CN220583609U - Spherical blackbody radiation source - Google Patents
Spherical blackbody radiation source Download PDFInfo
- Publication number
- CN220583609U CN220583609U CN202420236806.XU CN202420236806U CN220583609U CN 220583609 U CN220583609 U CN 220583609U CN 202420236806 U CN202420236806 U CN 202420236806U CN 220583609 U CN220583609 U CN 220583609U
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- Prior art keywords
- spherical
- blackbody
- connecting rod
- sensor
- temperature
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- 230000005457 Black-body radiation Effects 0.000 title claims abstract description 25
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000012774 insulation material Substances 0.000 claims abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 101100522110 Oryza sativa subsp. japonica PHT1-10 gene Proteins 0.000 claims description 2
- 101100522109 Pinus taeda PT10 gene Proteins 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 16
- 238000005259 measurement Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Radiation Pyrometers (AREA)
Abstract
The utility model relates to the technical field of blackbody radiation sources, in particular to a spherical blackbody radiation source, which comprises a spherical blackbody body, a blackbody fixing bracket, a spherical fixing terminal, a temperature control sensor and a temperature measurement sensor, wherein the spherical blackbody fixing terminal is arranged on the blackbody fixing bracket; the inner surface of the spherical blackbody body is covered with heating resistance wires covering the heat insulation material layer, and the outer surface of the spherical blackbody body is coated with a high-emissivity coating; the blackbody fixing support comprises a base and a hollow connecting rod, one end of the connecting rod is fixedly connected with the base, the other end of the connecting rod is in threaded connection with the spherical blackbody body, and an aviation plug is fixedly installed on the connecting rod; the spherical fixing terminal is adhered to the inside of the spherical blackbody body, the temperature control sensor and the temperature measurement sensor are fixed on the spherical fixing terminal, and the wires of the temperature control sensor and the temperature measurement sensor are connected with the aviation plug. The spherical blackbody radiation source provided by the utility model adopts the external cavity type radiation cavity, so that the blackbody radiation source can radiate in all directions around, and the calibration precision is ensured.
Description
Technical Field
The utility model relates to the technical field of blackbody radiation sources, in particular to a blackbody radiation source based on an outer spherical structure.
Background
The blackbody radiation source is used as an infrared standard radiation source and is widely applied to calibration of infrared remote sensors and thermal imagers. With the development of infrared measurement and control technology, the application of the infrared measurement and control technology is more and more extensive, and the focal length and the field of view of an infrared camera are continuously increased, which requires that a blackbody radiation source can have a larger size and can observe in a wider space.
At present, a conventional blackbody radiation source is usually an inner cavity type radiation cavity, a high-emissivity coating is coated on the cavity wall of the inner cavity, infrared radiation is finally emitted from a small hole of the blackbody, the inner cavity type blackbody radiation source can only emit the infrared radiation along a single direction, and the requirements of radiation temperature to various angles, namely the whole space, cannot be met, so that the calibration precision is influenced.
Disclosure of Invention
In view of the problem that the radiation direction of the traditional blackbody radiation source is single, the utility model provides a spherical blackbody radiation source, and an external cavity type radiation cavity is adopted, so that the blackbody radiation source can radiate in all directions around, and the calibration precision is ensured.
The utility model provides a spherical blackbody radiation source, which comprises a spherical blackbody body, a blackbody fixing bracket, a spherical fixing terminal, a temperature control sensor and a temperature measurement sensor, wherein the spherical blackbody body is provided with a plurality of spherical holes; the inner surface of the spherical blackbody body is covered with heating resistance wires covering the heat insulation material layer, and the outer surface of the spherical blackbody body is coated with a high-emissivity coating; the blackbody fixing support comprises a base and a hollow connecting rod, one end of the connecting rod is fixedly connected with the base, the other end of the connecting rod is in threaded connection with the spherical blackbody body, and an aviation plug is fixedly installed on the connecting rod; the spherical fixing terminal is adhered to the inside of the spherical blackbody body, the temperature control sensor and the temperature measurement sensor are fixed on the spherical fixing terminal, and the wires of the temperature control sensor and the temperature measurement sensor are connected with the aviation plug.
Preferably, the temperature control sensor is a PT100 platinum resistance temperature sensor, and the temperature measurement sensor is a PT10 platinum resistance temperature sensor.
Preferably, the base and the connecting rod are of an integrated structure, the base is of a circular structure, and the base is provided with a fixed mounting hole.
Compared with the prior art, the spherical blackbody radiation source provided by the utility model adopts the spherical body, and the high-emissivity layer is coated on the outer surface of the spherical body to form the external cavity type radiation cavity, so that the blackbody radiation source can conduct infrared radiation in all directions around, and the calibration precision is ensured.
Drawings
Fig. 1 is a schematic structural view of a spherical blackbody radiation source according to an embodiment of the present utility model.
Reference numerals: the high emissivity coating 11, the black body fixing support 2, the base 21, the connecting rod 22, the spherical fixing terminal 3, the temperature control sensor 41, the temperature measuring sensor 42, the heating resistance wire 5, the heat insulation material layer 6 and the aviation plug 7.
Detailed Description
Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. In the following description, like modules are denoted by like reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, a detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limiting the utility model.
Fig. 1 illustrates a structure of a spherical blackbody radiation source provided according to an embodiment of the present utility model.
As shown in fig. 1, the spherical blackbody radiation source provided by the embodiment of the utility model comprises a spherical blackbody body 1, a blackbody fixing bracket 2, a spherical fixing terminal 3, a temperature control sensor 41 and a temperature measurement sensor 42; wherein, spherical blackbody body 1 is the metal ball, through welding shaping, has high emissivity coating 11 at the surface spraying of spherical blackbody body 1, forms the blackbody and is outer chamber type radiation chamber, evenly distributes at the internal surface of spherical blackbody body 1 has heating resistance wire 5, and heating resistance wire 5 heats spherical blackbody body 1 and produces the radiation, and the surface cover at heating resistance wire 5 has heat preservation material layer 6, guarantees that the blackbody radiation source is very even to the temperature of radiation all around.
The blackbody fixing support 2 comprises a base 21 and a connecting rod 22 which are integrally formed, wherein the base 21 is located at one end of the connecting rod 22, a threaded rod is formed by processing the other end of the connecting rod 22, a threaded hole is formed in the spherical blackbody body 1, the connecting rod 22 is in threaded connection with the spherical blackbody body 1, and the connecting rod 22 is of a hollow structure and is used for wiring. The base 21 and the connecting rod 22 can be of a split structure, and the connection mode between the base 21 and the connecting rod 22 can be threaded connection.
An aviation plug 7 is fixedly arranged on the connecting rod 22 and is used for leading out wires inside the spherical blackbody body 1.
The base 21 is provided with a fixed mounting hole, and the utility model can be vertically arranged on the bottom surface through the base 21, and can also be hoisted on structures such as an unmanned aerial vehicle platform, an airborne platform and the like through the base 21.
The spherical fixed terminal 3 is adhered to the inside of the spherical blackbody body 1 through high-temperature glue, the temperature control sensor 41 and the temperature measurement sensor 42 are fixed on the spherical fixed terminal 3, the wires of the temperature control sensor 41 and the temperature measurement sensor 42 penetrate from the inside of the connecting rod 22 and are connected with the aviation plug 7, the wires of the heating resistance wire 5 also penetrate from the inside of the connecting rod 22 and are connected with the aviation plug 7, and the outgoing wires of the aviation plug 7 are connected with the temperature controller.
The temperature control sensor 41 and the temperature measurement sensor 42 are used for measuring the temperature inside the spherical blackbody body 1, the measurement precision of the temperature control sensor 41 and the measurement precision of the temperature measurement sensor 42 are different, the measurement result of the temperature measurement sensor 42 and the measurement result of the temperature control sensor 41 are compared, if the measurement results of the temperature control sensor 41 and the measurement result of the temperature measurement sensor are the same, the measurement result of the temperature control sensor 41 is accurate, if the measurement results of the temperature control sensor 41 and the measurement result of the temperature measurement sensor are different, the measurement result of the temperature control sensor 41 is inaccurate, and the difference value of the two measurement results is taken as a correction amount to control the heating resistance wire 5.
The working principle of the utility model is as follows: the temperature controller controls the heating resistance wire 5 to heat, the spherical blackbody body 1 emits infrared radiation to all directions all around, the uniformity of the infrared radiation is guaranteed through the heat insulation material layer 6, the temperature inside the spherical blackbody body 1 is measured through the temperature control sensor 41 and the temperature measurement sensor 42 and is transmitted to the temperature controller, the temperature controller controls the heating capacity of the heating resistance wire 5, and the adjustment of the infrared radiation of the spherical blackbody body 1 is realized so as to meet the calibration requirement.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (3)
1. The spherical blackbody radiation source is characterized by comprising a spherical blackbody body, a blackbody fixing bracket, a spherical fixing terminal, a temperature control sensor and a temperature measurement sensor; wherein,
the inner surface of the spherical blackbody body is covered with heating resistance wires covering a heat insulation material layer, and the outer surface of the spherical blackbody body is coated with a high-emissivity coating;
the blackbody fixing support comprises a base and a hollow connecting rod, one end of the connecting rod is fixedly connected with the base, the other end of the connecting rod is in threaded connection with the spherical blackbody body, and an aviation plug is fixedly installed on the connecting rod;
the spherical fixing terminal is adhered to the inside of the spherical blackbody body, the temperature control sensor and the temperature measurement sensor are fixed on the spherical fixing terminal, and the temperature control sensor and the temperature measurement sensor are connected with the aviation plug through wires.
2. The spherical blackbody radiation source according to claim 1, wherein the temperature-controlling sensor is a PT100 platinum resistance temperature sensor and the temperature-measuring sensor is a PT10 platinum resistance temperature sensor.
3. The spherical blackbody radiation source according to claim 1, wherein the base and the connecting rod are integrally formed, the base is of a circular structure, and the base is provided with a fixed mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420236806.XU CN220583609U (en) | 2024-01-31 | 2024-01-31 | Spherical blackbody radiation source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420236806.XU CN220583609U (en) | 2024-01-31 | 2024-01-31 | Spherical blackbody radiation source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220583609U true CN220583609U (en) | 2024-03-12 |
Family
ID=90111043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420236806.XU Active CN220583609U (en) | 2024-01-31 | 2024-01-31 | Spherical blackbody radiation source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220583609U (en) |
-
2024
- 2024-01-31 CN CN202420236806.XU patent/CN220583609U/en active Active
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