CN111272292A - Industrial infrared temperature measurement online calibration device and method - Google Patents
Industrial infrared temperature measurement online calibration device and method Download PDFInfo
- Publication number
- CN111272292A CN111272292A CN202010238636.5A CN202010238636A CN111272292A CN 111272292 A CN111272292 A CN 111272292A CN 202010238636 A CN202010238636 A CN 202010238636A CN 111272292 A CN111272292 A CN 111272292A
- Authority
- CN
- China
- Prior art keywords
- temperature
- key
- control panel
- instrument
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000012795 verification Methods 0.000 claims abstract description 13
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 235000009161 Espostoa lanata Nutrition 0.000 claims description 6
- 240000001624 Espostoa lanata Species 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
- G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses an industrial infrared temperature measurement online calibration device and method, which consists of a metal thermocouple head, a lead, an insulating cylinder, a control panel, a battery, a shell, an indicator light and a switch, wherein the metal thermocouple head is connected to the control panel through the lead, and the switch, the indicator light and the battery are electrically connected to the control panel; the heat insulation cylinder is fixed outside the shell, and the battery, the control panel, the switch and the indicator light are fixed in the shell; when the switch is pressed down, the control panel starts to collect the temperature of the metal thermocouple head, the indicator light indicates sampling and communication, data are sent to the verified instrument in real time, and the instrument is calibrated according to a key temperature process point verification method; the key temperature process point inspection method determines one or more key temperature points according to a field process, verifies each key temperature point to obtain a corrected value, and finally obtains a verified temperature value according to a calculation formula through data of the instrument temperature, the key temperature points and the corrected value.
Description
Technical Field
The invention relates to the technical field of infrared temperature measurement, in particular to an industrial infrared temperature measurement online calibration device and method, which are particularly applied to calibration of long-distance infrared temperature measurement equipment.
Background
In 1800 years, the british physicist f.w. huxlel investigated various colors from a thermal point of view, and found infrared rays. Infrared is an electromagnetic wave having the same nature as radio waves and visible light. The infrared ray has a wavelength of 0.76 to 1000 μm, and is classified into four types, near infrared, mid-infrared, far infrared, and far infrared, according to the wavelength range, and the position of the infrared ray in the continuous spectrum of the electromagnetic wave is a region between the radio wave and the visible light. In recent years, the infrared thermometer has the advantages of rapid technical development, perfect performance, continuously enhanced functions, continuously increased varieties and continuously expanded application range. Compared with a contact temperature measurement method, the infrared temperature measurement method has the advantages of fast response time, non-contact, safe use, long service life and the like. The non-contact infrared thermometer is composed of three large series of portable (handheld), on-line scanning, various choices and computer software, and each has various models and specifications.
The infrared thermometer consists of an optical system, a photoelectric detector, a signal amplifier, a signal processing part, a display output part and the like. The optical system converges the infrared radiant energy of the target in the field of view, and the size of the field of view is determined by the optical parts of the thermometer and the position of the optical parts. The infrared energy is focused on the photodetector and converted into a corresponding electrical signal. The signal is converted into the temperature value of the measured target after passing through an amplifier and a signal processing circuit and being corrected according to an algorithm in an instrument and the target emissivity.
In order to ensure the accuracy of measurement of the infrared thermometer, the infrared thermometer needs to be calibrated frequently, and the calibration time interval of the infrared thermometer does not exceed 1 year generally. The detection and calibration of the infrared thermometer needs professional equipment such as a black body furnace and the like. Expensive infrared thermometer standard calibrating devices such as black body furnaces and the like are not equipped in domestic provincial and urban metering stations, the infrared thermometers are high in utilization rate and high in precision requirement, so that the cost is high, and the infrared thermometers need to be detached to influence production and the like.
To overcome the above deficiencies, the above difficulties are overcome by a combination of mechanical and electronic means.
Disclosure of Invention
Aiming at the defects of the existing temperature measurement checking method and device, the invention provides an industrial infrared temperature measurement on-line calibration device and method.
The technical purpose of the invention is realized by the following technical scheme:
an industrial infrared temperature measurement online calibration device and method comprises a metal thermocouple head, a lead, a heat insulation cylinder, a control panel, a battery, a shell, an indicator light and a switch, wherein the metal thermocouple head is connected to the control panel through the lead, and the switch, the indicator light and the battery are electrically connected to the control panel; the heat insulation cylinder is fixed outside the shell, and the battery, the control panel, the switch and the indicator light are fixed in the shell; when the switch is pressed down, the control panel starts to collect the temperature of the metal thermocouple head, the indicator light indicates sampling and communication, data are sent to the verified instrument in real time, and the instrument is calibrated according to a key temperature process point verification method;
the key temperature process point inspection method determines one or more key temperature points according to a field process, verifies each key temperature point to obtain a corrected value, and finally obtains a verified temperature value according to a calculation formula through data of the instrument temperature, the key temperature points and the corrected value.
Further preferably, the key temperature process point inspection method is specifically realized by the following steps:
step 1, cleaning a lens and a dustproof filter disc of a thermodetector, gently brushing dust by using a soft brush, and then wetting a cotton ball by using distilled water to scrub the cotton ball cleanly, wherein the surface is not scratched;
step 2, determining key temperature points according to the field process
Step 3, checking all key temperature points to obtain the corrected values of all key temperature points
And 4, the calculation formula after temperature calibration is as follows:
in the formula, TsIs a measured value, and
and T is the temperature value after verification.
Further preferably, in the step 3, all the critical temperature points are verified, and a certain critical temperature point T is verifiedkThe verification steps are as follows:
step 3.1, when the temperature T of the instrument is measuredsIs shown in (T)k-3dt，Tk+3dt), inserting an online checking device in the temperature measuring furnace body, and dt is the measurement precision of the instrument;
step 3.2, the calibration device collects the temperature value T collected by the metal thermocouplerAnd sending the value to a temperature measuring instrument;
step 3.3, calculate Dt＝Ts-Tr，DtIs a correction value of the key temperature point.
In summary, compared with the prior art, the beneficial effects of the invention are as follows: the method comprises the steps of determining a plurality of key temperature points according to a field process, matching a calibration device for measurement according to designed calibration steps and calibration methods, calibrating each key temperature point to obtain a corrected value, and finally obtaining the calibrated temperature value according to a calculation formula through data of the instrument temperature, the key temperature points and the corrected value.
Drawings
FIG. 1 is a schematic structural diagram of an on-line calibration apparatus according to an embodiment;
FIG. 2 is a schematic diagram of on-line verification of an infrared instrument of a high-temperature furnace body in the embodiment.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
An industrial infrared temperature measurement online calibration device and method are disclosed, referring to fig. 1, and composed of a metal thermocouple head, a lead, a heat insulation cylinder, a control panel, a battery, a shell, an indicator light and a switch, wherein the metal thermocouple head is connected to the control panel through the lead, and the switch, the indicator light and the battery are electrically connected to the control panel; the heat insulation cylinder is fixed outside the shell, and the battery, the control panel, the switch and the indicator light are fixed in the shell; when the switch is pressed down, the control panel starts to collect the temperature of the metal thermocouple head, the indicating lamp indicates sampling and communication, data are sent to the checked instrument in real time, and the instrument is calibrated according to a key temperature process point checking method.
The key temperature process point checking method comprises the following steps:
step 1, cleaning a lens and a dustproof filter disc of a thermodetector, gently brushing dust by using a soft brush, and then wetting a cotton ball by using distilled water to scrub the cotton ball cleanly, wherein the surface is not scratched;
step 2, determining key temperature points according to the field process
Step 3, aiming at a certain key temperature point TkThe verification steps are as follows:
step 3.1, when the temperature T of the instrument is measuredsIs shown in (T)k-3dt，Tk+3dt), inserting an online checking device in the temperature measuring furnace body, and dt is the measurement precision of the instrument;
step 3.2, the calibration device collects the temperature value T collected by the metal thermocouplerAnd sending the value to a temperature measuring instrument;
step 3.3, calculate Dt＝Ts-Tr，DtIs a corrected value of the key temperature point;
step 4, repeating the step 3 to obtain the corrected values of all the key temperature points
And 5, a calculation formula after temperature calibration is as follows:
in the formula, TsIs a measured value, and
and T is the temperature value after verification.
The embodiments are explained by combining the specific cases as follows:
as shown in fig. 2, a certain high-temperature furnace body is a molten iron refining furnace, and the temperature of molten iron is measured in real time by using infrared temperature measuring equipment. During verification, determining key process points to be 1620 ℃ and 1580 ℃; the measurement accuracy is 1% of the range, i.e. 15 ℃.
When the measured temperature is 1585, the verification of the first temperature point is performed. And inserting a calibration device into the furnace body, pressing down a switch simultaneously, wherein the temperature of the molten iron measured by the metal probe is 1582 ℃, and sending the temperature of 1582 ℃ to an infrared instrument through wireless communication, and the instrument records a first calibration point. When the measured temperature is 1610 ℃, the 2 nd key point is checked, the checking device is inserted once, the switch is pressed, the temperature of the molten iron measured by the metal probe is 1615 ℃, 1615 ℃ is sent to the infrared instrument through wireless communication, and the instrument records the 2 nd check point.
Therefore, the online calibration work is completed, and the instrument calculates a new temperature value according to a calculation formula, namely the calibrated temperature value. The accuracy of the instrument is more accurate through online verification.
The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.
Claims (3)
1. An industrial infrared temperature measurement online calibration device and method are characterized by comprising a metal thermocouple head, a lead, a heat insulation cylinder, a control panel, a battery, a shell, an indicator light and a switch, wherein the metal thermocouple head is connected to the control panel through the lead, and the switch, the indicator light and the battery are electrically connected to the control panel; the heat insulation cylinder is fixed outside the shell, and the battery, the control panel, the switch and the indicator light are fixed in the shell; when the switch is pressed down, the control panel starts to collect the temperature of the metal thermocouple head, the indicator light indicates sampling and communication, data are sent to the verified instrument in real time, and the instrument is calibrated according to a key temperature process point verification method;
the key temperature process point inspection method determines one or more key temperature points according to a field process, verifies each key temperature point to obtain a corrected value, and finally obtains a verified temperature value according to a calculation formula through data of the instrument temperature, the key temperature points and the corrected value.
2. The industrial infrared temperature measurement online calibration device and method as claimed in claim 1, wherein the key temperature process point inspection method is specifically realized by the following steps:
step 1, cleaning a lens and a dustproof filter disc of a thermodetector, gently brushing dust by using a soft brush, and then wetting a cotton ball by using distilled water to scrub the cotton ball cleanly, wherein the surface is not scratched;
step 2, determining key temperature points according to the field process
Step 3, checking all key temperature points to obtain the corrected values of all key temperature points
And 4, the calculation formula after temperature calibration is as follows:
in the formula, TsIs a measured value, and
and T is the temperature value after verification.
3. The industrial infrared temperature measurement online calibration device and method as claimed in claim 2, wherein step 3 checks all key temperature points, and a certain key temperature point TkThe verification steps are as follows:
step 3.1, when the temperature T of the instrument is measuredsIs shown in (T)k-3dt，Tk+3dt), inserting an online checking device in the temperature measuring furnace body, and dt is the measurement precision of the instrument;
step 3.2, the calibration device collects the temperature value T collected by the metal thermocouplerAnd sending the value to a temperature measuring instrument;
step 3.3, calculate Dt＝Ts-Tr，DtIs a correction value of the key temperature point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238636.5A CN111272292A (en) | 2020-03-30 | 2020-03-30 | Industrial infrared temperature measurement online calibration device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238636.5A CN111272292A (en) | 2020-03-30 | 2020-03-30 | Industrial infrared temperature measurement online calibration device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111272292A true CN111272292A (en) | 2020-06-12 |
Family
ID=70998090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010238636.5A Pending CN111272292A (en) | 2020-03-30 | 2020-03-30 | Industrial infrared temperature measurement online calibration device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111272292A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683837A (en) * | 2021-01-26 | 2021-04-20 | 杭州麦乐克科技股份有限公司 | Carbon dioxide concentration detection method based on infrared technology |
-
2020
- 2020-03-30 CN CN202010238636.5A patent/CN111272292A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683837A (en) * | 2021-01-26 | 2021-04-20 | 杭州麦乐克科技股份有限公司 | Carbon dioxide concentration detection method based on infrared technology |
| CN112683837B (en) * | 2021-01-26 | 2023-07-21 | 杭州麦乐克科技股份有限公司 | Carbon dioxide concentration detection method based on infrared technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102661799B (en) | Fault positioning method and system | |
| CN104330170A (en) | Optical fiber radiation thermometer based on colorimetric method | |
| CN202522326U (en) | Contact-noncontact type sapphire infrared temperature measurement system | |
| CN103278311B (en) | A kind of infrared radiation surface uniformity measurement mechanism and method | |
| CN111272292A (en) | Industrial infrared temperature measurement online calibration device and method | |
| CN111649823A (en) | Long-distance infrared temperature measurement batch calibration method and device | |
| CN112504463A (en) | Temperature measurement system and temperature measurement method thereof | |
| CN104793072A (en) | Electrical equipment fault diagnosis system based on thermal pattern analysis method | |
| CN111595457A (en) | Method for improving temperature measurement precision of robot by adopting double-blackbody correction | |
| CN111289120A (en) | Low-cost fixed-distance infrared temperature measuring device and method | |
| CN111412994A (en) | Enhancement system for improving temperature measurement precision of thermal imager | |
| CN111272289A (en) | Real-time calibration device for thermal infrared imager | |
| CN211527623U (en) | Industrial infrared temperature measurement online calibration device | |
| CN210625855U (en) | Handheld terminal with infrared remote temperature measurement function | |
| CN105403815A (en) | Insulator live detection system and method based on wireless ad hoc network communication | |
| CN108981923B (en) | Device and method for measuring surface temperature rise of optical element under continuous laser action on line | |
| CN116878669A (en) | Temperature compensation method based on short wave infrared temperature measurement, fire monitoring method and system | |
| CN201892573U (en) | Near-infrared radiation thermometer | |
| CN106679818B (en) | Device and method for measuring temperature distribution of smooth surface | |
| CN114235157A (en) | Thermal infrared imager with TOF sensor | |
| CN211527622U (en) | Low-cost fixed-distance infrared temperature measuring device | |
| CN202770408U (en) | Image type detection device | |
| CN109141669B (en) | Wireless temperature measurement method and device based on spectrum technology | |
| CN213021954U (en) | Device for improving temperature measurement precision of thermal imager | |
| CN201258340Y (en) | Blast furnace hot blast stove crown hot blast temperature measurement apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |