CN207622885U - A kind of temperature high resolution detection device - Google Patents
A kind of temperature high resolution detection device Download PDFInfo
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- CN207622885U CN207622885U CN201721787889.8U CN201721787889U CN207622885U CN 207622885 U CN207622885 U CN 207622885U CN 201721787889 U CN201721787889 U CN 201721787889U CN 207622885 U CN207622885 U CN 207622885U
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- temperature sensor
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Abstract
The utility model provides a kind of temperature high resolution detection device, including an insulating box, which has cavity, have the distribution of uniform thermal field and slowly temperature changing process in the cavity；One standard temperature sensor and multiple temperature sensors to be measured, it is set in the cavity of the insulating box, the standard temperature sensor is for measuring the cavity inner temperature variation tendency, wherein, the branched thermometer to be measured surrounds regular polygon, it is each positioned at the position on the vertex of the regular polygon, the standard temperature sensor is positioned over the center of multiple temperature sensor to be measured, filling water or the larger special oil of specific heat in the cavity, the water or special oil are to the degree for submerging the standard temperature sensor and temperature sensor to be measured, the external bridge for measuring temperature of the standard temperature sensor, multiple temperature sensor to be measured is connect with data collector host respectively.The device of the utility model can provide the 0.0001 DEG C/5min Wen Yuan of rate of change；It is not tight and easy to assembly to laboratory environment requirement, it is easy to carry.
Description
Technical field
The utility model is related to measure or detection field, it can be used for metering, the index detection more particularly to one of thermometer
Kind temperature high resolution detection device.
Background technology
In quality system, metering is the most important part of quality system；It says, is tightened quality control also just in some sense
It is to improve stoichiometric level.And as the temperature measurement of one of several detectable physical quantitys, mainly include accuracy, linear
The detection of degree, stability etc., comparatively, the detection of temperature resolving power is relatively fewer, this is mainly by present detector
Device parameter is limited.
And it is general industry, agricultural, meteorological or medically, requirement for temperature resolving power 0.01~0.001 DEG C it
Between, rarely have requirement resolving power up to 0.0001 DEG C of even higher industry, to detection, calibration etc. of the metering system for resolving power
Also there is not breakthrough in recent years.And seismic industry, particularly in China, it is established that about 400 mouthfuls of observation well constructions it is complete
State's property profession observation grid.Due to the most of depth in 100~1000m of water temperature sensor fitting depth, be less susceptible to by
The interference of earth's surface human activity；From the point of view of the summary of many shake examples, water temperature is very clear for the left lateral strike slip process of earthquake；And
Many times before earthquake, water temperature, which has been recorded, compares clearly Precursor abnormal information；It can be seen that earthquake prediction is explored in temperature observation
For, there is important scientific meaning.From the point of view of these shake examples, water temperature abnormal amplitudes value is generally in some thousandths of degree to hundred before shaking
/ degree, this also requires that the water temperature instrument applied to earthquake prediction must be with the feature of high resolution.Conversely, because water temperature is different
It often mainly distinguishes, the mainly relative quantity variation of consideration, therefore accuracy of measurement is required opposite from change shape
It is relatively low.In CONTINENTAL AREA OF CHINA, be applied to earthquake monitoring stations and networks thermometer must resolving power be 0.0001 DEG C, and accuracy be ±
0.03℃。
The difficult point of 0.0001 DEG C of temperature resolving power detection is, what the whole world can not temporarily provide controllable 0.0001 DEG C of variation can
Temperature control source；Even global temperatures measuring equipment mark post enterprise-U.S.'s fluke thermostat, maintainable temperature stability exist
± 0.0015 DEG C and uniformity are in ± 0.003 DEG C of level.As it can be seen that the detection of temperature resolving power, key point is how to carry
For the Wen Yuan of 0.0001 DEG C of resolving power.For the observation of seismic industry water temperature, temperature observation technology requires have its particularity, right
Accuracy requirement is ± 0.03 DEG C, and resolving power requirement is 0.0001 DEG C；Resolving power index 2 magnitudes higher than accuracy index,
This is also the particularity of temperature resolving power detection scheme.
Utility model content
For the disadvantages mentioned above of the prior art, the utility model provides a kind of temperature high resolution detection device, right
In the case that accuracy requirement is not high, the controllable temperature source of 0.0001 DEG C of variation is realized, is the inspection of 0.0001 DEG C of temperature resolving power
Survey provides technical guarantee.
A kind of temperature high resolution detection device of the utility model, including：One insulating box, the insulating box have chamber
Body, the cavity is interior to be distributed with uniform thermal field and with slowly temperature changing process；One standard temperature sensor
And multiple temperature sensors to be measured, it is set in the cavity of the insulating box, the standard temperature sensor is for measuring institute
State cavity inner temperature variation tendency, wherein the branched temperature sensor to be measured surrounds regular polygon, is each positioned at described just polygon
The position on the vertex of shape, the standard temperature sensor are positioned over the center of the multiple temperature sensor to be measured, the cavity
Interior filling water or special oil, the water or special oil are to the journey for submerging the standard temperature sensor and temperature sensor to be measured
Degree, the external bridge for measuring temperature of standard temperature sensor, the multiple temperature sensor to be measured respectively with data collector host
Connection.
Preferably, the standard temperature sensor has protection shell.
Preferably, the multiple temperature sensor to be measured is 2,4 or 6, when the temperature sensor to be measured is 2
When, the standard temperature sensor is located at the centre of 2 temperature sensors to be measured.
Preferably, the cavity uses Dewar bottle to ensure heat insulation effect excellent in the cavity.
Preferably, there is the containment portion of the insulating box insulating layer, the outside of the insulating layer to have shell, the chamber
Body, insulating layer and shell constitute the babinet of the insulating box.
Preferably, the insulating layer is sealed using thermal insulation foaming agent.
Preferably, the standard temperature sensor has the resolving power of a ten thousandth or more.
Preferably, the standard temperature sensor is platinum resistance temperature sensor.
Preferably, the standard temperature sensor and multiple temperature sensors to be measured are fixed by the bracket in the cavity
Interior, the holder is made of the good material of thermal conductivity, and the good material of thermal conductivity is stainless steel plate or copper coin.
Preferably, the special oil is calibration constant temperature tank liquor.
The utility model has the advantages that：
1, the temperature high resolution detection device of the utility model can provide the 0.0001 DEG C/5min Wen Yuan of rate of change；
2, the temperature high resolution detection device of the utility model requires laboratory environment very not harsh, allows room
Temperature has fluctuation；
3, the temperature high resolution detection device of the utility model is easy to assembly, easy to carry.
Description of the drawings
Fig. 1 is the structure diagram of the temperature high resolution detection device of one embodiment of the utility model；
Fig. 2 is the plane signal of the insulating box of the temperature high resolution detection device of one embodiment of the utility model
Figure；
Fig. 3 is the three-dimensional signal of the insulating box of the temperature high resolution detection device of one embodiment of the utility model
Figure.
Specific implementation mode
The embodiment of the utility model is explained below with reference to Figure of description.It should be noted that this theory
Involved embodiment is not exhausted in bright book, does not represent unique embodiment of the utility model.It is corresponding real below
It applies example to be intended merely to clearly illustrate the utility model content of the utility model patent, not to the restriction to embodiments thereof.
For one of ordinary skill in the field, various forms of variations can also be made on the basis of such embodiment illustrates
And change, every technical concept for belonging to the utility model and utility model content and obvious changes or variations also exist
Within the scope of protection of the utility model.
Fig. 1 is the structure diagram of the temperature high resolution detection device of one embodiment of the utility model；Fig. 2 is this reality
With the floor map (schematic top plan view) of the insulating box of the temperature high resolution detection device of novel one embodiment；Fig. 3
It is the stereoscopic schematic diagram of the insulating box of the temperature high resolution detection device of one embodiment of the utility model, does not show in Fig. 3
Go out the outer shell of insulating box.
As shown in Figures 1 to 3, a kind of temperature high resolution detection device of the utility model, including an insulating box 1, standard
Temperature sensor 2 and temperature sensor to be measured 3.The insulating box 1 has cavity 11, has uniform thermal field in the cavity
Distribution and slowly temperature changing process.To ensure to have the distribution of uniform thermal field, cavity volume unsuitable in cavity 11
It is excessive, it is advisable so that the standard temperature sensor needed and temperature sensor to be measured compact can be placed.Preferably, the cavity 11
Size can be 16cm × 16cm × 60cm (wide × wide × deep).In a preferred embodiment, the cavity 11 is using figure
Watt bottle is kept the temperature, and to ensure heat insulation effect excellent in cavity, uniform thermal field is kept to be distributed.The cavity of the insulating box 1
Also there is insulating layer 12 to reach heat insulation effect outside 11, there is shell 13, the cavity 11 to protect for the outside of the insulating layer 12
Warm layer 12 and shell 13 constitute the babinet of the insulating box 1.Wherein, it is close that thermal insulation foaming agent progress may be used in the insulating layer 12
It seals.
Also there are one standards for tool in the insulating box of the temperature high resolution detection device of one embodiment of the utility model
Temperature sensor 2 and six temperature sensors 3 to be measured, these sensors may be contained in the cavity 11 of the insulating box 1.Institute
Standard temperature sensor 2 is stated for measuring temperature changing trend in the cavity 11.The standard temperature sensor 2 should have ten thousand
/ mono- or more resolving power can be the standard temperature sensor by measuring institute's inspection.In addition, to prevent normal temperature from passing
Sensor 2 damages, and can customize the protection shell of the standard temperature sensor 2.In the present embodiment, the standard temperature sensor
2 be platinum resistance temperature sensor.
Specifically, described six temperature sensors 3 to be measured surround regular hexagon, are each positioned at the vertex of the regular hexagon
Position, the standard temperature sensor 2 are positioned over the center of described six temperature sensors 3 to be measured.Form in this way, can
Compactly to fix these temperature sensors in the uniformity in insulating box, advantageously ensuring that thermal field is distributed in cavity 11.It is preferred that
Ground, the standard temperature sensor and multiple temperature sensors to be measured are fixed on by holder (not shown) in the cavity 11,
The good material of holder thermal conductivity is made.Preferably, the good material of the thermal conductivity can be stainless steel plate or copper coin.
Under normal circumstances, it is advisable at most placing 6 temperature sensors to be measured.Certainly, in the temperature sensing to be measured for forming regular hexagon
In the case of device fixed point, certain fixed points can also be made vacant.It is less than 6 temperature sensors to be measured, example that is, placing
As only placed 2 or 4 temperature sensors to be measured.In a further embodiment, the multiple temperature sensor to be measured be 2 or
In the case of 4, the temperature sensor fixed point to be measured of other forms can also be formed, such as when the temperature sensor to be measured
When being 2, the standard temperature sensor is located at the centre of 2 temperature sensors to be measured.When the temperature sensing to be measured
When device is 4,4 temperature sensors to be measured can form square shape, and each sensor is located at the vertex position of square, and
Standard temperature sensor is located at the center of the square.
Preferably, it is contemplated that air easily flows, filling water or the larger special oil of specific heat in the cavity 11, the water or
For special oil to the degree for submerging the standard temperature sensor and temperature sensor to be measured, the special oil is, for example, to calibrate constant temperature
Tank liquor can be further ensured that the uniformity of thermal field in the cavity of insulating box in this way.
In addition, a kind of temperature high resolution detection device of the utility model further includes bridge for measuring temperature 4 and data collector
Host 5, wherein 2 external bridge for measuring temperature 4 of the standard temperature sensor, the multiple temperature sensor 3 to be measured respectively with data
Collector host 5 connects.The temperature data that standard temperature sensor 2 can be observed by bridge for measuring temperature 4, passes through data collector
Host 5 can obtain the temperature data of temperature sensor 3 to be measured.In this way, the temperature data by comparing standard temperature sensor 2
With the temperature data of temperature sensor 3 to be measured, so that it may to obtain the resolving power of dut temperature sensor 3.Certainly, normal temperature passes
Sensor and temperature sensor to be measured can also be connect with other temperature-measuring parts to obtain its temperature data.
In addition, the temperature high resolution detection device of the utility model is before use, answer first test laboratory, not cause
The acute variation of temperature, test phase laboratory closing, excludes human activity.Due to the splendid heat insulation effect of insulating box, thus
It can realize the slowly varying of cavity inner temperature：Cavity inner temperature diurnal variation amplitude<0.02 DEG C/d, when 0.0001 DEG C of longest is stable
Between up to 5 minutes or more.Standard temperature sensor measurement data is the temperature changing trend in thermotank cavity, due to standard temperature
The resolving power of sensor is spent below a ten thousandth (i.e. 0.0001 DEG C or less), by the temperature for being tested (i.e. to be measured) temperature sensor
The temperature variation data for spending delta data and standard temperature sensor compares, and can objectively obtain point of dut temperature sensor
Distinguish power.That is, if standard temperature sensor can measure 0.0001 DEG C of temperature change below here, illustrate in thermotank cavity
Fine temperature variation be implicitly present in, in this case, if dut temperature sensor also obtains 0.0001 DEG C or less
Temperature variation data, then illustrate that the resolving power of dut temperature sensor is objective reality, rather than due to instrument internal
Acquisitions are set etc..
By above-mentioned structure, the temperature high resolution detection device of the utility model can provide 0.0001 DEG C/5min changes
Change the Wen Yuan of rate；And the temperature high resolution detection device of the utility model is not very harsh to laboratory environment requirement,
Permissible room temperature has fluctuation；In addition, the temperature high resolution detection device of the utility model is easy to assembly, it is easy to carry.
Obviously, those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate this
Utility model, and being not used as the restriction to the utility model, if in the spirit of the utility model, to
Variation, the modification of the upper embodiment will all be fallen in the Claims scope of the utility model.
Claims (10)
1. a kind of temperature high resolution detection device, which is characterized in that including：
One insulating box, the insulating box have cavity；
One standard temperature sensor and multiple temperature sensors to be measured, are set in the cavity of the insulating box, the standard
Temperature sensor is used to measure the cavity inner temperature variation tendency,
Wherein, the multiple temperature sensor to be measured surrounds regular polygon, is each positioned at the position on the vertex of the regular polygon, institute
The center that standard temperature sensor is positioned over the multiple temperature sensor to be measured is stated,
Filling water or special oil, the water or special oil are to submerging the standard temperature sensor and wait for testing temperature in the cavity
The degree of sensor,
The external bridge for measuring temperature of standard temperature sensor, the multiple temperature sensor to be measured respectively with data collector host
Connection.
2. temperature high resolution detection device according to claim 1, which is characterized in that the standard temperature sensor tool
There is protection shell.
3. temperature high resolution detection device according to claim 1, which is characterized in that the multiple temperature sensing to be measured
Device be 2,4 or 6, when the temperature sensor to be measured be 2 when, the standard temperature sensor be located at 2 described in wait for
The centre of testing temperature sensor.
4. temperature high resolution detection device according to claim 1, which is characterized in that the cavity use Dewar bottle with
Ensure heat insulation effect excellent in the cavity.
5. temperature high resolution detection device according to claim 1, which is characterized in that the containment portion of the insulating box
With insulating layer, the outside of the insulating layer has shell, and the cavity, insulating layer and shell constitute the case of the insulating box
Body.
6. temperature high resolution detection device according to claim 5, which is characterized in that the insulating layer is sent out using heat preservation
Infusion is sealed.
7. temperature high resolution detection device according to claim 1, which is characterized in that the standard temperature sensor tool
There is the resolving power of a ten thousandth or more.
8. temperature high resolution detection device according to claim 7, which is characterized in that the standard temperature sensor is
Platinum resistance temperature sensor.
9. temperature high resolution detection device according to claim 1, which is characterized in that the standard temperature sensor and
Multiple temperature sensors to be measured are fixed by the bracket in the cavity, and the holder is made of the good material of thermal conductivity,
The good material of thermal conductivity is stainless steel plate or copper coin.
10. temperature high resolution detection device according to claim 1, which is characterized in that the special oil is that calibration is permanent
Warm tank liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721787889.8U CN207622885U (en) | 2017-12-20 | 2017-12-20 | A kind of temperature high resolution detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721787889.8U CN207622885U (en) | 2017-12-20 | 2017-12-20 | A kind of temperature high resolution detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207622885U true CN207622885U (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721787889.8U Active CN207622885U (en) | 2017-12-20 | 2017-12-20 | A kind of temperature high resolution detection device |
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| Country | Link |
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| CN (1) | CN207622885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086650A (en) * | 2019-12-21 | 2020-05-01 | 国营芜湖机械厂 | General test platform for airborne temperature-sensing sensor |
-
2017
- 2017-12-20 CN CN201721787889.8U patent/CN207622885U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086650A (en) * | 2019-12-21 | 2020-05-01 | 国营芜湖机械厂 | General test platform for airborne temperature-sensing sensor |
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