CN109974876A - Measure the device of temperature change - Google Patents
Measure the device of temperature change Download PDFInfo
- Publication number
- CN109974876A CN109974876A CN201910388941.XA CN201910388941A CN109974876A CN 109974876 A CN109974876 A CN 109974876A CN 201910388941 A CN201910388941 A CN 201910388941A CN 109974876 A CN109974876 A CN 109974876A
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- CN
- China
- Prior art keywords
- cold
- temperature change
- photodetector
- reflecting plate
- laser beam
- 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
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 4
- 229910001374 Invar Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910001245 Sb alloy Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 239000002140 antimony alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004861 thermometry 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
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
- G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
- G01K5/64—Details of the compounds system
- G01K5/68—Shape of the system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
- G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
- G01K5/70—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip specially adapted for indicating or recording
- G01K5/72—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip specially adapted for indicating or recording with electric transmission means for final indication
Abstract
The present invention relates to a kind of devices for measuring temperature change, including reflecting plate and angular measurement sensor, it further include expand with heat and contract with cold any one of material, pyrocondensation cold expanding material or two kinds, and material and/or pyrocondensation cold expanding material are expanded with heat and contract with cold after generating deformation because of temperature change, so that the reflection Board position changes, the angular measurement sensor is used to measure the angle value formed before and after the reflecting plate change in location.The present invention will be after temperature change, the miniature deformation that material and/or pyrocondensation cold expanding material generate that expands with heat and contract with cold is converted into the biggish angle value formed before and after reflecting plate change in location, it obtains the variable quantity of temperature indirectly by the angle value formed again, there is higher measurement accuracy.
Description
Technical field
The present invention relates to thermometry field, in particular to a kind of device for measuring temperature change.
Background technique
Industrial production be unable to do without temperature, and all there is more or less with temperature change for the physical change of substance and chemical change
Relationship, how accurately to measure temperature is just particularly important.
Platinum resistance temperature sensor PT100 is a kind of widely used temperature sensing element in the prior art, is to utilize its resistance
Value and the temperature manufactured temperature sensor at certain functional relation, it can be converted into the variation of non-electrical amount temperature the change of impedance
Change measures, and is a kind of absolute temperature measurement.Industrially it is generally used three-wire system connection.The advantages of three-wire system connection be by
The aequilateral conductor length of PT100 is added in respectively on the bridge arm of two sides, so that conductor resistance is eliminated.Although three-wire system
Field of temperature measurement is widely used PT100 in the industry, but there are still the low problem of measurement accuracy have it is to be solved.
Summary of the invention
It is an object of the invention to improve the deficiency in the presence of the prior art, a kind of dress for measuring temperature change is provided
It sets.
In order to achieve the above-mentioned object of the invention, the embodiment of the invention provides following technical schemes: a kind of measurement temperature change
Device, including reflecting plate and angular measurement sensor further include expand with heat and contract with cold any one of material, pyrocondensation cold expanding material or two
Kind, and material and/or pyrocondensation cold expanding material are expanded with heat and contract with cold after generating deformation because of temperature change, so that the reflection Board position
It changes, the angular measurement sensor is used to measure the angle value formed before and after the reflecting plate change in location.
And the material connection of expanding with heat and contract with cold preferably, including expand with heat and contract with cold material and the pyrocondensation cold expanding material,
In one end of the reflecting plate, the pyrocondensation cold expanding material is connected to the ipsilateral other end of the reflecting plate.
Preferably, the material for making the reflecting plate is invar alloy, and mirror surface is smooth.
Preferably, the material that expands with heat and contract with cold is using aluminium alloy.
Preferably, the pyrocondensation cold expanding material uses bismuth alloy.
Preferably, the angular measurement sensor includes laser, spectroscope, photodetector one, photodetector two and place
Reason system, for emitting laser beams, the laser beam is through the baffle reflection to the spectroscope and by institute for the laser
It states laser beam and is divided into laser beam one and laser beam two, photodetector one is used to receive the laser beam through spectroscope reflection and shows together
Show incoming position, photodetector two is for receiving the laser beam two transmitted through spectroscope and showing incoming position, the place
The variable quantity for the laser beam incoming position that reason system is used to be detected according to photodetector handles to obtain the reflection Board position
The angle value that variation front and back is formed.The photodetector one is located at spectroscopical two sides, and light with photodetector two
Electric explorer one, photodetector two and spectroscope are arranged in parallel.
Compared with prior art, beneficial effects of the present invention: after temperature change, expand with heat and contract with cold material and/or pyrocondensation it is cold
The miniature deformation that swollen material generates is converted into the biggish angle value formed before and after reflecting plate change in location, then the angle by being formed
Value obtains the variable quantity of temperature indirectly, has higher measurement accuracy.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is that the structure of the angular measurement sensor in a kind of device of the measurement temperature change provided in the embodiment of the present invention is shown
It is intended to.
Fig. 2 is a kind of structural schematic diagram of the device of the measurement temperature change provided in the embodiment of the present invention.
Fig. 3 is a kind of structural representation of the device of the measurement temperature change provided in the embodiment of the present invention after temperature change
Figure.
Description of symbols in figure
Reflecting plate 101, expand with heat and contract with cold material 102, pyrocondensation cold expanding material 103, laser 104, laser beam 1, laser
Beam 2 106, spectroscope 107, photodetector 1, photodetector 2 109.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing a variety of different can configure to arrange and design herein.Therefore,
The model of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
It encloses, but is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not making
Every other embodiment obtained under the premise of creative work, belongs to protecting field range of the present invention.
Referring to Fig. 2, the present embodiment schematically disclose it is a kind of measure temperature change device, including reflecting plate 101,
Material 102, pyrocondensation cold expanding material 103 and angular measurement sensor, the structure of angular measurement sensor of expanding with heat and contract with cold please refer to Fig. 1.
The structure that expand with heat and contract with cold material and pyrocondensation cold expanding combination of materials have been used in the present embodiment, when temperature changes
When, the deformation of opposite nature can occur for reflection board ends change material of different nature, and reflecting plate front-rear position can be made to become
Change more obvious, it is also just bigger that front-rear position is formed by angle value.Of course, expand with heat and contract with cold material or heat can also be selected only
Contracting cold expanding material is connected to one end of reflecting plate, other end connection thermal expansion coefficient it is relatively small or will not vary with temperature and
Generate the material of deformation, but such combination, so that reflecting plate front-rear position variation effect just seems slightly inferior one
A bit, thus reflecting plate front-rear position to be formed by angle value also more relatively small.
The material 102 that expands with heat and contract with cold is connected to one end of reflecting plate 101, and the material 102 that expands with heat and contract with cold preferentially selects heat expansion
The relatively large metal material of contraction coefficients, such as manganese alloy, aluminium alloy, selected material is aluminium alloy in the present embodiment.
Pyrocondensation cold expanding material 103 is connected to and expands with heat and contract with cold the other end of the ipsilateral reflecting plate 101 of material 102, the heat
Contracting cold expanding material 103 preferentially selects pyrocondensation cold expanding coefficient metal material relatively large greatly, such as antimony alloy, bismuth alloy, this reality
Applying material selected in example is bismuth alloy.
101 frame of reflecting plate emits on expand with heat and contract with cold material 102 and pyrocondensation cold expanding material 103 for reflection laser
Laser beam.The reflecting plate 101 preferentially selects the relatively small metal material of coefficient of thermal expansion and contraction, as zircaloy, invar close
Gold etc., selected materials are invar alloy in the present embodiment.Further, the reflecting surface of reflecting plate is smooth surface, can also be anti-
One layer of Anti-reflective coating of plating on face is penetrated, the reflectivity of reflecting surface is effectively improved.Further, the length of reflecting plate 101 can also be appropriate
It lengthens, keeps 101 change in location of reflecting plate front and back more obvious.
Referring to Fig. 1, angular measurement sensor includes laser 104, and laser beam 1, laser beam 2 106, spectroscope 107,
Photodetector 1, photodetector 2 109 and processing system, laser 101 launch laser beam, and laser beam is incident to
The reflecting surface of reflecting plate 101 is incident to the spectroscope 107 after reflective surface；Laser beam is divided into laser by spectroscope 107
Beam 1 and laser beam 2 106, photodetector 1 receives the laser beam 1 reflected through spectroscope 107, and measures it
Incoming position, photodetector 2 109 receives the laser beam 2 106 transmitted through spectroscope 107, and measures its incoming position.
Referring to Fig. 3, expand with heat and contract with cold material 102 when the ambient temperature locating for the present embodiment increases (or reduction)
(or shortening) certain distance can be extended, on the contrary, pyrocondensation cold expanding material 103 can shorten (or elongation) certain distance, expand with heat and contract with cold
The deformation meeting of the opposite nature of material 102 and pyrocondensation cold expanding material 103 is so that the position of reflecting plate 101 changes, before variation
Reflecting plate afterwards forms certain angle.After temperature change, the position that laser beam 1 is reflected into photodetector 1 can be sent out
Raw corresponding variation, likewise, the position that laser beam 2 106 is transmitted to photodetector 2 109 can also occur to change accordingly.
The variable quantity and photodetector two for one 105 incoming position of laser beam that processing system is detected according to photodetector 1
The variable quantity of 109 2 106 incoming positions of laser beam detected can handle to obtain 101 change in location of the reflecting plate front and back
The angle value of formation.
In the specific implementation, it is preferable that it can be demarcated in advance by lot of experimental data, when temperature change is a certain amount of,
It will form great angle value before and after reflecting plate change in location, find existing function between temperature change and the angle value of formation
Relationship.For example, the angle change formed before and after reflecting plate change in location can be caused certain when 1.00 degrees Celsius of the every variation of temperature
Value carrys out existing letter between temperature variation and angle change then using the method for linear fit or nonlinear fitting
Number relationship, finally improves existing functional relation between temperature change and the angle value of formation using interpolation method.Of course, this
Every 1.00 degrees Celsius of the variation of temperature is only assumed that in embodiment, according to different occasions to the requirements at the higher level of precision, in calibration,
Smaller range of temperature can be demarcated, for example, every 0.50 degree Celsius of the variation of temperature, every 0.20 degree Celsius of the variation of temperature etc.
Deng.
In the present embodiment, the material that expands with heat and contract with cold is connected to the left end of reflecting plate, and pyrocondensation cold expanding material is connected to reflecting plate
Right end.When the temperature increases, expand with heat and contract with cold material elongation, and pyrocondensation cold expanding material shortens, and the position of reflecting plate can occur accordingly
Variation, at this point, laser beam is after baffle reflection, before temperature change, the position of laser beam incidence point on spectroscope
Setting can increase, and forward direction can occur for the incidence point that laser beam one and laser beam two are penetrated on photodetector one and photodetector two
Displacement.When the temperature decreases, laser beam one and laser beam two penetrate the incidence on photodetector one and photodetector two
The displacement of negative sense can occur for point.That is, according to laser beam one and/or laser beam two respectively in photodetector one and photoelectricity
On detector two inject point change in displacement it is positive and negative come judge temperature be increase or reduce.Of course, expand with heat and contract with cold material and/
Or the position of pyrocondensation cold expanding material connection reflecting plate is different, the laser beam one due to caused by temperature change and/or laser beam two divide
The positive and negative of point change in displacement is injected not on photodetector one and photodetector two, also will appear different as a result, wanting
According to circumstances concrete analysis temperature is to increase or reduce.
When actual measurement, after temperature change, the angle value formed before and after reflecting plate change in location is directly measured, in conjunction with
Laser beam one and/or laser beam two are injecting the variation of point position displacement just on photodetector one and photodetector two respectively
It is negative, so that it may the case where temperature change is obtained according to the functional relation of above-mentioned calibration indirectly.
The present invention preferentially selects the precision angle sensor of Patent No. CN201821012924.3, unlike, this hair
It is bright it is middle with reflecting plate instead of the reflection component in the precision angle sensor of Patent No. CN201821012924.3, but survey
Angle method is identical with the angle-measuring method of the precision angle sensor of Patent No. CN201821012924.3.
Preferentially select coefficient of thermal expansion and contraction relatively large in the present embodiment and the relatively large material of pyrocondensation cold expanding coefficient, phase
There is the deformation of opposite nature in two groups of materials under same temperature change, and miniature deformation caused under small temperature variations is turned
Big angle value is turned to, to obtain the variable quantity of temperature indirectly, higher measurement accuracy may be implemented.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (7)
1. a kind of device for measuring temperature change, which is characterized in that further include expanding with heat and contract with cold including reflecting plate and angular measurement sensor
Any one of material, pyrocondensation cold expanding material or two kinds, and expand with heat and contract with cold material and/or pyrocondensation cold expanding material are because of temperature change
And after generating deformation, so that the reflection Board position changes, the angular measurement sensor is for measuring the reflection Board position
The angle value that variation front and back is formed.
2. it is according to claim 1 measurement temperature change device, which is characterized in that including it is described expand with heat and contract with cold material and
The pyrocondensation cold expanding material, and the material that expands with heat and contract with cold is connected to one end of the reflecting plate, the pyrocondensation cold expanding material connects
Connect the other end ipsilateral in the reflecting plate.
3. the device of measurement temperature change according to claim 1, which is characterized in that the material for making the reflecting plate is
Invar alloy, and mirror surface is smooth.
4. the device of measurement temperature change according to claim 1, which is characterized in that the material that expands with heat and contract with cold is using aluminium
Alloy.
5. the device of measurement temperature change according to claim 1, which is characterized in that the pyrocondensation cold expanding material uses bismuth
Alloy.
6. the device of measurement temperature change according to claim 1, which is characterized in that the angular measurement sensor includes laser
Device, spectroscope, photodetector one, photodetector two and processing system, the laser are for emitting laser beams, described to swash
Light beam is divided into laser beam one and laser beam two, photodetection through the baffle reflection to the spectroscope and by the laser beam
Device one is used to receive the laser beam through spectroscope reflection and shows incoming position together, and photodetector two is for receiving through spectroscope
The laser beam two that transmits simultaneously shows incoming position, and the processing system according to the laser beam that photodetector detects for entering
The variable quantity for penetrating position handles to obtain the angle value formed before and after the reflecting plate change in location.
7. the device of measurement temperature change according to claim 6, which is characterized in that the photodetector one and photoelectricity
Detector two is located at spectroscopical two sides, and photodetector one, photodetector two and spectroscope are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388941.XA CN109974876A (en) | 2019-05-10 | 2019-05-10 | Measure the device of temperature change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388941.XA CN109974876A (en) | 2019-05-10 | 2019-05-10 | Measure the device of temperature change |
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| Publication Number | Publication Date |
|---|---|
| CN109974876A true CN109974876A (en) | 2019-07-05 |
Family
ID=67073394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910388941.XA Pending CN109974876A (en) | 2019-05-10 | 2019-05-10 | Measure the device of temperature change |
Country Status (1)
| Country | Link |
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| CN (1) | CN109974876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433653A (en) * | 2023-10-27 | 2024-01-23 | 湖北中宸建筑安装有限公司 | Track slab measurement system and measurement method thereof |
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|---|---|---|---|---|
| US5645351A (en) * | 1992-05-20 | 1997-07-08 | Hitachi, Ltd. | Temperature measuring method using thermal expansion and an apparatus for carrying out the same |
| CN1384343A (en) * | 2002-06-12 | 2002-12-11 | 符建 | Light-sensing temperature monitor |
| CN102735357A (en) * | 2012-06-25 | 2012-10-17 | 中北大学 | Temperature measuring device based on speckle interference and temperature measuring method adopting temperature measuring device |
| KR20120127156A (en) * | 2011-05-12 | 2012-11-21 | 한국과학기술원 | A fiber optic sensor using transmissive grating panel and mirror |
| CN103234648A (en) * | 2013-03-29 | 2013-08-07 | 清华大学 | Polymer bi-material micro-beam and temperature sensitive structure |
| US20170370783A1 (en) * | 2016-06-24 | 2017-12-28 | The Regents Of The University Of Michigan | Nanoscale Temperature Sensor |
| CN108775968A (en) * | 2018-07-05 | 2018-11-09 | 平高集团威海高压电器有限公司 | A kind of non-contact temperature sensor |
| CN209689767U (en) * | 2019-05-10 | 2019-11-26 | 北方民族大学 | Temperature meter |
-
2019
- 2019-05-10 CN CN201910388941.XA patent/CN109974876A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5645351A (en) * | 1992-05-20 | 1997-07-08 | Hitachi, Ltd. | Temperature measuring method using thermal expansion and an apparatus for carrying out the same |
| CN1384343A (en) * | 2002-06-12 | 2002-12-11 | 符建 | Light-sensing temperature monitor |
| KR20120127156A (en) * | 2011-05-12 | 2012-11-21 | 한국과학기술원 | A fiber optic sensor using transmissive grating panel and mirror |
| CN102735357A (en) * | 2012-06-25 | 2012-10-17 | 中北大学 | Temperature measuring device based on speckle interference and temperature measuring method adopting temperature measuring device |
| CN103234648A (en) * | 2013-03-29 | 2013-08-07 | 清华大学 | Polymer bi-material micro-beam and temperature sensitive structure |
| US20170370783A1 (en) * | 2016-06-24 | 2017-12-28 | The Regents Of The University Of Michigan | Nanoscale Temperature Sensor |
| CN108775968A (en) * | 2018-07-05 | 2018-11-09 | 平高集团威海高压电器有限公司 | A kind of non-contact temperature sensor |
| CN209689767U (en) * | 2019-05-10 | 2019-11-26 | 北方民族大学 | Temperature meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117433653A (en) * | 2023-10-27 | 2024-01-23 | 湖北中宸建筑安装有限公司 | Track slab measurement system and measurement method thereof |
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