted to the minimum of temperature sensor range first, be modified to zero value；Standard furnace temperature is adjusted to the peak of temperature sensor range again, linear value is modified；Standard furnace temperature is adjusted to the arbitrary median of temperature sensor range, and calculate gathered data actual value using revised zero value and linear value, judge whether to meet linear relationship according to above-mentioned 1 points, judge whether temperature sensor is qualified according to linear relationship, quickly and easily realizes the verification to temperature sensor.
Description
Technical field
The present invention relates to a kind of methods of calibration and tester of airborne equipment surface temperature sensor, can be widely applied to
Chemical industry, Medical Devices, airborne equipment.
Background technology
With the continuous improvement of industrial production automation degree, demand day of the industrial production enterprise to field calibration is aobvious prominent
Go out.Live thermometric calibrating installation is increasingly used for industrial temperature field calibration.Needed in many industries to temperature into
Row Detection & Controling.Common temperature detecting element is platinum resistance, thermocouple thermometer, usually using water-bath when calibrating/calibration
Or the thermostats such as oil bath, as constant temperature field, the preferable stability of temperature uniformity of this kind of thermostat is high, influenced by ambient temperature it is small,
But the volume of this kind of thermostat is all huger, and temperature stabilization times are longer, cannot be satisfied the needs of live rapid verification or calibration.
Invention content
In order to solve the problems existing in the prior art, the present invention provides a kind of verification side of airborne equipment surface temperature sensor
Method verifies temperature sensor using verification stove, quickly judges whether temperature sensor is normal.
The method of calibration of airborne equipment surface temperature sensor provided by the invention, includes the following steps；
(1) verification furnace temperature is adjusted to the range minimum of temperature sensor, and is denoted as the practical minimum target of gathered data
Value, temperature sensor are inserted into verification stove, obtain the sampled value of the output signal of Current Temperatures sensor；
(2) minimum gathered data actual value is calculated according to the sampled value of electric signal, calculation formula is：
Wherein：Linear value takes 1, and zero value takes 0, measures the upper limit, in the measuring range that measurement lower limit is the temperature sensor
Limit, lower limit, the signal upper limit, the upper limit for the output signal that restricting the number lower limit is the temperature sensor, lower limit；
(3) revised zero is calculated according to minimum gathered data actual value and the practical minimum target value of gathered data
Value, calculation formula are：
The practical minimum target value of zero value=gathered data-minimum gathered data actual value is 2.；
(4) verification furnace temperature is adjusted to the range peak of temperature sensor, and is denoted as the practical maximum target of gathered data
Value obtains the sampled value of the output signal of Current Temperatures sensor；Maximum gathered data actual value is 1. calculated according to formula,
Wherein, linear value takes 1, and zero value is the revised zero value being calculated in step (3), measures the upper limit, measurement lower limit is
The measuring range upper limit of the temperature sensor, lower limit, the signal upper limit, restricting the number lower limit be the temperature sensor output signal it is upper
Limit, lower limit；
(5) according to maximum gathered data actual value, the practical maximum target value of gathered data, minimum gathered data actual value and
Revised linear value is calculated in the practical minimum target value of gathered data, and calculation formula is：
(6) verification furnace temperature is adjusted to the arbitrary median in temperature sensor measurement range ability, obtains Current Temperatures
The sampled value of the output signal of sensor；Current gathered data actual value is 1. calculated according to formula, wherein zero value is
The revised zero value being calculated in step (3), linear value are the revised linear value being calculated in step (5),
The measurement upper limit, measurement lower limit are the measuring range upper limit of the temperature sensor, lower limit, and the signal upper limit, restricting the number lower limit are the temperature
The upper limit of the output signal of sensor, lower limit；
(7) judge the acquisition that minimum gathered data actual value, maximum gathered data actual value and step (6) are calculated
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, the temperature sensor is qualified.
Preferably, in the step (6), at least two medians in temperature sensor measurement range ability are selected, and
Calculate corresponding gathered data actual value.
Preferably, in the step (7), if having linear relationship, the temperature sensor is qualified.
Preferably, it should also judge current gathered data actual value and verify the error and temperature sensor between furnace temperature
The relationship of calibrated error, if error is less than or equal to calibration of sensor error, the temperature sensor is qualified.
Preferably, the output signal of temperature sensor is voltage signal or current signal.
Preferably, the verification stove is standard electric furnace.
The present invention also provides a kind of airborne equipment surface temperature sensor calibration instrument, including power module and display screen,
The power module is for being powered airborne equipment surface temperature sensor calibration instrument；It is characterized in that：It further 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 the acquisition module, verification furnace temperature control module, sampling module, data processing unit with
And display module connection；The memory module is connect with the data processing unit, sampling module respectively；The display module with
The display screen connection；
The verification furnace temperature control module verifies the temperature of stove according to the Numerical Control that described control unit exports；
Output signal according to the output signal for collecting temperature sensor and is stored in memory module by the sampling module；
The data processing unit read from memory module data and perform claim require step (2) described in 1 or 2,
(3), the calculating of the maximum gathered data actual value and gathered data actual value in (5), (7) and step (4), (6), and will
Judging result in step (7) is sent to control unit；
The data acquisition module is practical for receiving the practical minimum target value of gathered data input by user, gathered data
Maximum target value and temperature sensor measurement range median are simultaneously sent to described control unit；
Described control unit is used to receive the data of the data acquisition module output and is stored in memory module and transmission
To the verification furnace temperature control module；Described control unit is additionally operable to the judging result for exporting data processing unit hair
Give the display module；
The judging result driving display screen that the display module is exported according to control unit is shown.
The method of calibration of airborne equipment surface temperature sensor provided by the invention, using standard electric furnace to temperature sensor
It is verified, standard furnace temperature is adjusted to the minimum of temperature sensor range first, zero value is modified；Again will
Standard furnace temperature is adjusted to the peak of temperature sensor range, is modified to linear value；Standard furnace temperature is adjusted
Gathered data reality is calculated to the arbitrary median of temperature sensor range, and using revised zero value and linear value
Value, judges whether to meet linear relationship, judges whether temperature sensor closes according to linear relationship according to above-mentioned 1 points
Lattice quickly and easily realize the verification to temperature sensor.It the composite can be widely applied to chemical industry, Medical Devices, airborne equipment.
Description of the drawings
Fig. 1 is airborne equipment surface temperature sensor calibration apparatus structure block diagram of the present invention.
Specific implementation mode
The practical minimum target value of zero value=gathered data-minimum gathered data actual value is 2.；
Embodiment one：
In conjunction with Fig. 1, Pt100 temperature sensors are verified using standard electric furnace, the output of the Pt100 temperature sensors
Voltage range is 1-5V, i.e., signal lower limit is 1, and the signal upper limit is 5, and measuring temperature range is 0-600 DEG C, i.e., measurement lower limit is 0,
It is 0.6% that the measurement upper limit, which is 600, Pt100 calibration of sensor errors, 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 control is single
The data are stored in memory module by member, while being sent to verification furnace temperature control module, verify furnace temperature control module by standard
Furnace temperature value is adjusted to 0 DEG C, i.e. the practical minimum target value of gathered data is 0, and Pt100 temperature sensors are inserted into standard electric furnace,
After equal Pt100 temperature sensor parameter stabilities, sampling module gets the voltage value of current Pt100 temperature sensors output, adopts
The sampled value that egf block obtains is 1.0006666667V, and sampled value is stored in memory module；
(2) data processing unit is from reading the practical minimum target value of gathered data, sampled value, in measurement in memory module
1. limit, measurement lower limit, the signal upper limit, signal lower limit calculate minimum gathered data actual value according to formula, wherein linear value
It is respectively 1 and 0 with zero value；It will be minimum
Gathered data actual value is stored in memory module；
(3) data processing unit reads the practical minimum target value of gathered data, minimum gathered data reality from memory module
2. value, zero value=0-0.1=-0.1 is calculated according to formula, zero value is stored in memory module；
(4) user inputs 600 DEG C by tester, and acquisition module transmits the data to control unit after receiving, and controls
The data are stored in memory module by unit, while being sent to verification furnace temperature control module, and verification furnace temperature control module will be marked
Quasi- furnace temperature value is adjusted to 600 DEG C, the i.e. practical maximum target value 600 of gathered data, and Pt100 temperature sensors are inserted into standard electric
After waiting Pt100 temperature sensor parameter stabilities, the voltage of current Pt100 temperature sensors output is obtained using sampling module for stove
Value, the sampled value that sampling module obtains are 5.00266667V, and sampled value is stored in memory module；
(5) data processing unit read from memory module the practical maximum target value of gathered data, sampled value, zero value,
The upper limit, measurement lower limit, the signal upper limit, signal lower limit are measured, maximum sampled data actual value is 1. calculated according to formula, wherein
Linear value and zero value are respectively 1 and -0.1；It will
Maximum gathered data actual value is stored in memory module；
(6) data storage cell reads the practical minimum of the practical maximum target value of gathered data, gathered data from memory module
3. desired value, maximum gathered data actual value, minimum gathered data actual value, are calculated 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
The data are stored in memory module by unit, while being sent to verification furnace temperature control module, and verification furnace temperature control module will be marked
Quasi- furnace temperature value is adjusted to 300 DEG C, and Pt100 temperature sensors are inserted into standard electric furnace, wait Pt100 temperature sensor parameter stabilities
Afterwards, the voltage value of current Pt100 temperature sensors output is obtained using sampling module, the sampled value that sampling module obtains is
Sampled value is stored in memory module by 1.67V；
(8) data processing unit is under reading sampled value, linear value, zero value, the measurement upper limit, measurement in memory module
1. limit, the signal upper limit, signal lower limit calculate gathered data actual value according to formula, wherein linear value and zero value is respectively 3
With -0.1,
(9) with (1.0006666667,0.1), (5.00266667,600.3), (1.67,301.4) are coordinate points, are sitting
It is marked on parameter, and judges whether (1.67,301.4) are linked to be in (1.0006666667,0.1) and (5.00266667,600.3)
Straight line on, not point-blank due to 3 points, the Pt100 temperature sensors are unqualified, need depot repair, data
Storage unit sends the underproof result of temperature sensor to control unit, is believed correlation by control unit control display module
Breath display is on a display screen.
Embodiment two：
Pt100 temperature sensors are verified using standard electric furnace, the output current scope of the Pt100 temperature sensors
For 10-20mA, i.e. signal lower limit is 10, and the signal upper limit is 20, and measuring temperature range is 0-300 DEG C, i.e., measurement lower limit is 0, is surveyed
It is 0.6% that the amount upper limit, which is 300, Pt100 calibration of sensor errors,.
(1) standard furnace temperature value is adjusted to 0 DEG C, i.e. the practical minimum target value of gathered data is 0, and Pt100 temperature is passed
Sensor is inserted into standard electric furnace, after waiting Pt100 temperature sensor parameter stabilities, obtains current Pt100 temperature using sampling module and passes
The current value of sensor output, the sampled value that sampling module obtains are 10.00001mA；
(2) minimum gathered data actual value is 1. calculated according to formula, wherein linear value and zero value are respectively 1 and 0；
(3) zero value=0-0.0003=-0.0003 is 2. calculated according to formula；
(4) standard furnace temperature value is adjusted to 300 DEG C, i.e. the practical maximum target value of gathered data is 300, by Pt100 temperature
It spends sensor and is inserted into standard electric furnace, after waiting Pt100 temperature sensor parameter stabilities；Current Pt100 temperature is obtained using sampling module
The current value of sensor output is spent, the sampled value that sampling module obtains is 20.00002mA；
(5) maximum sampled data actual value is 1. calculated according to formula, wherein linear value and zero value be respectively 1 and-
0.0003；
(6) it is 3. calculated according to formula
(7) standard furnace temperature value is adjusted to 100 DEG C, Pt100 temperature sensors is inserted into standard electric furnace, wait Pt100 temperature
After spending sensor parameters stabilization, the current value of current Pt100 temperature sensors output is obtained using sampling module, sampling module obtains
The sampled value arrived is 13.33336mA；Gathered data actual value, wherein linear value and zero value difference are 1. calculated according to formula
For 1 and -0.0003,
(8) standard furnace temperature value is adjusted to 200 DEG C, Pt100 temperature sensors is inserted into standard electric furnace, wait Pt100 temperature
After spending sensor parameters stabilization, the current value of current Pt100 temperature sensors output is obtained using sampling module, sampling module obtains
The sampled value arrived is 16.66669mA；Gathered data actual value, wherein linear value and zero value difference are 1. calculated according to formula
For 1 and -0.0003,
(9) with (10.00001,0.0003), (20.00002,300.0003), (13.33336,100.0005),
(16.66669,200.0004) it is coordinate points, is marked in reference axis, and judge (13.33336,100.0005),
(16.66669,200.0004) whether on the straight line that (10.00001,0.0003), (20.00002,300.0003) are linked to be, by
In (13.33336,100.0005), (16.66669,200.0004) approximation is fallen in (10.00001,0.0003), (20.00002,
300.0003) on the straight line being linked to be, there is linear dependence, meanwhile, standard furnace temperature is adjusted to 100 and is adopted with temperature sensor
The error for collecting data actual value 100.0005 is less than 0.6%, and standard furnace temperature is adjusted to the gathered data of 200 and temperature sensor
The error of actual value 200.0004 is less than 0.6%, within the scope of the calibrated error of Pt100 temperature sensors, therefore the Pt100 temperature
It is qualified to spend sensor.
Claims (7)
1. a kind of method of calibration of airborne equipment surface temperature sensor, which is characterized in that include the following steps；
(1) verification furnace temperature is adjusted to the range minimum of temperature sensor, and is denoted as the practical minimum target value of gathered data, temperature
It spends sensor and is inserted into verification stove, obtain the sampled value of the output signal of Current Temperatures sensor；
(2) minimum gathered data actual value is calculated according to the sampled value of electric signal, calculation formula is：
Wherein：Linear value takes 1, and zero value takes 0, measure the upper limit, the measuring range upper limit that measurement lower limit is the temperature sensor, under
Limit, the signal upper limit, the upper limit for the output signal that restricting the number lower limit is the temperature sensor, lower limit；
(3) revised zero value is calculated according to minimum gathered data actual value and the practical minimum target value of gathered data,
Calculation formula is：
The practical minimum target value of zero value=gathered data-minimum gathered data actual value is 2.；
(4) verification furnace temperature is adjusted to the range peak of temperature sensor, and is denoted as the practical maximum target value of gathered data, obtains
Take the sampled value of the output signal of Current Temperatures sensor；Maximum gathered data actual value is 1. calculated according to formula, wherein
Zero value is the revised zero value being calculated in step (3)；
(5) according to maximum gathered data actual value, the practical maximum target value of gathered data, minimum gathered data actual value and acquisition
Revised linear value is calculated in the practical minimum target value of data, and calculation formula is：
(6) verification furnace temperature is adjusted to the arbitrary median in temperature sensor measurement range ability, obtains Current Temperatures sensing
The sampled value of the output signal of device；Current gathered data actual value is 1. calculated according to formula, wherein zero value is step
(3) the revised zero value being calculated in, linear value are the revised linear value being calculated in step (5)；
(7) judge the gathered data that minimum gathered data actual value, maximum gathered data actual value and step (6) are calculated
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
With linear relationship, then the temperature sensor is qualified.
2. the method for calibration of airborne equipment surface temperature sensor as described in claim 1, it is characterised in that：The step
(6) in, at least two medians in temperature sensor measurement range ability are selected, and it is practical to calculate corresponding gathered data
Value.
3. the method for calibration of airborne equipment surface temperature sensor as claimed in claim 1 or 2, it is characterised in that：The step
Suddenly in (7), if having linear relationship, the 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：It should also judge to work as
The relationship of error and calibration of sensor error between preceding gathered data actual value and verification furnace temperature, if error is small
In or equal to calibration of sensor error, then the 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：The school
It is standard electric furnace to test stove.
7. a kind of airborne equipment surface temperature sensor calibration instrument, including power module and display screen, the power module is used
It is powered in airborne equipment surface temperature sensor calibration instrument；It is characterized in that：It further include verification furnace temperature control mould
Block, sampling module, data processing unit, control unit, memory module, acquisition module and display module；Described control unit
It is connect respectively with the acquisition module, verification furnace temperature control module, sampling module, data processing unit and display module；
The memory module is connect with the data processing unit, sampling module respectively；The display module is connect with the display screen；
The verification furnace temperature control module verifies the temperature of stove according to the Numerical Control that described control unit exports；
Output signal according to the output signal for collecting temperature sensor and is stored in memory module by the sampling module；
The data processing unit read from memory module data and perform claim require step (2) described in 1 or 2, (3),
(5), the calculating of (7) and maximum gathered data actual value and gathered data actual value in step (4), (6), and by step
(7) judging result in is sent to control unit；
The data acquisition module is practical maximum for receiving the practical minimum target value of gathered data input by user, gathered data
Desired value and temperature sensor measurement range median are simultaneously sent to described control unit；
Described control unit is used to receive the data of the data acquisition module output and is stored in memory module and is sent to institute
State verification furnace temperature control module；Described control unit is additionally operable to the judging result that the data processing unit exports being sent to
The display module；
The judging result driving display screen that the display module is exported according to control unit is shown.
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| CN107703843B (en) * | 2017-09-01 | 2020-03-10 | 珠海格力电器股份有限公司 | Wind pressure control method and device of unit, storage medium and unit |
| DE102018133618A1 (en) * | 2018-12-27 | 2020-07-02 | SIKA Dr. Siebert & Kühn GmbH & Co. KG | Calibration setup for calibrating a temperature sensor and process therefor |
| CN111486810B (en) * | 2020-05-22 | 2025-06-06 | 山西慧达澳星科技有限公司 | A device and method for real-time online detection of conveyor belt thickness |
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| CN112617299B (en) * | 2021-01-19 | 2023-06-02 | 河南中烟工业有限责任公司 | Temperature detection method and temperature stability analysis method for heating cigarette smoking set |
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