CN111060224B - Integrated soldering iron thermometer calibrating device - Google Patents
Integrated soldering iron thermometer calibrating device Download PDFInfo
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- CN111060224B CN111060224B CN202010066399.9A CN202010066399A CN111060224B CN 111060224 B CN111060224 B CN 111060224B CN 202010066399 A CN202010066399 A CN 202010066399A CN 111060224 B CN111060224 B CN 111060224B
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- temperature
- soldering iron
- measuring head
- temperature control
- cavity
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000005476 soldering Methods 0.000 title claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 45
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 7
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a calibrating device of an integrated soldering iron thermometer. The device comprises a lifting table, a soldering iron thermometer, a fixed support, a constant temperature cavity and a temperature control and display system. The temperature control and display system is used for controlling the heating body to generate a heat source with stable and controllable temperature, and the temperature of each calibration point is realized after the temperature is fed back and regulated by the precise film platinum resistance sensor; the precise film platinum resistance sensor is respectively arranged in the constant temperature cavity and the measuring head, and can sense temperature change in real time so as to control the system to quickly adjust; when in calibration, the measuring head of the device simulates the welding tip of the soldering iron, and the temperature value measured by the platinum resistance sensor of the measuring head is used as a standard to calibrate different temperature points of the soldering iron thermometer. The device rapidly adjusts the temperature of the heat source through the PID, overcomes the temperature transient generated by the soldering iron thermometer with low contact temperature of the measuring head during calibration, and realizes the integral performance calibration of the temperature sensing part and the result display part of the soldering iron thermometer.
Description
Technical Field
The invention relates to a thermometer calibrating device, in particular to a soldering iron thermometer calibrating device.
Background
The soldering iron thermometer is widely applied to the manual welding process of high-precision electronic components or integrated circuits, and is mainly used for rapidly and accurately measuring the instant temperature of the soldering tip of the electric soldering iron, judging whether the temperature of the soldering tip of the electric soldering iron meets the process requirements according to the measured temperature, and taking corresponding measures. For the high-requirement welding process, besides the electric soldering iron, the solder and the correct welding method, the electric soldering iron needs enough heat to ensure the stable welding temperature reaching the melting point of the solder during welding, so that the welding quality of electronic products can be ensured and the cold joint and the long-term off-welding can be prevented. The welding temperature is too low to reach the melting point of the solder, and the too high temperature can cause thermal shock to components, so the temperature measurement accuracy of the soldering iron thermometer is particularly important.
Currently, soldering iron thermometers are used as digital temperature indicators for calibration. This method has a significant disadvantage in that it only calibrates the temperature indicating portion of the soldering iron thermometer, and does not calibrate the temperature sensor of the soldering iron thermometer, and thus cannot accurately measure the overall error of the soldering iron thermometer.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a calibrating device of an integrated soldering iron thermometer.
The technical scheme adopted for solving the technical problems is as follows:
the invention comprises a lifting table, a fixed bracket, a constant temperature cavity and a temperature control and display system.
The constant temperature cavity is arranged on the fixed support, a lifting platform for placing a calibrated soldering iron thermometer is arranged below the constant temperature cavity, and the constant temperature cavity is automatically controlled and regulated by a closed loop of a temperature control and display system to generate a stable and determined temperature standard source; the measuring head on the constant temperature cavity simulates the soldering tip of the soldering iron and calibrates the overall performance of the temperature sensing part and the result display part of the soldering iron thermometer.
Further, the constant temperature cavity comprises an anti-scalding cover, a heat preservation layer, a heating body, a measuring head and a first platinum resistor; the heating body is arranged in the center of the constant temperature cavity and is used for generating a stable and adjustable heat source; the measuring head is arranged at the lower part of the constant temperature cavity and receives heat from the heating body through the heat conductor, the first platinum resistor is arranged in the measuring head and used for feeding back the temperature control of the measuring head and also used as a reference standard of the temperature, and the first platinum resistor is in signal connection with the temperature control and display system.
Further, the temperature control and display system comprises a temperature control module, a temperature control meter, an AD conversion module and a touch screen, wherein the AD conversion module is connected with the first platinum resistor through signals, the temperature control module is connected with the heating body through signals, the temperature control meter is connected with the temperature control module through signals, and the touch screen is connected with the AD conversion module and the temperature control meter through signals. The temperature control and display system has PID parameter self-setting and platinum resistance parameter setting functions, and ensures that the verified platinum resistance temperature sensor can accurately measure the temperature level of the standard platinum resistance.
Furthermore, the measuring head is made of high-purity red copper material, and an alloy layer is plated on the outer surface of the measuring head.
Further, the heating body is a modularized electric heating body.
Further, a second platinum resistor for feeding back the temperature of the constant temperature cavity is distributed at a position, close to the outer side, of the constant temperature cavity, the second platinum resistor is in signal connection with the temperature control meter, a heat insulation layer is circumferentially arranged on the heat conductor, and an anti-scalding cover is arranged on the periphery of the heat insulation layer.
Further, the second platinum resistor in the constant temperature cavity is compared with the standard temperature of the measuring head in real time to form temperature feedback, so that the synchronism and instantaneity of temperature measurement and control are achieved.
The invention has the beneficial effects that:
1. The structural design of the device accurately calculates the heat capacity of the constant temperature cavity and the influence of environmental heat radiation, convection and conduction, and ensures the real-time accuracy of the temperature of the measuring head through numerical simulation.
2. The second platinum resistor in the constant temperature cavity and the first platinum resistor of the measuring head of the device can quickly sense the temperature change and quickly recover to the set temperature through PID adjustment, so that the stability of a heat source is ensured, and the temperature transient generated by soldering iron temperature timing with low contact temperature of the measuring head during calibration is overcome.
3. The invention can be used for calibrating the performance of the temperature sensing part and the result display part of the soldering iron thermometer to obtain the integral error of the soldering iron thermometer.
4. The invention has the characteristics of convenient operation, high accuracy, easy carrying and the like.
Drawings
FIG. 1 is a schematic view of the apparatus composition of the present invention;
fig. 2 is a schematic structural view of a thermostatic chamber portion of the device of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The constant temperature cavity is arranged on the fixed support, the detected soldering iron thermometer is placed on the lifting platform during operation, a determined temperature standard source is generated after the constant temperature cavity is controlled and regulated by the temperature control and display device, and the measuring head on the constant temperature cavity simulates the soldering nozzle of the soldering iron to calibrate the overall performance of the soldering iron thermometer. The constant temperature cavity comprises an anti-scalding cover, a heating body, a measuring head and a first platinum resistor. The heating body is uniformly arranged in the constant temperature cavity, the second platinum resistor is distributed, a stable and adjustable heat source can be generated, the measuring head is arranged at the lower position of the anti-scalding cover, and the first platinum resistor arranged in the measuring head is used as a reference standard of temperature. And the second platinum resistor in the constant temperature cavity is compared with the standard temperature of the measuring head in real time to form temperature feedback, so that the synchronism and the instantaneity of temperature measurement and control are achieved.
Examples:
As shown in fig. 1, a lifting table 1 is arranged on the bottom surface of a fixed bracket 3, the table surface of the lifting table 1 is used for placing a soldering iron thermometer 2 to be detected, and the temperature sensing area of the soldering iron thermometer 2 can be well contacted with a measuring head 8 of a constant temperature cavity 4 through the adjustment of the lifting height; the constant temperature cavity 4 is arranged on the fixed support, a stable and controllable heat source is generated through the control of the temperature control and display system 5, and the measuring head 8 below the constant temperature cavity 4 simulates the welding nozzle of the soldering iron and calibrates the soldering iron thermometer 2.
As shown in FIG. 2, the constant temperature cavity 4 is composed of a measuring head 4-1, a heating body 4-2, a heat conductor 4-3, a heat insulation layer 4-4, an anti-scalding cover 4-5, a second platinum resistor 4-6 and a first platinum resistor 4-7. The heating body 4-2 is uniformly arranged in the anti-scalding cover 4-5, and a stable and adjustable heat source can be generated by supplying quantitative current; the measuring head 4-1 is arranged below the cavity shell 6, and is made of high-purity red copper material and plated with alloy on the outer surface for preventing oxidization. The measuring head 8 is internally provided with a first platinum resistor 4-7, the first platinum resistor 4-7 is used for feedback of temperature control of the heating body 4-2 and is used as a reference standard of temperature, heat of the heating body 4-2 is transferred to the measuring head 4-1 through a surrounding heat conductor 4-3, the heat conductor 4-3 is circumferentially coated with an insulating layer 4-4, and the periphery of the insulating layer 4-4 is the anti-scalding cover 4-5.
The temperature control and display system 5 comprises a temperature control module 5-1, a temperature control table 5-3, an AD conversion module 5-2 and a touch screen 5-4, wherein the AD conversion module 5-2 is in signal connection with the first platinum resistor 4-7, receives temperature data (representing the temperature of the measuring head 4-1) from the first platinum resistor 4-7, the temperature control module (5-1) is in signal connection with the heating body 4-2 and is used for controlling the temperature of the heating body 4-2, the temperature control table 5-3 is in signal connection with the temperature control module 5-1, meanwhile, the temperature control table 5-3 receives temperature data (representing the temperature of the heating body) from the second platinum resistor 4-6, and the touch screen 5-4 is in signal connection with the AD conversion module 5-2 and the temperature control table 5-3 and is used for displaying the temperature of the measuring head and the heating body and simultaneously controlling the temperature and changing the temperature of the heating body.
The working principle of the invention is as follows:
The invention uses the heat source generated by the constant temperature cavity as a standard, and uses the measuring head below the constant temperature cavity to simulate the welding nozzle of the soldering iron to calibrate the soldering iron thermometer. When the device works, a calibrated temperature point is set through the temperature control and display system, after the heating body is electrified, the temperature is quickly and stably increased according to a temperature control program, a first platinum resistor is arranged in a measuring head below the constant temperature cavity, the temperature of the measuring head can be sensed in real time, the temperature value is used as feedback, the temperature control and display system carries out PID (proportion integration differentiation) adjustment on the heating body, and finally the set calibrated temperature is realized.
The temperature sensing area of the soldering iron thermometer is tightly contacted with the measuring head by placing the soldering iron thermometer on the lifting table and adjusting the height of the lifting table; at this time, the soldering iron thermometer measures the temperature of the measuring head, and the display result is T 1; taking the temperature value T 2 measured by the first platinum resistor as a standard, the temperature measurement error E of the soldering iron thermometer is calculated according to the following formula:
E= T1- T2
The foregoing detailed description is provided to illustrate the invention only, and not to limit the invention. All modifications which may be directly derived or contemplated by those skilled in the art from the present disclosure fall within the spirit of the present invention and the scope of the appended claims.
Claims (3)
1. The utility model provides an integrated soldering iron thermometer calibrating device, includes elevating platform (1), fixed bolster (3), constant temperature cavity (4), temperature control and display system (5), its characterized in that:
The constant temperature cavity (4) is arranged on the fixed support (3), a lifting platform (1) for placing a calibrated soldering iron thermometer (2) is arranged below the constant temperature cavity (4), and the constant temperature cavity (4) is automatically controlled and regulated by a temperature control and display system (5) in a closed loop manner to generate a stable and determined temperature standard source; the measuring head (4-1) on the constant temperature cavity (4) simulates a welding nozzle of the soldering iron and calibrates the overall performances of the temperature sensing part and the result display part of the soldering iron thermometer (2);
The constant temperature cavity (4) comprises an anti-scalding cover (4-5), a heating body (4-2), a measuring head (4-1) and a first platinum resistor (4-7); the heating body (4-2) is arranged in the center of the constant temperature cavity (4) and used for generating a stable and adjustable heat source, the measuring head (4-1) is arranged at the lower position of the constant temperature cavity (4) and receives heat from the heating body through the heat conductor (4-3), the first platinum resistor (4-7) is arranged in the measuring head (4-1) and used for feeding back the temperature control of the measuring head (4-1) and also used as a reference standard of the temperature, and the first platinum resistor (4-7) is in signal connection with the temperature control and display system (5);
The temperature control and display system (5) comprises a temperature control module (5-1), a temperature control meter (5-3), an AD conversion module (5-2) and a touch screen (5-4), wherein the AD conversion module (5-2) is in signal connection with a first platinum resistor (4-7), the temperature control module (5-1) is in signal connection with a heating body (4-2), the temperature control meter (5-3) is in signal connection with the temperature control module (5-1), the touch screen (5-4) is in signal connection with the AD conversion module (5-2) and the temperature control meter (5-3), and the temperature control and display system (5) has PID parameter self-setting and platinum resistor parameter setting functions;
the measuring head (4-1) is made of high-purity red copper material, and an alloy layer is plated on the outer surface of the measuring head;
the heating body (4-2) is a modularized electric heating body.
2. The integrated soldering iron thermometer calibration device of claim 1, wherein: the temperature control device is characterized in that a second platinum resistor (4-6) for feeding back the temperature of the constant temperature cavity (4) is distributed at a position, close to the outer side, of the constant temperature cavity (4), the second platinum resistor (4-6) is in signal connection with the temperature control meter (5-3), a heat insulating layer (4-4) is circumferentially arranged on the heat conductor (4-3), and an anti-scalding cover (4-5) is arranged on the periphery of the heat insulating layer (4-4).
3. The integrated soldering iron thermometer calibration device of claim 2, wherein: the second platinum resistor (4-6) in the constant temperature cavity (4) is compared with the standard temperature of the measuring head (4-1) in real time to form temperature feedback, so that the synchronism and the instantaneity of temperature measurement and control are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066399.9A CN111060224B (en) | 2020-01-20 | 2020-01-20 | Integrated soldering iron thermometer calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066399.9A CN111060224B (en) | 2020-01-20 | 2020-01-20 | Integrated soldering iron thermometer calibrating device |
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| Publication Number | Publication Date |
|---|---|
| CN111060224A CN111060224A (en) | 2020-04-24 |
| CN111060224B true CN111060224B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010066399.9A Active CN111060224B (en) | 2020-01-20 | 2020-01-20 | Integrated soldering iron thermometer calibrating device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207412A (en) * | 2011-03-14 | 2011-10-05 | 沈阳飞机工业（集团）有限公司 | Constant temperature electric iron calibrating device and calibration method thereof |
| CN102768085A (en) * | 2012-08-07 | 2012-11-07 | 南京理工大学 | Temperature sensor high-accuracy calibration device |
| CN202539741U (en) * | 2012-05-03 | 2012-11-21 | 东莞市剑鑫电子材料有限公司 | Constant-temperature welding station |
| CN204495486U (en) * | 2015-03-12 | 2015-07-22 | 天津市计量监督检测科学研究院 | The on-the-spot self-checking device of integrative temperature transmitter |
| CN105865632A (en) * | 2016-03-28 | 2016-08-17 | 浙江省计量科学研究院 | Portable blackbody metering furnace based on semiconductor and mini-sized water cooling and heat radiation technology |
| CN106560520A (en) * | 2017-01-05 | 2017-04-12 | 中国计量大学 | Annealing furnace temperature field calibration thermometer automatic lifting apparatus |
| CN206772465U (en) * | 2017-06-14 | 2017-12-19 | 中国计量大学 | A kind of long-rod platinum resistance thermometer calibration device |
| CN209102241U (en) * | 2018-12-18 | 2019-07-12 | 福建省计量科学研究院（福建省眼镜质量检验站） | A kind of land surface pyrometer calibrating installation |
| CN211317580U (en) * | 2020-01-20 | 2020-08-21 | 浙江省计量科学研究院 | Integrated soldering iron thermometer calibrating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4714849B2 (en) * | 2006-03-02 | 2011-06-29 | 独立行政法人産業技術総合研究所 | Variable temperature low temperature calibration system |
-
2020
- 2020-01-20 CN CN202010066399.9A patent/CN111060224B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207412A (en) * | 2011-03-14 | 2011-10-05 | 沈阳飞机工业（集团）有限公司 | Constant temperature electric iron calibrating device and calibration method thereof |
| CN202539741U (en) * | 2012-05-03 | 2012-11-21 | 东莞市剑鑫电子材料有限公司 | Constant-temperature welding station |
| CN102768085A (en) * | 2012-08-07 | 2012-11-07 | 南京理工大学 | Temperature sensor high-accuracy calibration device |
| CN204495486U (en) * | 2015-03-12 | 2015-07-22 | 天津市计量监督检测科学研究院 | The on-the-spot self-checking device of integrative temperature transmitter |
| CN105865632A (en) * | 2016-03-28 | 2016-08-17 | 浙江省计量科学研究院 | Portable blackbody metering furnace based on semiconductor and mini-sized water cooling and heat radiation technology |
| CN106560520A (en) * | 2017-01-05 | 2017-04-12 | 中国计量大学 | Annealing furnace temperature field calibration thermometer automatic lifting apparatus |
| CN206772465U (en) * | 2017-06-14 | 2017-12-19 | 中国计量大学 | A kind of long-rod platinum resistance thermometer calibration device |
| CN209102241U (en) * | 2018-12-18 | 2019-07-12 | 福建省计量科学研究院（福建省眼镜质量检验站） | A kind of land surface pyrometer calibrating installation |
| CN211317580U (en) * | 2020-01-20 | 2020-08-21 | 浙江省计量科学研究院 | Integrated soldering iron thermometer calibrating device |
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