A surface source calibration device for infrared measurement and infrared measurement equipment

Abstract

The present invention discloses a surface source calibration device and infrared measurement equipment for infrared measurement, comprising: a plurality of flat water tanks, each having a heat sink made of a high-emissivity material attached to its outer surface facing the infrared measurement equipment; an inlet water tank containing a first electric heater, a first water supply pump, and a first temperature sensor electrically connected to the first electric heater and the first water supply pump. When the first temperature sensor detects that the water temperature in the inlet water tank has been heated to a first temperature by the first electric heater, the first water supply pump is activated to supply water to each flat water tank; and a return water tank containing a second electric heater, a second water supply pump, and a second temperature sensor electrically connected to the second electric heater and the second water supply pump. When the second temperature sensor detects that the water temperature in the return water tank has been heated to the first temperature by the second electric heater, the second water supply pump is activated to supply water to the inlet water tank. This ensures uniform radiation temperature and allows adjustment of the surface source calibration size.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, in particular to a surface source calibration device for infrared measurement and infrared measurement equipment. Background Art

[0002] When measuring marine vessels using calibrated infrared radiation measurement equipment, users have varying requirements for the radiation temperature range and aperture size of the surface blackbody radiation source calibration device, depending on the measurement target. Consequently, there are no standard surface blackbody radiation sources available on the market. Users are forced to develop custom surface blackbody radiation sources based on their desired radiation temperature range, aperture size, and other technical specifications. Existing surface blackbody radiation sources on the market generally use heating devices such as electric heating films and electric heaters to control the radiation temperature of the surface blackbody radiation source's front panel. These panels are typically made of a single piece of stainless steel or aluminum, with dimensions customized to the user's specifications.

[0003] However, when using existing technical solutions to measure infrared radiation of ship targets, there are still the following problems:

[0004] (1) Due to the large size of the ship target, in order to make the field of view of the infrared radiation measuring equipment cover the entire ship, the infrared radiation measurement is generally carried out at a long distance. Similarly, the calibration of the infrared radiation measuring equipment is best carried out in the same environment and at the same distance. The surface source blackbody radiation source on the market uses electric heating to control the temperature of a whole piece of stainless steel plate or aluminum plate, so it is difficult to make it large in scale, because the larger the scale, the more difficult it is to achieve uniform heating of the whole piece of stainless steel plate or aluminum plate. In addition, according to the existing technical solutions, when the scale of the surface source blackbody radiation source is not very large, there are certain differences in the uniformity of its radiation temperature;

[0005] (2) The larger the scale of the existing surface blackbody radiation source, the greater the heat dissipation of its radiation front panel. Combined with the instability of the surrounding environment, it is easy to cause the radiation temperature of the surface blackbody radiation source to fluctuate and the upper limit of the heating temperature to be limited. Summary of the Invention

[0006] In view of the above problems existing in the prior art, an embodiment of the present invention provides a surface source calibration device and an infrared measurement equipment for infrared measurement, which can ensure uniform radiation temperature and adjust the surface source calibration size.

[0007] An embodiment of the present invention provides a surface source calibration device for infrared measurement, comprising:

[0008] Multiple flat water tanks, each of which has a heat spreader made of high emissivity material attached to its outer surface facing the infrared measuring device;

[0009] a water inlet tank, wherein a first electric heater, a first water supply pump, and a first temperature sensor electrically connected to the first electric heater and the first water supply pump are provided, wherein when the first temperature sensor detects that the water temperature in the water in the water inlet tank is heated to a first temperature by the first electric heater, the first water supply pump is activated to supply water to each of the flat water tanks, wherein each of the flat water tanks is connected to a water supply pipe of the first water supply pump via a water inlet provided at the bottom, and each of the flat water tanks is connected to a water inlet pipe of the return water tank via a water outlet provided at the top;

[0010] A return water tank is provided with a second electric heater, a second water supply pump, and a second temperature sensor electrically connected to the second electric heater and the second water supply pump respectively. When the second temperature sensor detects that the temperature of the water in the return water tank is heated to the first temperature by the second electric heater, the second water supply pump is started to supply water to the water inlet tank. The temperature of the water flowing from each flat water tank into the return water tank is a second temperature, which is lower than the first temperature.

[0011] In some embodiments of the present invention, a first thermal insulation layer is attached to the side of each flat water tank that is not attached to the heat spreader.

[0012] In some embodiments of the present invention, the surface source calibration device for infrared measurement further includes:

[0013] The shell is used to fix and package the multiple flat water tanks, the heat sink and the first insulation layer.

[0014] In some embodiments of the present invention, the water outlet pipes connected to the water outlet of each flat water tank form a loop at the same preset height, wherein the preset height is not lower than the height of the water outlet of the flat water tank with the highest water outlet among the multiple flat water tanks.

[0015] In some embodiments of the present invention, the water outlet pipe connected to the water outlet of each flat water tank is connected to the water inlet pipe of the return water tank.

[0016] In some embodiments of the present invention, the water outlet pipe connected to the water outlet of each flat water tank is wrapped with a second insulation layer.

[0017] In some embodiments of the present invention, the surface source calibration device for infrared measurement further includes:

[0018] a controller electrically connected to the first electric heater, the first water supply pump, the first temperature sensor, the second electric heater, the second water supply pump and the second temperature sensor, for controlling the first electric heater to heat the water in the water inlet tank, and controlling the first water supply pump to start water supply when the first temperature sensor detects that the temperature of the water in the water inlet tank reaches a first temperature; and further for controlling the second electric heater to heat the water in the return water tank, and controlling the second water supply pump to start water supply when the second temperature sensor detects that the temperature of the water in the return water tank reaches the first temperature.

[0019] In some embodiments of the present invention, the controller is further configured to control a heating output power of the second electric heater based on the second temperature.

[0020] In some embodiments of the present invention, the water supply pipe and the water inlet pipe are both wrapped with a third insulation layer.

[0021] An embodiment of the present invention further provides an infrared measurement device, comprising:

[0022] The surface source calibration device for infrared measurement as described above.

[0023] Compared with the prior art, the beneficial effects of the surface source calibration device and infrared measuring equipment for infrared measurement provided by the embodiments of the present invention are: it heats the water in the water inlet tank through the first electric heater in the water inlet tank, and when heated to a first temperature, the water is supplied to multiple flat water tanks through the first water supply pump. At the same time, by attaching a heat spreader made of high emissivity material to the outer surface of each flat water tank facing the infrared measuring equipment, the above-mentioned surface source calibration device for infrared measurement has a higher thermal conductivity (two orders of magnitude higher than the thermal conductivity system of the radiation layer of the traditional calibration device, such as the aluminum radiation layer), and has a larger surface source calibration size. The surface source calibration size can also be adjusted by adjusting the water volume of the flat water tank and the side area of ​​the single deformed water tank on the side facing the infrared measuring equipment. In addition, by using water with a large specific heat capacity for heat transfer, the radiation temperature of the surface source calibration device can be better controlled, and the fluctuation of the radiation temperature of the target surface of the surface source calibration device caused by the instability of the surrounding environment can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall structure of a surface source calibration device for infrared measurement according to an embodiment of the present invention;

[0025] Figure 2 A side view of multiple flat water tanks of a surface source calibration device for infrared measurement according to an embodiment of the present invention;

[0026] Figure 3This is a schematic structural diagram of multiple flat water tanks in a surface source calibration device for infrared measurement according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of a vapor chamber of a surface source calibration device for infrared measurement according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the first insulation layer of the surface source calibration device for infrared measurement according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1. Flat water tank; 2. Vapor chamber; 3. Water inlet tank; 31. First electric heater;

[0031] 32. First water supply pump; 33. First temperature sensor; 4. Water supply pipe; 5. Water inlet pipe;

[0032] 6. Return water tank; 61. Second electric heater; 62. Second water supply pump; 63. Second temperature sensor;

[0033] 7. First insulation layer; 8. Shell; 9. Water outlet pipe. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0036] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0037] It should also be understood that although the present application has been described with reference to certain specific examples, those skilled in the art will be able to implement many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0038] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0039] Specific embodiments of the present application will be described below with reference to the accompanying drawings; however, it should be understood that the embodiments described are merely examples of the present application and may be implemented in a variety of ways. Familiar and / or repetitive functions and structures are not described in detail to clarify the true intent based on the user's historical operations and to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details described herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any appropriate detailed structure.

[0040] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," which may all refer to one or more of the same or different embodiments according to the present application.

[0041] The embodiment of the present invention provides a surface source calibration device for infrared measurement, such as Figures 1 to 5 Shown, including:

[0042] A plurality of flat water tanks 1, each of which is provided with a heat spreader 2 made of a high emissivity material on the outer surface facing the infrared measuring device;

[0043] The water inlet tank 3 is provided with a first electric heater 31, a first water supply pump 32, and a first temperature sensor 33 electrically connected to the first electric heater 31 and the first water supply pump 32, respectively. When the first temperature sensor 33 detects that the water temperature in the water in the water inlet tank 3 is heated to a first temperature by the first electric heater 31, the first water supply pump 32 is started to supply water to each of the flat water tanks 1, wherein each of the flat water tanks 1 is connected to the water supply pipe 4 of the first water supply pump 32 via a water inlet provided at the bottom, and each of the flat water tanks 1 is connected to the water inlet pipe 5 of the return water tank 6 via a water outlet provided at the top;

[0044] The return water tank 6 is provided with a second electric heater 61, a second water supply pump 62, and a second temperature sensor 63 electrically connected to the second electric heater 61 and the second water supply pump 62 respectively. When the second temperature sensor 63 detects that the temperature of the water in the return water tank 6 is heated to the first temperature by the second electric heater 61, the second water supply pump 62 is started to supply water to the water inlet tank 3. The temperature of the water flowing from each flat water tank 1 into the return water tank 6 is a second temperature, which is lower than the first temperature.

[0045] It can be seen from the above technical solution that the water in the water inlet tank 3 is heated by the first electric heater 31 in the water inlet tank 3, and when heated to the first temperature, the water is supplied to the multiple flat water tanks 1 through the first water supply pump 32. At the same time, by attaching a heat spreader 2 made of a high-emissivity material to the outer surface of each flat water tank 1 facing the infrared measuring device, the above-mentioned surface source calibration device for infrared measurement has a higher thermal conductivity (two orders of magnitude higher than the thermal conductivity system of the radiation layer of the traditional calibration device, such as the aluminum radiation layer), and has a larger surface source calibration size. The surface source calibration size can also be adjusted by adjusting the water volume of the flat water tank 1 and the side area of ​​the single deformed water tank on the side facing the infrared measuring device. In addition, by using water with a larger specific heat capacity for heat transfer, the radiation temperature of the surface source calibration device can be better controlled, and the fluctuation of the radiation temperature of the target surface of the surface source calibration device caused by the instability of the surrounding environment can be suppressed. In addition, by heating the water flowing out of the multiple deformable water tanks 1 through the return water tank 6, the initial temperature of the water flowing into the water inlet tank 3 can be close to the water temperature used to supply water to the multiple flat water tanks 1, thereby ensuring the supply of hot water to the multiple flat water tanks 1 and maintaining the radiation temperature of the entire device.

[0046] In order to better maintain the water temperature in each flat water tank 1, in some embodiments of the present invention, a first insulation layer 7 is attached to the side of each flat water tank 1 where the heat spreader 2 is not attached.

[0047] In order to better fix the multiple flat water tanks 1, in some embodiments of the present invention, the surface source calibration device for infrared measurement also includes: a shell 8, which is used to fix and package the multiple flat water tanks 1, the heat spreader 2 and the first insulation layer 7, thereby ensuring the overall stability and firmness of the device.

[0048] In order to ensure that each deformable water tank can be filled with water supplied by the first water supply pump 32, in some embodiments of the present invention, the water outlet pipe 9 connected to the water outlet of each flat water tank 1 forms a loop at the same preset height, wherein the preset height is not lower than the height of the water outlet of the flat water tank 1 with the highest water outlet among the multiple flat water tanks 1.

[0049] Furthermore, the water outlet pipe 9 connected to the water outlet of each flat water tank 1 is connected to the water inlet pipe 5 of the return water tank 6, so that the water in each flat water tank 1 eventually flows into the return water tank 6 through the water inlet pipe 5 of the return water tank 6.

[0050] At the same time, in order to ensure that the temperature of the water flowing out of the water outlet of each flat water tank 1 does not drop too much, in some embodiments of the present invention, the water outlet pipe 9 connected to the water outlet of each flat water tank 1 is wrapped with a second insulation layer.

[0051] In order to better control the temperature of the water in the water inlet tank 3 and the return water tank 6, in some embodiments of the present invention, the surface source calibration device for infrared measurement further includes: a controller, which is electrically connected to the first electric heater 31, the first water supply pump 32, the first temperature sensor 33, the second electric heater 61, the second water supply pump 62 and the second temperature sensor 63, and is used to control the first electric heater 31 to heat the water in the water inlet tank 3, and when the first temperature sensor 33 detects that the temperature of the water in the water inlet tank 3 reaches the first temperature, control the first water supply pump 32 to start water supply; the controller is also used to control the second electric heater 61 to heat the water in the return water tank 6, and when the second temperature sensor 63 detects that the temperature of the water in the return water tank 6 reaches the first temperature, control the second water supply pump 62 to start water supply.

[0052] In order to save the power consumption of the above-mentioned surface source calibration device for infrared measurement, in some embodiments of the present invention, the controller is also used to control the heating output power of the second electric heater 61 based on the second temperature. That is, if the second temperature is not much different from the first temperature, such as the first temperature is 70 degrees and the second temperature is 65 degrees, then the output power of the second electric heater 61 can be lowered at this time. If the first temperature is 70 and the second temperature is 40, the difference is 30 degrees, and the temperature difference is large, at this time, the output power of the second electric heater 61 can be increased to heat the water in the return water tank 6 as soon as possible.

[0053] Similarly, in order to ensure that the temperature of water does not drop significantly when being transmitted in the pipeline, in some embodiments of the present invention, the water supply pipe 4 and the water inlet pipe 5 are both wrapped with a third insulation layer.

[0054] An embodiment of the present invention further provides an infrared measurement device, comprising: a surface source calibration device for infrared measurement as described above, which has all the beneficial effects of the surface source calibration device. A first electric heater 31 in a water inlet tank 3 heats water in the water inlet tank 3. When heated to a first temperature, the water is supplied to a plurality of flat water tanks 1 by a first water supply pump 32. Simultaneously, by attaching a heat spreader 2 made of a high-emissivity material to the outer surface of each flat water tank 1 facing the infrared measurement device, the surface source calibration device for infrared measurement has a higher thermal conductivity (two orders of magnitude higher than the thermal conductivity of the radiation layer of a conventional calibration device, such as an aluminum radiation layer) and a larger surface source calibration size. The surface source calibration size can also be adjusted by adjusting the amount of water in the flat water tanks 1 and the side area of ​​each deformable water tank on the side facing the infrared measurement device. Furthermore, by using water with a large specific heat capacity for heat transfer, the radiation temperature of the surface source calibration device can be effectively controlled, and fluctuations in the radiation temperature of the target surface of the surface source calibration device caused by an unstable surrounding environment can be suppressed.

[0055] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A surface source calibration device for infrared measurement, characterized in that: include: Multiple flat water tanks, each of which is equipped with a heat spreader made of high-emissivity material on the outer surface facing the infrared measurement device. The area source calibration size can be adjusted by adjusting the water volume of the flat water tank and the side area of ​​a single deformable water tank facing the infrared measurement device. a water inlet tank, wherein a first electric heater, a first water supply pump, and a first temperature sensor electrically connected to the first electric heater and the first water supply pump are provided, wherein when the first temperature sensor detects that the water temperature in the water inlet tank is heated to a first temperature by the first electric heater, the first water supply pump is activated to supply water to each of the flat water tanks, wherein each of the flat water tanks is connected to a water supply pipe of the first water supply pump via a water inlet provided at the bottom, and each of the flat water tanks is connected to a water inlet pipe of a return water tank via a water outlet provided at the top; A return water tank is provided with a second electric heater, a second water supply pump, and a second temperature sensor electrically connected to the second electric heater and the second water supply pump respectively. When the second temperature sensor detects that the temperature of the water in the return water tank is heated to the first temperature by the second electric heater, the second water supply pump is started to supply water to the water inlet tank. The temperature of the water flowing from each flat water tank into the return water tank is a second temperature, which is lower than the first temperature.

2. The surface source calibration device for infrared measurement according to claim 1, characterized in that: A first thermal insulation layer is attached to the side of each flat water tank that is not attached to the heat spreader.

3. The surface source calibration device for infrared measurement according to claim 2, characterized in that: Also includes: The shell is used to fix and package the multiple flat water tanks, the heat sink and the first insulation layer.

4. The surface source calibration device for infrared measurement according to claim 1, characterized in that: The water outlet pipes connected to the water outlet of each flat water tank form a loop at the same preset height, wherein the preset height is not lower than the height of the water outlet of the flat water tank with the highest water outlet among the multiple flat water tanks.

5. The surface source calibration device for infrared measurement according to claim 1, characterized in that: The water outlet pipe connected to the water outlet of each flat water tank is communicated with the water inlet pipe of the return water tank.

6. The surface source calibration device for infrared measurement according to claim 5, characterized in that: The water outlet pipe connected to the water outlet of each flat water tank is wrapped with a second thermal insulation layer.

7. The surface source calibration device for infrared measurement according to claim 1, characterized in that: Also includes: a controller electrically connected to the first electric heater, the first water supply pump, the first temperature sensor, the second electric heater, the second water supply pump and the second temperature sensor, for controlling the first electric heater to heat the water in the water inlet tank, and controlling the first water supply pump to start water supply when the first temperature sensor detects that the temperature of the water in the water inlet tank reaches a first temperature; and further for controlling the second electric heater to heat the water in the return water tank, and controlling the second water supply pump to start water supply when the second temperature sensor detects that the temperature of the water in the return water tank reaches the first temperature.

8. The surface source calibration device for infrared measurement according to claim 7, characterized in that: The controller is further configured to control a heating output power of the second electric heater based on the second temperature.

9. The surface source calibration device for infrared measurement according to claim 1, characterized in that: The water supply pipe and the water inlet pipe are both wrapped with a third insulation layer.

10. An infrared measuring device, characterized in that: include: A surface source calibration device for infrared measurement according to any one of claims 1 to 9.

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