CN109855764B - Self-calibrating temperature sensor device - Google Patents
Self-calibrating temperature sensor device Download PDFInfo
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- CN109855764B CN109855764B CN201910066581.1A CN201910066581A CN109855764B CN 109855764 B CN109855764 B CN 109855764B CN 201910066581 A CN201910066581 A CN 201910066581A CN 109855764 B CN109855764 B CN 109855764B
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- 239000012782 phase change material Substances 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000011229 interlayer Substances 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 16
- 238000009529 body temperature measurement Methods 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 229910052697 platinum Inorganic materials 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002076 thermal analysis method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
本发明公开了一种自校准温度传感器装置，包括相变材料A和相变材料B，外壳、隔层、绝缘层、内核温度传感器，通过将相变材料A和相变材料B加热到满足相变点温度，从而达到温坪，根据相变材料固定的相变点温度来对温度传感器进行校准，从而实现在线标定。该装置满足了特殊环境下温度传感器的在线标定，提高了特殊环境下温度传感器的测量准确性，实现了测量校准一体化的功能。
The invention discloses a self-calibrating temperature sensor device, comprising a phase change material A and a phase change material B, a shell, an interlayer, an insulating layer, and a core temperature sensor. By heating the phase change material A and the phase change material B to satisfy the phase change The temperature of the transition point is determined to reach the temperature plateau, and the temperature sensor is calibrated according to the fixed phase transition temperature of the phase change material, so as to realize online calibration. The device satisfies the online calibration of the temperature sensor in a special environment, improves the measurement accuracy of the temperature sensor in a special environment, and realizes the integrated function of measurement and calibration.
Description
Technical Field
The invention belongs to the technical field of spacecraft temperature measurement and calibration, and particularly relates to a device capable of realizing online calibration of a temperature measurement system in a special environment.
Background
Temperature sensors such as platinum resistors can generate temperature drift and time drift in the long-term use process. Currently, the industry generally monitors the annual drift amount of a platinum resistor through regular checking of the resistance value of a key temperature point of the platinum resistor, wherein the annual drift amount of the industrial platinum resistor is large, and the annual stability is 0.1 ℃. In actual metering use, in order to ensure that data is accurate and reliable, the industrial platinum resistor is subjected to aging treatment at the upper and lower use temperature limits in each metering period. However, the platinum resistance temperature sensor used in a special environment cannot perform corresponding processing, the annual temperature drift amount is larger than that in a normal environment, and a large error is introduced into a high-precision temperature measurement system. Temperature measurement in special environments is extremely important and widely applied in the industrial fields of metallurgy manufacturing, material processing, power systems and the like in China, and more importantly, with the development of important projects such as manned spaceflight, lunar exploration projects, nuclear power projects and the like in China, an urgent need exists for an online calibration technology. Through the influence of the long-time space comprehensive environment in the rail and the influence of the temperature drift and the time drift of the temperature measuring system, the temperature measuring accuracy can be reduced to different degrees. For example, the design life of a high-orbit 20-meter SAR satellite is 8 years, and the high-precision temperature control requirements of a rubidium clock and an accelerometer of the high-orbit 20-meter SAR satellite put higher requirements on the precision of a temperature measurement system. Therefore, the requirement on online calibration is harsh, and the self-calibration function can be realized on site in special environment.
Disclosure of Invention
The invention aims to provide a temperature measuring device integrating measurement and calibration, which is used for realizing the online calibration of a temperature measuring system in a special environment.
The self-calibration temperature sensor device comprises two phase-change materials A and B, a device shell, an interlayer, an insulating layer, an inner core temperature sensor and a self-heating device, wherein the inner most layer of the device is the inner core temperature sensor, the phase-change material A surrounds the inner core temperature sensor, the phase-change material B surrounds the phase-change material A, the interlayer is arranged between the phase-change material A and the phase-change material B, the shell surrounds the phase-change material B, the interlayer is also arranged between the shell and the phase-change material B, and the inner surface and the outer surface of each interlayer are plated with the; the self-heating device is arranged around the housing.
Wherein the phase change materials a and B can be switched in position.
Further, the whole device is of a cylindrical structure.
The selection of the two phase-change materials a and B can be determined according to the specific practical application environment. The phase change material should be well packaged, and each material reserves an expansion space with the volume more than 5 percent of the material.
Wherein, the wall thickness of shell and interlayer is 1mm, and its material can be selected for stainless steel, and the material of selecting for the better heat conductivity such as copper.
Wherein, the inner and outer surfaces of the interlayer are plated with insulating layers, and the insulating layer can be made of ceramic, polyimide coating glue and other materials with good heat conduction and insulating properties.
Wherein, PT1000 can be selected as the core temperature sensor, four-wire system temperature measurement is adopted, and PT1000 measurement accuracy reaches 0.03 ℃.
The self-heating device meets the requirement of self-calibration on heat supply, the resistance value of the heating wire is not more than 60 omega, the working voltage is 24V, the heating power is controlled within 10W, and the self-heating device is realized by plating the heating wire on the surface of the shell.
The self-calibration temperature sensor device can realize the on-line calibration of the temperature measurement system in a special environment, when the temperature measurement system needs to be calibrated, the self-heating device heats two phase change materials, and when each phase change material reaches the temperature of a phase change point, the phase change materials are kept at the temperature of the phase change point for a certain time. The temperature measured by the temperature sensor is compared with the standard phase change point temperatures of the two phase change materials, so that the self measurement error of the temperature sensor is corrected, and the online calibration of the temperature measurement system is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of the self-calibrating temperature sensor device of the present invention.
FIG. 2 is a schematic longitudinal sectional view of the self-calibrating temperature sensor device according to the present invention.
In the figure, 1 is a shell and a self-heating device; 2 is an interlayer; 3 is a phase change material A; 4 is a phase-change material B; and 5, an inner core temperature sensor.
Detailed Description
The following is a description of the present invention, which is further illustrated by the following specific embodiments. The following detailed description, of course, is merely illustrative of various aspects of the invention and is not to be construed as limiting the scope of the invention.
Referring to fig. 1-2, fig. 1 is a schematic cross-sectional view of a self-calibrating temperature sensor apparatus according to the present invention; FIG. 2 is a schematic longitudinal sectional view of the self-calibrating temperature sensor device according to the present invention. The self-calibration temperature sensor device specifically comprises a phase-change material A3, a phase-change material B4, a shell, a self-heating device 1, an interlayer 2, an insulating layer and an inner core temperature sensor 5. The selection of the phase-change material is not limited to a few types, and can be selected according to the calibrated temperature measurement range. The device comprises a core temperature sensor 5, a phase-change material B4, an interlayer 2, an insulating layer, a phase-change material A3, a shell and a heating device 1 from inside to outside. The device is integrally of a cylindrical structure, and a core temperature sensor is arranged in the center of a phase-change material B4; the phase change material A3 wraps the phase change material B4, and a barrier layer is arranged between the phase change materials A3 and B; the shell structure wraps the phase-change material B4, the interlayer 2 is arranged between the shell and the phase-change material B4, the inner surface and the outer surface of the interlayer 2 are both plated with insulating layers, and the outer surface of the shell is provided with a self-heating device.
The specific working principle of the self-calibration temperature sensor device is as follows: the self-calibration temperature sensor device needs to carry out thermal analysis on the structure of the temperature sensor before use, tests are carried out in a thermal vacuum environment, the relation of a transfer function between the shell and the surface temperature of the sensor is established by combining the thermal analysis result and test data, and the temperature measurement of an object can be realized after the relation is determined. The self-calibration temperature sensor device is attached to the surface of a measured object when in use, and the temperature value measured by the self-calibration temperature sensor is the real temperature of the surface of the object under the condition of normal temperature measurement. After a period of time, when the temperature sensor needs to be calibrated, the device starts a self-heating device to heat two phase-change materials, so that the materials in the device slowly change phase respectively to obtain a constant temperature field, and a measured temperature function is continuously corrected through the standard constant temperature fields of the two phase-change materials and the temperature measured by the temperature sensor, thereby realizing the online calibration of the measuring system.
Production example 1
In a specific embodiment, the self-calibrating temperature sensor device has overall dimensions Φ 9.8mm × 15mm and a total weight of less than 300 g. The self-calibration temperature sensor has good interface tightness and is suitable for vacuum low-temperature environments and other special unmanned environments. Phase-change materials in the device can be selected according to use requirements, and the selection of the shell and the interlayer is not unique.
Assuming that the temperature range of the calibrated sensor is 10-30 ℃, the two phase-change materials A and B can be gallium (30 ℃, the purity is 99.99999%) and gallium-tin (20.5 ℃, the purity of gallium and tin is 99.99999%, and the mass percentage of tin is 12%), wherein the diameter of the phase-change material A is 7.8mm, and the diameter of the phase-change material B is 4.1 mm. The phase-change material has good encapsulation, each material reserves an expansion space with the volume of more than 5 percent of the material, and the alternative material of the phase-change material can be other eutectic point metal simple substances or alloys.
In a specific embodiment, the wall thickness of the shell and the interlayer is 1mm, the material of the shell and the interlayer can be stainless steel, and the alternative material is copper and other materials with better heat conductivity.
In a specific embodiment, the inner and outer surfaces of the interlayer are plated with insulating layers, and the insulating layer is made of a material with good heat conduction and insulation properties, such as ceramic, polyimide coating glue and the like. The core temperature sensor adopts PT1000, four-wire system temperature measurement is adopted, and the PT1000 metering accuracy reaches 0.03 ℃.
In a specific embodiment, the resistance value of the self-heating device does not exceed 60 Ω, the working voltage is 24V, and the heating power is controlled within 10W, which is realized by plating a heating wire on the outer surface. The data acquisition system realizes the acquisition of temperature data.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention, without departing from the spirit of the description and the accompanying drawings.
Claims (10)
1. The self-calibration temperature sensor device comprises two phase-change materials A and B, a device shell, an interlayer, an insulating layer, an inner core temperature sensor and a self-heating device, wherein the inner most layer of the device is the inner core temperature sensor, the phase-change material A surrounds the inner core temperature sensor, the phase-change material B surrounds the phase-change material A, the interlayer is arranged between the phase-change material A and the phase-change material B, the shell surrounds the phase-change material B, the interlayer is also arranged between the shell and the phase-change material B, and the inner surface and the outer surface of each interlayer are plated with the; the self-heating device is arranged around the housing.
2. The self-calibrating temperature sensor device of claim 1, wherein the phase change materials a and B are switchable in position.
3. The self-calibrating temperature sensor device of claim 1, wherein the device has an overall cylindrical configuration.
4. The self-calibrating temperature sensor device of claim 1, wherein the two phase change materials reserve an expansion space of more than 5% of their volume.
5. The self-calibrating temperature sensor device of claim 1, wherein the wall thickness of the housing and the spacer are both 1 mm.
6. The self-calibrating temperature sensor device of claim 1, wherein the housing material is selected from stainless steel or copper.
7. The self-calibrating temperature sensor device of claim 1, wherein the insulating layer material is a ceramic or polyimide coated glue.
8. The self-calibrating temperature sensor apparatus of claim 1, wherein the core temperature sensor is PT1000, and four-wire temperature measurement is used.
9. The self-calibrating temperature sensor device of claim 1, wherein the resistance of the heating wire of the self-heating device does not exceed 60 Ω, and the heating power is controlled within 10W, which is realized by plating the heating wire on the surface of the housing.
10. The self-calibrating temperature sensor device of claim 1, wherein phase change material a and phase change material B are gallium and gallium tin, respectively.
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| CN201910066581.1A CN109855764B (en) | 2019-01-24 | 2019-01-24 | Self-calibrating temperature sensor device |
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| CN201910066581.1A CN109855764B (en) | 2019-01-24 | 2019-01-24 | Self-calibrating temperature sensor device |
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| CN109855764B true CN109855764B (en) | 2020-05-26 |
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| CN111982330B (en) * | 2020-08-20 | 2022-05-17 | 德州尧鼎光电科技有限公司 | In-situ self-calibration type temperature sensing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011016612A1 (en) * | 2011-04-06 | 2012-10-11 | Technische Universität Ilmenau | Method for calibration of temperature of thermometer e.g. radiation thermometer at fixed points, involves displacing temperature-sensitive element comprising reference material in thermal equilibrium state |
| CN103229032A (en) * | 2010-10-04 | 2013-07-31 | 株式会社理光 | Electric element |
| EP3244194A1 (en) * | 2015-03-18 | 2017-11-15 | Mayekawa Mfg. Co., Ltd. | Device for detecting phase transition changes and method for detecting phase transition changes in moisture-containing food sample |
| CN108027286A (en) * | 2015-07-29 | 2018-05-11 | 恩德莱斯+豪瑟尔韦泽尔有限商业两合公司 | Method and apparatus for thermometer field calibration |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229032A (en) * | 2010-10-04 | 2013-07-31 | 株式会社理光 | Electric element |
| CN104316210A (en) * | 2010-10-04 | 2015-01-28 | 株式会社理光 | Electric element, integrated element and electronic circuit |
| DE102011016612A1 (en) * | 2011-04-06 | 2012-10-11 | Technische Universität Ilmenau | Method for calibration of temperature of thermometer e.g. radiation thermometer at fixed points, involves displacing temperature-sensitive element comprising reference material in thermal equilibrium state |
| EP3244194A1 (en) * | 2015-03-18 | 2017-11-15 | Mayekawa Mfg. Co., Ltd. | Device for detecting phase transition changes and method for detecting phase transition changes in moisture-containing food sample |
| CN108027286A (en) * | 2015-07-29 | 2018-05-11 | 恩德莱斯+豪瑟尔韦泽尔有限商业两合公司 | Method and apparatus for thermometer field calibration |
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