CN209689767U - Temperature meter - Google Patents
Temperature meter Download PDFInfo
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- CN209689767U CN209689767U CN201920666496.4U CN201920666496U CN209689767U CN 209689767 U CN209689767 U CN 209689767U CN 201920666496 U CN201920666496 U CN 201920666496U CN 209689767 U CN209689767 U CN 209689767U
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- cold
- photodetector
- reflecting plate
- laser beam
- heat
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Abstract
The utility model relates to a kind of temperature meters, 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 utility model 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 utility model relates to thermometry field, in particular to a kind of temperature meter.
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.
Utility model content
The purpose of this utility model is that improving the deficiency in the presence of the prior art, a kind of temperature meter is provided.
In order to realize that above-mentioned purpose of utility model, the utility model embodiment provide following technical scheme: a kind of temperature
Measuring appliance, 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, the utility model has the beneficial effects that by after temperature change, expand with heat and contract with cold material and/or heat
The miniature deformation that contracting cold expanding material generates is converted into the biggish angle value formed before and after reflecting plate change in location, then by being formed
Angle value obtains the variable quantity of temperature indirectly, has higher measurement accuracy.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural representation of the angular measurement sensor in a kind of temperature meter provided in the utility model embodiment
Figure.
Fig. 2 is a kind of structural schematic diagram of the temperature meter provided in the utility model embodiment.
Fig. 3 is a kind of structural schematic diagram of the temperature meter provided in the utility model embodiment after temperature change.
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 utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings, which a variety of different can configure, carrys out cloth
It sets and designs.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the utility model of protection is sought, but is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all belongs to
In the utility model protecting field range.
Referring to Fig. 2, the present embodiment schematically discloses a kind of temperature meter, including reflecting plate 101, expand with heat and contract with cold
Material 102, pyrocondensation cold expanding material 103 and angular measurement sensor, the structure of angular measurement sensor 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, when the ambient temperature locating for the embodiment increases (or reduction), 102 meeting of material of expanding with heat and contract with cold
Elongation (or shortening) certain distance, opposite, pyrocondensation cold expanding material 103 can shorten (or elongation) certain distance, and expand with heat and contract with cold material
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 and after variation
Reflecting plate formed certain angle.After temperature change, the position that laser beam 1 is reflected into photodetector 1 can occur
Corresponding variation, likewise, the position that laser beam 2 106 is transmitted to photodetector 2 109 can also occur to change accordingly.Place
The variable quantity and photodetector 2 109 for one 105 incoming position of laser beam that reason system is detected according to photodetector 1
The variable quantity of 2 106 incoming position of laser beam detected can handle to obtain 101 change in location of reflecting plate front and back formation
Angle value.
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 utility model preferentially selects the precision angle sensor of Patent No. CN201821012924.3, unlike,
With reflecting plate instead of the reflecting part in the precision angle sensor of Patent No. CN201821012924.3 in the utility model
Part, but angle-measuring 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.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.
Claims (7)
1. a kind of temperature meter, which is characterized in that further include expand with heat and contract with cold material, heat including reflecting plate and angular measurement sensor
Any one of contracting cold expanding material or two kinds, and expand with heat and contract with cold material and/or pyrocondensation cold expanding material is generated because of temperature change
After deformation, so that the reflection Board position changes, the angular measurement sensor is for before measuring the reflecting plate change in location
The angle value formed afterwards.
2. temperature meter according to claim 1, which is characterized in that including 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 is connected to described
The ipsilateral other end of reflecting plate.
3. temperature meter according to claim 1, which is characterized in that make the material of the reflecting plate as invar conjunction
Gold, and mirror surface is smooth.
4. temperature meter according to claim 1, which is characterized in that the material that expands with heat and contract with cold is using aluminium alloy.
5. temperature meter according to claim 1, which is characterized in that the pyrocondensation cold expanding material uses bismuth alloy.
6. temperature meter according to claim 1, which is characterized in that the angular measurement sensor includes laser, light splitting
Mirror, photodetector one, photodetector two and processing system, for emitting laser beams, the laser beam passes through the laser
The baffle reflection is divided into laser beam one and laser beam two to the spectroscope and by the laser beam, and photodetector one is used
Show that incoming position, photodetector two are transmitted for receiving through spectroscope together in receiving the laser beam reflected through spectroscope
Laser beam two and show incoming position, the processing system is used for the laser beam incoming position that detects according to photodetector
Variable quantity handle to obtain the angle value formed before and after the reflecting plate change in location.
7. temperature meter according to claim 6, which is characterized in that the photodetector one and photodetector two
Spectroscopical two sides are located at, and photodetector one, photodetector two and spectroscope are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666496.4U CN209689767U (en) | 2019-05-10 | 2019-05-10 | Temperature meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666496.4U CN209689767U (en) | 2019-05-10 | 2019-05-10 | Temperature meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209689767U true CN209689767U (en) | 2019-11-26 |
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ID=68608671
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920666496.4U Expired - Fee Related CN209689767U (en) | 2019-05-10 | 2019-05-10 | Temperature meter |
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| Country | Link |
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| CN (1) | CN209689767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974876A (en) * | 2019-05-10 | 2019-07-05 | 北方民族大学 | Measure the device of temperature change |
-
2019
- 2019-05-10 CN CN201920666496.4U patent/CN209689767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974876A (en) * | 2019-05-10 | 2019-07-05 | 北方民族大学 | Measure the device of temperature change |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 Termination date: 20210510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |