A blackbody radiation source and heating apparatus therefor

Abstract

This invention discloses a blackbody radiation source and its heating device, comprising a heat-conducting base, a heat-transfer base, and a blackbody radiation source stacked sequentially. The heat-conducting base, the heat-transfer base, and the blackbody radiation source are all concave downwards, with the inner concave surface of the blackbody radiation source being curved. A heating module is disposed on the outer convex surface of the heat-conducting base. The gap between the heat-conducting base and the blackbody radiation source is uniformly filled with a heat-conducting solid filling medium, allowing the heat from the heating module to be uniformly transferred to the blackbody radiation source, thereby heating the blackbody radiation source. This invention is used in temperature measurement modules operating in K-mode scenarios to transfer heat to a curved blackbody radiation source, achieving uniform heating of the curved blackbody with stable heat transfer performance, effectively improving the K-mode performance of the module.

Description

Technical Field

[0001] This invention relates to the field of blackbody heating technology, and in particular to a blackbody radiation source and its heating device. Background Technology

[0002] Planar blackbody devices use a planar blackbody radiation source, which is generally used for K-axis imaging in modules with a small field of view. For modules with a larger field of view, in order to prevent the module from acquiring areas outside the blackbody radiation source, the area of ​​the blackbody radiation source needs to be increased several times, which greatly increases the size and cost of the device. In addition, if the angle between the receiving angle and the normal of the radiation surface unit at the edge of the module's field of view is too large, it will reduce the K-axis imaging effect of the module and affect the module's temperature measurement accuracy and imaging effect.

[0003] For large field-of-view modules requiring high temperature measurement accuracy, the curved surface is typically spherical. A spherical surface ensures good consistency between the receiving angle and the normal angle of the radiating element, significantly improving the module's K-axis performance. However, the heat transfer medium in a curved surface water bath is a liquid, usually a stable, non-volatile liquid such as dimethyl silicone oil. To ensure long-term use, a strict seal is required between the blackbody radiation source and the heating element. During liquid heating, the pressure in the sealed space gradually increases. To ensure product safety, water bath blackbody devices often limit the temperature of the liquid medium; the operating temperature is generally between 10-120°C. Further increasing the temperature and pressure in the sealed space significantly increases the requirements for product structural stability, making water bath curved blackbody devices exceptionally expensive. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a blackbody radiation source and its heating device for use in K-mode applications of temperature measurement modules. The device transfers heat to the curved blackbody radiation source, achieving uniform heating of the curved blackbody with stable heat transfer and effectively improving the K-mode performance of the module.

[0005] The technical solution to the problem of this invention is to propose a blackbody radiation source, wherein the blackbody radiation source has a concave structure and the concave surface of the blackbody radiation source is a curved surface.

[0006] Furthermore, the concave surface of the blackbody radiation source is a sphere, and the depth of the sphere is greater than the acquisition surface of the infrared module.

[0007] Furthermore, the concave surface of the blackbody radiation source is aspherical, and the depth of the aspherical surface is greater than the acquisition surface of the infrared module.

[0008] A heating device for a blackbody radiation source is also proposed, comprising a heating device for heating the aforementioned blackbody radiation source, the heating device comprising a heat-conducting seat and a heat-transfer seat stacked sequentially, both the heat-conducting seat and the heat-transfer seat being concave structures, the blackbody radiation source being embedded in the concave structure of the heat-transfer seat; the convex surface of the heat-conducting seat is connected to a heating module, the heating module sequentially transferring heat to the heat-conducting seat, the heat-transfer seat and the blackbody radiation source.

[0009] Furthermore, it also includes a housing, a cover plate that fits onto the upper port of the housing, the heat-conducting seat being embedded in the port of the housing, and the cover plate covering the extended frame of the heat-conducting seat, the heat transfer seat, and the blackbody radiation source; a perforation is provided in the center of the cover plate, the perforation allowing the concave surface of the blackbody radiation source to be open to the outside.

[0010] Furthermore, multiple layers of gaps for filling solid heat transfer medium are provided between the heat-conducting base, the heat transfer base, and the blackbody radiation source. The filling medium in the gaps near the heat-conducting base is a flexible medium, and the filling medium in the gaps near the blackbody radiation source is a particulate medium.

[0011] Specifically, the gap includes a first filling gap and a second filling gap, wherein the gap width is the same at all points in the first filling gap and the gap width is the same at all points in the second filling gap.

[0012] Furthermore, the inner diameter of the heat-conducting seat is larger than the outer diameter of the heat transfer seat, so that when the heat transfer seat is embedded in the inner cavity of the heat-conducting seat, a first filling gap is formed between the heat-conducting seat and the heat transfer seat.

[0013] Furthermore, the filling medium in the first filling gap is a flexible medium, which allows for sufficient thermal contact between the heat-conducting base and the heat-transfer base.

[0014] Furthermore, the inner diameter of the heat transfer base is larger than the outer diameter of the blackbody radiation source, so that when the blackbody radiation source is embedded in the inner cavity of the heat transfer base, a second filling gap is formed between the heat transfer base and the blackbody radiation source.

[0015] Furthermore, the filling medium in the second filling void is a particulate medium.

[0016] Furthermore, the outer convex surface of the heat-conducting base has multiple side cut surfaces along the circumferential direction, and the bottom of the heat-conducting base has a bottom cut surface. The multiple side cut surfaces are evenly distributed around the bottom cut surface. The heating module includes a first heating module and a second heating module. The first heating module is installed on the circumferentially opened side cut surface, and the second heating module is installed on the bottom cut surface. The heating elements of the first heating module and the second heating module are both attached to the cut surfaces of the heat-conducting base.

[0017] Preferably, the outer edge of the heat-conducting base extends horizontally to form a heat-conducting frame, and the outer edge of the heat transfer base extends horizontally to form a heat transfer frame. The heat transfer frame is fixedly installed on the heat-conducting frame, and the heat transfer frame can completely cover the upper port of the first filling gap, so that when the heat transfer base is aligned and installed in the heat-conducting base, the first filling gap can be sealed. The heat transfer base has a filling hole near the heat transfer frame.

[0018] Preferably, the outer edge of the blackbody radiation source extends horizontally to form a fixed frame, and the heat transfer frame has a groove for fitting and installing the fixed frame, so that when the blackbody radiation source is aligned and installed in the heat transfer seat, the fixed frame can close the second filling gap.

[0019] Preferably, the housing includes a front plate, a heat sink, a back plate, an operation plate, and a bottom plate. A cooling fan is provided on the heat sink, a relay and a switching power supply are provided on the back plate, and a control switch and a temperature controller are provided on the operation plate. A fuse is provided on the heat-conducting frame of the heat-conducting base, and a temperature sensor is provided at the bottom of the heat-conducting base.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention relates to a blackbody radiation source and its heating device. The curved blackbody radiation source is heated by a heat-conducting base and a heat-transfer base, and the heat is transferred evenly. As long as the curvature depth of the curved blackbody radiation source exceeds the acquisition surface of the infrared module, no matter how large the field of view of the infrared module is, it will not acquire the area outside the blackbody radiation source.

[0022] For large field-of-view modules where temperature measurement accuracy is not so high, the curved surface in this application can be aspherical. This can effectively reduce the product's thickness dimension, thereby reducing product size and cost, while still meeting the requirements for K-type infrared modules in large field-of-view applications.

[0023] The heating device of this application can also use a solid medium to fill the space between the heat-conducting base, the heat transfer base, and the curved blackbody radiation source, greatly reducing the sealing requirements. Only the solid medium needs to be prevented from overflowing, which effectively simplifies the structure and reduces costs. Compared to water bath heating, it can effectively increase the upper limit of product temperature measurement. The long-term operating temperature range is 10-220℃, covering the current requirements for infrared modules.

[0024] The blackbody radiation source and its heating device proposed in this application can both meet the practical needs of large field-of-view modules with excessively large acquisition range and reduce costs. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0026] Figure 1 This is an exploded view of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0027] Figure 2 This is a main body diagram of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view of the external heating structure of a blackbody radiation source according to an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the heating module of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the dielectric filling of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0032] Figure 7 This is a bottom view of a heating device for a blackbody radiation source according to an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of a curved blackbody radiation source used in a module for K-axis radiation according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of a planar blackbody radiation source used in a module to perform K-axis radiation, as provided in an embodiment of the present invention.

[0035] In the diagram: 1. Housing; 2. Heat-conducting base; 3. Heat transfer base; 4. Blackbody radiation source; 5. Cover plate; 6. First heating module; 7. Second heating module; 8. First filling gap; 9. Second filling gap; 10. Infrared module; 11. Front plate; 12. Heat sink; 13. Back plate; 14. Operation panel; 15. Base plate; 16. Temperature sensor; 17. Fuse; 21. Side section; 22. Bottom section; 31. Filling hole; 61. Heat insulation plate; 62. Side heating element; 63. Fixing plate; 71. Fixing plate; 72. Bottom heating element; 121. Cooling fan; 131. Relay; 132. Switching power supply; 141. Control switch; 142. Temperature controller. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] First, please refer to Figure 9 This is a schematic diagram of a planar blackbody radiation source performing K-axis imaging on a module. The infrared module 10 can easily collect data from areas outside the blackbody radiation source, thus requiring a large area of ​​the planar radiation source, which greatly increases the size and cost of the device. Furthermore, if the angle between the receiving angle at the edge of the module's field of view and the normal of the radiation surface unit is too large, it will reduce the K-axis imaging effect of the module and affect the module's temperature measurement accuracy and imaging effect.

[0038] To address the above problems, this invention proposes a blackbody radiation source. Please refer to [link / reference]. Figures 1-7 The blackbody radiation source 4 has a concave structure, and the concave surface of the blackbody radiation source 4 is curved. In one possible implementation, the concave curved surface of the blackbody radiation source 4 is spherical, and the depth of the spherical surface is greater than the acquisition surface of the infrared module 10; in another possible implementation, the concave curved surface of the blackbody radiation source 4 is aspherical, and the depth of the aspherical surface is greater than the acquisition surface of the infrared module 10.

[0039] Based on the aforementioned concave structure of the blackbody radiation source 4, this invention also proposes a heating device for the blackbody radiation source, used to heat the curved structure of the blackbody radiation source 4. The heating device includes a heat-conducting seat 2 and a heat-transfer seat 3 stacked sequentially. Both the heat-conducting seat 2 and the heat-transfer seat 3 are concave structures, and the blackbody radiation source 4 is embedded in the concave structure of the heat-transfer seat 3. The outer convex surface of the heat-conducting seat 2 is connected to a heating module, and the heating module sequentially transfers heat to the heat-conducting seat 2, the heat-transfer seat 3, and the blackbody radiation source 4.

[0040] In this application, the heat-conducting base 2, the heat-transfer base 3, and the blackbody radiation source 4 are all concave structures. The blackbody radiation source 4 can be designed as a standard spherical concave structure according to actual needs, with the concave surface being a smooth curved surface. For large-field-of-view modules with high temperature measurement accuracy requirements, the concave curved surface can be spherical, ensuring good consistency between the field-of-view receiving angle and the normal angle of the radiation surface unit, significantly improving the module's K-axis performance. For large-field-of-view modules with lower temperature measurement accuracy, the concave curved surface can be aspherical, effectively reducing the product's thickness dimension while still meeting the K-axis performance requirements of the large-field-of-view module, thus reducing product volume and cost.

[0041] It should be made clear that, Figure 8 This is a schematic diagram of a curved blackbody radiation source applied to a module when performing K-axis radiation. Figure 8 It can be seen that as long as the depth of the curved surface exceeds the acquisition surface of the module, no matter how large the field of view of the module is, it will not acquire the area outside the blackbody radiation source. For the two usage environments mentioned above, the depth of the concave curved surface, whether spherical or aspherical, should be greater than the acquisition surface of the infrared module 10; in this case, no matter how large the field of view of the infrared module 10 is, it will not acquire the area outside the blackbody radiation source 4.

[0042] In the embodiments of this application, a spherical surface with a curved surface as the standard is used as an example for illustration. Correspondingly, the main structure of the heat transfer seat 3 and the blackbody radiation source 4 is a concave hemispherical shell structure, and the heat conduction seat 2 has a concave hemispherical cavity for aligning and accommodating the heat transfer seat 3. The convex structure of the heat conduction seat 2 can be cut to facilitate the installation and fixing of the standard heating module.

[0043] In this application, a gap is provided between the heat-conducting base 2 and the blackbody radiation source 4. The gap can be multi-layered, and the gap can be filled with a solid filling medium that can conduct heat, so that the heat of the heating module located on the outer convex surface of the heat-conducting base 2 can be stably, effectively and uniformly transferred to the blackbody radiation source 4, thereby heating the blackbody radiation source 4.

[0044] Based on the stacked structure of the heat-conducting base 2, heat transfer base 3, and blackbody radiation source 4 of this application, the outer edge of the heat-conducting base 2 can extend horizontally to form a heat-conducting frame to facilitate the installation and fixation of the heat-conducting base 2; the outer edge of the heat transfer base 3 can extend horizontally to form a heat transfer frame, which overlaps and is fixed on the heat-conducting frame, so that the heat transfer base 3 can be aligned and installed inside the heat-conducting base 2; the outer edge of the blackbody radiation source 4 can extend horizontally to form a fixing frame, which overlaps and is fixed on the heat transfer frame, so that the blackbody radiation source 4 can be aligned and installed inside the heat transfer base 3.

[0045] In one specific embodiment, the heat-conducting base 2 can be embedded in the housing 1. The housing 1 has a four-sided enclosed and bottom-sealed structure. The heat-conducting base 2 is embedded from the upper port. The heat-conducting frame can be designed to fit the size of the upper port so that the heat-conducting frame and the four side walls of the housing 1 can be fixedly installed by right-angle connectors.

[0046] Furthermore, a cover plate 5 is provided at the upper port of the housing 1 to cover the frame area of ​​the heat-conducting base 2. For example, the cover plate 5 can completely cover the extended frame of the heat-conducting base 2, the heat transfer base 3, and the blackbody radiation source 4; a perforation is provided in the center of the cover plate 5, aligned with the curved surface of the blackbody radiation source 4, allowing the concave curved surface of the blackbody radiation source 4 to be directly exposed. That is, the infrared module 10 can be directly inserted / removed.

[0047] The basic conditions for setting the above-mentioned gaps are met between the heat-conducting seat 2 and the heat-transfer seat 3, and between the heat-transfer seat 3 and the blackbody radiation source 4. Therefore, in the embodiments of this application, the gaps are set at these two locations as examples for illustration.

[0048] In one specific embodiment, the gap may include a first filling gap 8 and a second filling gap 9. The first filling gap 8 is located between the heat-conducting base 2 and the heat-transfer base 3, and the second filling gap 9 is located between the heat-transfer base 3 and the blackbody radiation source 4. Preferably, the gap width is the same at all points in the first filling gap 8 and the gap width is the same at all points in the second filling gap 9.

[0049] Specifically, the inner diameter (recessed size) of the heat-conducting seat 2 is larger than the outer diameter (convex size) of the heat transfer seat 3. Taking the spherical shell structure as an example, the radius of the recessed cavity of the heat-conducting seat 2 is slightly larger than the radius of the convex structure of the heat transfer seat 3, so that when the convex structure of the heat transfer seat 3 is aligned and embedded in the inner cavity of the heat-conducting seat 2, a first filling gap 8 can be formed between the heat-conducting seat 2 and the heat transfer seat 3. The first filling gap 8 is filled with a solid filling medium that can transfer heat.

[0050] The filling medium within the first filling gap 8 is a flexible medium, allowing for sufficient thermal contact between the heat-conducting base 2 and the heat-transfer base 3. The flexible medium may include thermally conductive putty or gel-like silicone grease, etc. Relying on the flexibility of the medium, sufficient thermal contact between the heat-conducting base 2 and the heat-transfer base 3 can be guaranteed, ensuring stable heat transfer performance.

[0051] Specifically, the inner diameter (recessed size) of the heat transfer seat 3 is larger than the outer diameter (convex size) of the blackbody radiation source 4. Taking a spherical shell structure as an example, the radius of the recessed cavity of the heat transfer seat 3 is slightly larger than the radius of the convex structure of the blackbody radiation source 4. This allows a second filling gap 9 to be formed between the heat transfer seat 3 and the blackbody radiation source 4 when the convex structure of the blackbody radiation source 4 is aligned and embedded in the recessed cavity of the heat transfer seat 3. The second filling gap 9 is filled with a solid filling medium capable of heat transfer. The filling medium in the second filling gap 9 is a granular medium. The granular medium may include salt or sand, etc. Such media have excellent heat preservation effects, and the fine particles can ensure the uniformity of contact between the filling medium and the blackbody radiation source 4, thereby ensuring the thermal uniformity of the surface (concave surface) of the blackbody radiation source 4.

[0052] In this application, the filling gap can be closed by extending the frame. The heat transfer frame is fixedly installed on the heat conduction frame, and the heat transfer frame can completely cover the upper port of the first filling gap 8, so that when the heat transfer base 3 is aligned and installed in the heat conduction base 2, the first filling gap 8 can be closed. The outer edge of the blackbody radiation source 4 extends horizontally to form a fixed frame, and the heat transfer frame has a groove for fitting and installing the fixed frame, so that when the blackbody radiation source 4 is aligned and installed in the heat transfer base 3, the fixed frame can close the second filling gap 9.

[0053] Based on the distribution characteristics of the filling gaps in this application, the blackbody radiation source 4 can be fixedly installed to the heat transfer frame on the heat transfer base 3 through the screw holes on the fixed frame to form a radiation assembly. The heat transfer base 3 has a filling hole 31 near the heat transfer frame, through which the medium can be filled into the second filling gap 9. After filling is completed, the filling hole 31 can be sealed. The sealing method can be selected according to the actual situation, such as glue with sealing block, thread with sealing bolt, etc.

[0054] Before fixing the radiating component to the heat-conducting base 2, a layer of flexible medium of uniform thickness can be radiated onto the inner cavity of the heat-conducting base 2. Then, the radiating component is aligned and installed on the heat-conducting base 2. It is understood that both the heat-conducting base 1 and the heat transfer base 3 can be made of hard alloy material. When filling the flexible medium, appropriate pressure can be applied to ensure uniform application of the flexible medium. Finally, the cover plate 5 can be placed on top of the radiating component and fixed with screws.

[0055] Based on the stacked structure of this application, the heat-conducting base 2, the heat transfer base 3, and the blackbody radiation source 4 can be coaxially aligned. Coaxial alignment can be achieved through positioning holes on their respective extended frames, thereby ensuring that the width of each filling gap is basically the same. For example, the heat-conducting frame can be fixedly installed with the housing 1 to maintain a horizontal posture; positioning holes are provided on the heat-conducting frame to cooperate with positioning holes on the heat transfer frame, thereby achieving alignment between the heat transfer base 3 and the heat-conducting base 2; an annular groove can be provided on the heat transfer frame of the heat transfer base 3 so that the fixing frame of the blackbody radiation source 4 can be installed in the groove, thereby achieving alignment between the heat transfer base 3 and the blackbody radiation source 4.

[0056] In this application, the heating source of the blackbody radiation source 4 is located on the outer convex surface of the heat conduction base 2. In order to facilitate efficient contact heat conduction, the curved outer convex surface is obviously not suitable for the existing planar heating plate structure. Therefore, in the embodiment of this application, the outer convex surface of the heat conduction base 2 is cut to form multiple planar heating areas so that the planar heating plate can be attached and used to provide good thermal contact and heat conduction.

[0057] In one specific embodiment, the heat-conducting base 2 has multiple side cut surfaces 21 circumferentially formed on its outer convex surface and a bottom cut surface 22 formed at its bottom. The multiple side cut surfaces 21 are evenly distributed around the bottom cut surface 22. Figure 1 , Figure 7 As shown, the side cut surface 21 is inclined and the bottom cut surface 22 is horizontal. The heating module is installed in close contact with the cut surface, which allows the heating element of the heating module to be fixedly installed in close contact with the cut surface, resulting in stable heat transfer.

[0058] For example, the heating module may include a first heating module 6 and a second heating module 7, wherein the first heating module 6 is fixedly mounted on the side cut surface 21, and the second heating module 7 is fixedly mounted on the bottom cut surface 22. The heating elements of the first heating module 6 and the second heating module 7 are both attached to the cut surface of the heat-conducting base 2.

[0059] Specifically, the first heating module 6 includes a fixing plate 63, a side heating element 62, and a heat insulation plate 61, all attached to the side cut surface 21. The upper end of the fixing plate 63 extends to the lower side of the heat-conducting frame and is fixed thereon, while the lower end of the fixing plate 63 extends to the bottom cut surface 22 and is fixed thereon. The fixing plate 63 has an annular notch at the side cut surface 21. The side heating element 62 has an annular structure. The heat insulation plate 61 is fixedly installed on the outside of the fixing plate 63, allowing the heat insulation plate 61 to press the side heating element 62 into the notch, ensuring a tight fit with the side cut surface 21. A connection cable interface can be provided on the lower side of the annular notch for routing the wires of the side heating element 62. The heat insulation plate 61 and the connection cable interface do not interfere with each other.

[0060] The second heating module 7 includes a fixing plate 71 and a bottom heating element 72 that are attached to the bottom cut surface 22. The bottom heating element 72 has a ring structure. The fixing plate 71 is located on the outside and presses it tightly against the bottom cut surface 22. The fixing plate 71 is fixed to the bottom cut surface 22 by screws and does not conflict with the lower end of the fixing plate 63.

[0061] It is understandable that the rated power and rated voltage of the side heating element 62 and the bottom heating element 72 can be the same, but their dimensions may differ, which can be adjusted according to the actual cross-sectional size. The heat insulation plate 61 and the fixing plate 71 are made of high-temperature resistant plastic, usually bakelite, which can work for a long time at a high temperature of 300℃. The poor thermal conductivity of plastic can reduce heat loss from the heating element. The heating element can be a ceramic heating element, which heats up through electrical control, and the connection method is simply two wires connected to the circuit.

[0062] If necessary, the side heating element 62 can be aligned and attached to the weak point of the circumferential structure of the heat-conducting base 2, so that the heat transfer efficiency is faster and the filling medium is heated quickly.

[0063] Based on practical needs, the housing 1 may include a front plate 11, a heat sink 12, a back plate 13, an operation panel 14, and a bottom plate 15. These plates can be fixedly installed together using right-angle connectors to form a box-like structure. A cooling fan 121 is mounted on the heat sink 12, with its vent connected to the outside. A relay 131 and a switching power supply 132 are mounted on the back plate 13. A control switch 141 and a temperature controller 142 are mounted on the operation panel 14. The control switch 141 is embedded in the outer side of the operation panel 14, and the display section of the temperature controller 142 is located on the outer side of the operation panel 14. A fuse 17 is mounted on the heat-conducting frame of the heat-conducting base 2, located inside the housing 1. A temperature sensor 16 is mounted at the bottom of the heat-conducting base 2, electrically connected to the temperature controller 142, enabling the temperature controller 142 to process the feedback parameters from the temperature sensor 16 and display the corresponding temperature parameters.

[0064] In the embodiments of this application, the second filling gap 9 uses a granular filling medium. When heated, the thermal expansion effect can be eliminated within the second filling gap 9, without causing structural damage to the blackbody radiation source 4, and the integrity of the curved surface can be effectively guaranteed. If necessary, the surface of the blackbody radiation source 4 can be sandblasted and anodized to eliminate the influence of light reflection on the module.

[0065] The above-described contents can be implemented individually or in various combinations, and these variations are all within the protection scope of this invention.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0067] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered within the scope of protection of the present invention.

Claims

1. A heating device for a curved blackbody radiation source, characterized in that, The heating device includes a blackbody radiation source (4) and a heat-conducting seat (2) and a heat-transfer seat (3) stacked in sequence. Both the heat-conducting seat (2) and the heat-transfer seat (3) are concave structures. The blackbody radiation source (4) is embedded in the concave structure of the heat-transfer seat (3). The outer convex surface of the heat-conducting seat (2) is connected to a heating module. The heating module transfers heat to the heat-conducting seat (2), the heat-transfer seat (3) and the blackbody radiation source (4) in sequence. The blackbody radiation source (4) has a concave structure, and the concave surface of the blackbody radiation source (4) is a curved surface. The depth of the curved surface is greater than the acquisition surface of the infrared module (10). A first filling gap (8) is formed between the heat-conducting seat (2) and the heat-transfer seat (3), and the first filling gap (8) is filled with a flexible medium; a second filling gap (9) is formed between the heat-transfer seat (3) and the blackbody radiation source (4), and the filling medium in the second filling gap (9) is a granular medium; a filling hole (31) is provided near the heat transfer frame of the heat transfer seat (3), and the medium is filled into the second filling gap (9) through the filling hole (31).

2. The heating device for a curved blackbody radiation source according to claim 1, characterized in that, The concave surface of the blackbody radiation source (4) is a sphere, and the depth of the sphere is greater than the acquisition surface of the infrared module (10).

3. The heating device for a curved blackbody radiation source according to claim 1, characterized in that, The concave surface of the blackbody radiation source (4) is an aspherical surface, and the depth of the aspherical surface is greater than the acquisition surface of the infrared module (10).

4. The heating device for a curved blackbody radiation source according to claim 1, characterized in that, It also includes a housing (1) and a cover plate (5) that covers the upper port of the housing (1). The heat-conducting seat (2) is embedded in the port of the housing (1). The cover plate (5) covers the extended frame of the heat-conducting seat (2), the heat transfer seat (3) and the blackbody radiation source (4) on all sides. A perforation is provided in the middle of the cover plate (5), which makes the concave surface of the blackbody radiation source (4) open to the outside.

5. The heating device for a curved blackbody radiation source according to claim 1, characterized in that, A gap is provided between the heat-conducting seat (2), the heat-transfer seat (3) and the blackbody radiation source (4). The gap includes a first filling gap (8) and a second filling gap (9). The gap width is the same at all points in the first filling gap (8) and the gap width is the same at all points in the second filling gap (9).

6. The heating device for a curved blackbody radiation source according to claim 5, characterized in that, The inner diameter of the heat-conducting seat (2) is larger than the outer diameter of the heat transfer seat (3), so that when the heat transfer seat (3) is embedded in the inner cavity of the heat-conducting seat (2), a first filling gap (8) is formed between the heat-conducting seat (2) and the heat transfer seat (3).

7. The heating device for a curved blackbody radiation source according to claim 6, characterized in that, The first filling gap (8) is filled with a flexible medium, so that the heat-conducting seat (2) and the heat-transfer seat (3) can make thermal contact.

8. The heating device for a curved blackbody radiation source according to claim 5, characterized in that, The inner diameter of the heat transfer seat (3) is larger than the outer diameter of the blackbody radiation source (4), so that when the blackbody radiation source (4) is embedded in the inner cavity of the heat transfer seat (3), a second filling gap (9) is formed between the heat transfer seat (3) and the blackbody radiation source (4).

9. The heating device for a curved blackbody radiation source according to claim 1, characterized in that, The heat-conducting base (2) has multiple side cut surfaces (21) circumferentially opened on its outer convex surface, and a bottom cut surface (22) is opened at the bottom of the heat-conducting base (2). The multiple side cut surfaces (21) are evenly distributed around the bottom cut surface (22). The heating module includes a first heating module (6) and a second heating module (7). The first heating module (6) is installed on the side cut surface (21) circumferentially opened, and the second heating module (7) is installed on the bottom cut surface (22). The heating plates of the first heating module (6) and the second heating module (7) are both attached to the cut surface of the heat-conducting base (2).

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