CN111141393B - Black body radiation device for simulating meteorological environment - Google Patents
Black body radiation device for simulating meteorological environment Download PDFInfo
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The invention discloses a blackbody radiation device for simulating a meteorological environment. Wherein, the outer surface of the black body is arranged in a cambered surface; the heat bearing unit is arranged outside the black body in a manner of covering a shell, and heat conducting liquid flows through the heat bearing unit so as to conduct basic heat to one side of the black body; the temperature control units are arranged between the black body and the heat bearing unit, one end of any temperature control unit is connected with the heat bearing unit and receives the basic heat at the side of the heat bearing unit, and the other end of the temperature control unit is connected with the black body and outputs the temperature control heat to one side of the black body through the temperature control action of the temperature control unit; the temperature detection unit is clamped between the temperature control unit and the black body and is connected with the temperature control unit, and the temperature detection unit is used for detecting temperature control heat. The controllability of temperature regulation is ensured, so that the method is effectively suitable for performance evaluation and calibration of long-wave radiation sensors, thermal imaging atmospheric radiation sensors and the like.
Description
Technical Field
The invention relates to the technical field of meteorological environment simulation, in particular to a blackbody radiation device for simulating a meteorological environment.
Background
Atmospheric long-wave radiation is one of important components in earth radiation balance, and the observation of atmospheric radiation change by using a long-wave radiation sensor is important meteorological radiation observation activity; the design and maintenance of the blackbody radiation device with good temperature control uniformity and stability are one of the main means for ensuring the consistency and traceability of atmospheric long-wave radiation observation data. The research and test of the thermal imaging atmospheric radiation sensor require that the blackbody device can simulate the layering condition of the sky temperature and the temperature characteristics of different clouds so as to investigate key performance parameters of the sensor, such as dynamic range, response time, image resolution, thermal sensitivity and the like.
There are two main types of blackbody radiation devices currently used to simulate atmospheric long-wave radiation:
firstly, a blackbody radiation device with a spherical structure is adopted, the low-temperature balance simulation of the atmospheric radiation state is realized by utilizing a fluid medium, meanwhile, an automatic lifting platform and a dry gas purging device are adopted to realize the condensation prevention function, in addition, at least a plurality of PRT temperature sensors are used on the surface of a sphere to respectively measure the temperatures of the top point and the middle point of an upper hemisphere to represent the blackbody, and further the simulation of the atmospheric long-wave radiation is realized; however, when the meteorological environment is simulated by adopting the above method, due to the blackbody with the spherical sealing structure, when the blackbody is swept by the lifting platform and the outside air, a uniform temperature field cannot be obtained on all spherical surfaces, for example, when the blackbody is actually used, the temperature uniformity of the hemispherical surface on one side can only be +/-1 ℃ to +/-2 ℃.
Secondly, an arc-shaped open type surface source black body device is adopted, and the surface temperature is controlled at constant temperature on the arc-shaped open type surface source body through a heating film. When the structure is adopted to simulate the meteorological environment, the temperature of the blackbody structure needs to be controlled to be higher than the temperature of the external environment due to the open structural design, so that the simulated meteorological environment and the real meteorological environment are prone to deviation.
Therefore, any type of blackbody radiation device cannot meet the requirement of an operator for simulating a real meteorological environment, such as influence on radiation caused by random cloud change or temperature or atmospheric environment along with zenith angle change, and the like, and cannot really meet thermal imaging type atmospheric radiation tests or scientific research.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is that none of the blackbody radiation devices in the prior art can meet the requirement of an operator for simulating a real meteorological environment, such as influence on radiation caused by random cloud transformation or variation of temperature or atmospheric environment with zenith angle, and the like, and cannot really realize atmospheric radiation test or scientific research.
To this end, the invention provides a blackbody radiator for simulating a meteorological environment, comprising:
the outer surface of the black body is arranged in a cambered surface manner;
the heat bearing unit is covered on the outer side of the black body in a shell shape, and heat conducting liquid flows through the heat bearing unit so as to conduct basic heat to one side of the black body;
the temperature control units are arranged between the black body and the heat bearing unit, one end of any one temperature control unit is connected with the heat bearing unit and receives the basic heat on the side of the heat bearing unit, the other end of the temperature control unit is connected with the black body, and the temperature control unit outputs temperature control heat to one side of the black body through temperature control action of the temperature control unit;
the temperature detecting unit is arranged between the temperature control unit and the black body in a clamping mode and connected with the temperature control unit, and the temperature detecting unit is used for detecting the temperature control heat.
Optionally, in the blackbody radiator for simulating a meteorological environment, the temperature detecting unit includes:
the detection body is provided with an installation part connected with one end of the temperature control unit and at least three supporting parts protruding towards one side of the black body, and the supporting parts are fixedly arranged with the black body through a connecting structure;
and the detector is arranged in the detection body and used for detecting the temperature control heat.
Optionally, foretell black body radiation device for simulating meteorological environment, connection structure is including setting up this internal first magnetism of black body is inhaled and is set up and be in detect the second magnetism of body one side and inhale the piece, first magnetism inhale the piece with the second magnetism is inhaled the piece actuation and is fixed.
Optionally, in the blackbody radiator for simulating a meteorological environment, the adjacent support portions are in an arc surface structure; the second magnetic part is arranged in the cambered surface structure.
Optionally, in the blackbody radiation device for simulating a meteorological environment, the temperature control unit is a semiconductor refrigerator.
Optionally, foretell black body radiation device for simulating meteorological environment, the black body has a plurality of cambered surface lamellar body structures, and is adjacent the edge concatenation of cambered surface body is fixed.
Optionally, foretell black body radiation device for simulating meteorological environment still include with the air guide intercommunication unit that black body intercommunication set up, air guide intercommunication unit includes:
a gas exchanger;
and the communication port is in sealed communication with the inner cavity of the black body and the gas exchanger.
Optionally, the blackbody radiation device for simulating a meteorological environment further includes a long-wave detection unit disposed in the sealed inner cavity of the blackbody body.
Optionally, the blackbody radiation device for simulating a meteorological environment further includes an installation limiting unit: the installation is spacing to include:
a frame body disposed on an outer periphery of the heat receiving unit;
the limiting assembly comprises a plurality of limiting pieces; the limiting part is installed on the frame body, and one end of the limiting part is fixedly connected with the heat bearing unit in an abutting mode.
Optionally, foretell black body radiation device for simulating meteorological environment still includes the unit that keeps warm, the unit lid that keeps warm is established the heat is born the unit and is kept away from one side of black body unit.
The technical scheme provided by the invention has the following advantages:
1. the invention provides a blackbody radiation device for simulating a meteorological environment. Wherein, the outer surface of the black body is arranged in a cambered surface; the heat bearing unit is arranged outside the black body in a manner of covering a shell, and heat conducting liquid flows through the heat bearing unit so as to conduct basic heat to one side of the black body; the temperature control units are arranged between the black body and the heat bearing unit, one end of any one temperature control unit is connected with the heat bearing unit and receives the basic heat on the side of the heat bearing unit, the other end of the temperature control unit is connected with the black body, and the temperature control unit outputs temperature control heat to one side of the black body through the temperature control action of the temperature control unit; the temperature detecting unit is arranged between the temperature control unit and the black body in a clamping mode and connected with the temperature control unit, and the temperature detecting unit is used for detecting the temperature control heat.
According to the blackbody radiation device with the structure, the surface of the blackbody is arranged in an arc surface, so that the arc surface shape of the celestial body is processed, the temperature detection unit is arranged on one side close to the blackbody body for simulation, and the simulation accuracy is further improved; the temperature control unit is arranged on the heat bearing unit and is used for controllably regulating the temperature, for example, the temperature control heat is set temperature difference based on basic heat, and further the temperature is determined, therefore, the received temperature control heat on one side of the black body can be effectively controlled, in addition, the temperature control regulation belongs to secondary regulation, so that the temperature regulation controllable range on one side of the black body is larger, the environment perception high efficiency and high precision on one side of the black body are ensured, and the simulation of the atmospheric long-wave radiation distribution mode under different real environments based on specific use requirements is facilitated; for example, the temperature control unit can be used for simulating different actual atmospheric environment temperatures according to different zenith angles; simulating different atmospheric radiation received by the earth surface in different cloud shape change forms; thereby ensuring the controllability of temperature regulation, and effectively adapting to the performance evaluation and calibration of long-wave radiation sensors, thermal imaging atmospheric radiation sensors and the like.
2. The invention provides a blackbody radiation device for simulating meteorological environment, wherein a temperature detection unit comprises: the detection body is provided with an installation part connected with one end of the temperature control unit and at least three supporting parts protruding towards one side of the black body, and the supporting parts are fixedly arranged with the black body through a connecting structure; and the detector is arranged in the detection body and used for detecting the temperature control heat.
The black body radiation device of this structure, the installation department is guaranteed to be installed accuse temperature unit, and the supporting part supports on the black body, and the detector detects the accuse temperature heat of accuse temperature unit one side output, and then realizes effectively controlling the temperature to black body radiation device.
3. The invention provides a blackbody radiation device for simulating meteorological environment, which comprises a first magnetic attraction piece arranged in a blackbody body and a second magnetic attraction piece arranged on one side of a detection body, wherein the first magnetic attraction piece and the second magnetic attraction piece are attracted and fixed.
The black body radiation device of this structure inhales the cooperation setting of piece through first magnetism and second magnetism, realizes the zero clearance between temperature detecting element and the black body and is connected, has further increased heat conduction efficiency, has reduced the complexity of installation regulation.
4. According to the blackbody radiation device for simulating the meteorological environment, the adjacent supporting parts are in an arc surface structure; the second magnetic part is arranged in the cambered surface structure.
Because in the temperature conduction process, the temperature conduction of edge is usually faster and not the temperature conduction of edge is slower, consequently, utilize the cambered surface structure owing to in the conduction temperature process, the supporting part is longer characteristics with the installation department distance, guarantees to detect the whole heat conduction equilibrium of body, improves the detector in the temperature detecting element and detects the accuracy of temperature.
5. The temperature control unit is a semiconductor refrigerator. The electronic refrigeration device based on the Seebeck effect uses a special controller to be matched with the detector at the cold end, so that the constant controlled end is at a preset temperature, and the electronic refrigeration device has the characteristics of rapid temperature change and accurate temperature control. The working principle of the semiconductor refrigerator is based on the control of temperature difference of the hot end, so that the temperature of the cold end of the semiconductor refrigerator can be detected to an ultra-low temperature region. Compared with the existing spherical cavity type black body radiation device, the semiconductor refrigerator has the characteristics of high efficiency and high precision; the array semiconductor cooler and the detector are arranged, so that the temperature control uniformity of the hemispherical black body surface source structure is greatly improved, and the temperature distribution diversity of the simulation representation long-wave radiation is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a blackbody radiator provided in embodiment 1;
fig. 2 is a partial structural view of the blackbody radiator provided in embodiment 1;
FIG. 3 is a schematic structural view of a heat sink unit provided in embodiment 1;
fig. 4 is a schematic diagram illustrating a TEC controller node composition in a CAN bus in embodiment 1;
fig. 5 is a block diagram of a CAN bus work flow provided in embodiment 1;
description of reference numerals:
1-black body;
2-a heat bearing unit; 21-heat conducting liquid inlet; 22-a heat transfer liquid outlet; 23-threading through hole;
3-temperature control unit;
41-detection body; 411-a mounting portion; 412-a support; 42-a detector;
51-a first magnetically attractive element; 52-a second magnetic element;
61-gas guide inlet; 62-an air guide outlet;
71-a frame body; 72-a first stop; 73-a second limit;
8-a heat preservation unit;
9-a support plate;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a blackbody radiator for simulating meteorological environment, as shown in fig. 1 and 2, including: the blackbody body comprises a blackbody body 1, a heat bearing unit 2, a plurality of temperature control units 3 and a temperature detection unit. Wherein, the outer surface of the black body 1 is arranged in a cambered surface; the heat bearing unit 2 is covered outside the black body 1 in a shell shape, and heat conducting liquid flows through the heat bearing unit 2 to conduct basic heat to one side of the black body 1; the temperature control unit 3 is arranged between the black body and the heat bearing unit 2, one end of any temperature control unit 3 is connected with the heat bearing unit 2 and receives the basic heat at the side of the heat bearing unit 2, the other end of the temperature control unit 3 is connected with the black body 1, and the temperature control heat is output to one side of the black body 1 through the temperature control action of the temperature control unit 3; the temperature detecting unit is clamped between the temperature control unit 3 and the black body 1 and is connected with the temperature control unit 3, and the temperature detecting unit is used for detecting temperature control heat.
In the embodiment, the black body 1 is made of aluminum as a substrate, and the inner side of the black body is uniformly coated with high-emissivity black paint. The black body 1 is arranged in a hemispherical structure; the black body 1 is provided with a plurality of cambered surface sheet structures, and the edges of adjacent cambered surface bodies are spliced and fixed. For example, the black body 1 is formed by splicing two quarter spherical surfaces. Of course, in other alternative embodiments, the section angle of the blackbody body 1 along the spherical center thereof is 150 degrees. The blackbody body 1 designed by a micro-arc is used under the condition that the sensor field of view is full, namely 150 degrees or 180 degrees; compared with a spherical cavity type black body device, the temperature uniformity can be more easily obtained, and the temperature uniformity can reach +/-0.5 ℃ within 90 percent of the visual field.
The heat sink is a curved surface structure covered on the surface of the black body, for example, in this embodiment, the spherical surface of the spherical surface structure is provided with a plurality of through holes 23 for passing through the temperature control unit 3 and the connecting wires of the detector 42 (mentioned below) of the temperature detection unit. For example, the heat bearing unit 2 is provided with a heat conducting liquid inlet 21 and a heat conducting liquid outlet 22, the heat conducting liquid flows in from the heat conducting liquid inlet 21 and flows out from the heat conducting liquid outlet 22, the heat bearing flows silicone oil, the condensation point of the silicone oil is generally less than-50 ℃ and even higher than-70 ℃, and the heat bearing unit is suitable for long-term storage at low temperature; the fluidity of the heat conduction oil is ensured, and the method is suitable for simulating the primary refrigeration in a low-temperature environment.
In the blackbody radiator provided in this embodiment, the temperature control unit 3 is a semiconductor Cooler (TEC). The electronic refrigeration device based on the Seebeck effect uses a special controller to match the arrangement of the detector 42 at the cold end, so that the constant controlled end is at a preset temperature, and the electronic refrigeration device has the characteristics of quick temperature change and accurate temperature control. The working principle of the semiconductor refrigerator is based on the control of temperature difference of the hot end, so that the temperature of the cold end of the semiconductor refrigerator can be detected to an ultra-low temperature region. Compared with the existing spherical cavity type black body radiation device, the semiconductor refrigerator has the characteristics of high efficiency and high precision; the array semiconductor cooler and the detector 42 are arranged, so that the temperature control uniformity of the surface source structure of the hemispherical black body 1 is greatly improved, and the temperature distribution diversity of the simulation representation long-wave radiation is expanded.
In this embodiment, the temperature detection unit includes: a detection body 41 and a detector 42. The detection body 41 is provided with an installation part 411 connected with one end of the temperature control unit 3, and at least three support parts 412 protruding towards one side of the black body 1, and the support parts 412 are fixedly arranged with the black body 1 through a connection structure; the detector 42 is installed in the detection body 41 for detecting temperature-controlled heat. In this embodiment, the adjacent supporting portions 412 are in an arc surface structure; the second magnetic element 52 is arranged in the arc structure. For example, the detector 42 is a high-precision thermistor package, and realizes a temperature measurement function. Because in the temperature conduction process, the temperature at the edge is usually conducted faster but not the temperature at the edge is conducted slower, therefore, the overall heat conduction balance of the detection body 41 is ensured by utilizing the characteristic that the cambered surface structure is longer in distance between the supporting part 412 and the installation part 411 in the temperature conduction process, and the accuracy of the temperature detection of the detector 42 in the temperature detection unit is improved.
The connecting structure includes a first magnetic member 51 disposed in the black body 1 and a second magnetic member 52 disposed on one side of the detecting body 41, wherein the first magnetic member 51 and the second magnetic member 52 are fixed together. For example, the first magnetic attraction piece 51 and the second magnetic attraction piece 52 may be rubidium magnets with opposite magnetism, so as to provide adhesion, and when the heat bearing unit 2 is pressed and connected with the curved surface of the outer surface of the black body 1 through the supporting portion 412, the attraction of the rubidium magnets always provides a fine adjustment gap with relative sliding, so as to ensure the stability of the subsequent pressing and connecting heat bearing unit 2, and further improve the reliability of subsequent detection simulation.
The blackbody radiation device in this embodiment, it still includes the air guide intercommunication unit that sets up with blackbody body 1 intercommunication, and the air guide intercommunication unit includes: and the gas exchanger and the communication port are in sealed communication with the inner cavity of the black body 1 and the gas exchanger. Specifically, the communication port includes an air inlet 61 and an air outlet 62, for example, a vacuum environment or a gas for charging and discharging specified components is introduced into the gas exchanger; the center of the inner cavity of the black body 1 is provided with a long-wave safety unit, in particular a long-wave sensor, and a detection port of the long-wave safety unit extends into the center of the inner cavity and is used for placing an optical detection surface of the long-wave sensor. For example, in the present embodiment, the black body 1 in the form of a hemispherical shell is embedded in the slot of the circular support plate 9 and is sealed and clamped in the slot.
In the embodiment, when 1683 sheets of semiconductor refrigerators with the specification of 10mm by 2mm are distributed according to the arrangement of concentric circles, the cold end of each semiconductor refrigerator is arranged on the hemisphere of the black body 1 with the radius of 200mm, of course, the semiconductor refrigerator and the black body 1 are provided with a projection area of 11mm by 11mm on average, the corresponding solid angle is 0.003025 square degrees, and meanwhile, the high-precision thermistor temperature measurement is embedded in the cold end bearing position, and the total number is 1683; in the working process, the temperature of the heat bearing unit 2 is firstly reduced to-20 ℃, and then the temperature control unit 3 is driven to further control the temperature, so that the temperature of the cold end is constant at a plurality of preset points of temperature ranging from 10 ℃ to-60 ℃.
The blackbody radiation device for simulating meteorological environment that this embodiment provided, it still includes the spacing unit of installation: the installation is spacing to include: a frame body 71, a first stopper 72, and a second stopper 73. Wherein, the frame body 71 is arranged on the periphery of the heat bearing unit 2; the limiting assembly comprises a first limiting member 72 and a second limiting member 73; the stopper is mounted on the frame body 71, and one end of the stopper is fixed in abutment with the heat receiving unit 2. For example, the first limiting member 72 is used to fix the top position of the hemisphere of the black body 1, and the second limiting member 73 is used to fix the edge position of the hemisphere of the black body 1. For example, the first limiting member 72 is a second limiting member 73 which is a limiting screw.
The blackbody radiation device for simulating meteorological environment that this embodiment provided still includes heat preservation unit 8, and heat preservation unit 8 lid is established in the one side that the blackbody unit was kept away from to heat-bearing unit 2. For example, the heat-insulating unit 8 is made of polyurethane sponge, and other heat-insulating materials may be used as long as the heat-bearing unit 2 is insulated.
As shown in fig. 4, a workstation carrying process control, data transceiving and display software is connected with a relay processor of a 37-way CAN sub-bus through a CAN to form a bus, and bus node IDs are allocated through bus address codes to realize unique codes and point-to-point communication of the nodes; each path of sub CAN bus links each node according to the distribution shown in table 1, and uses the polar coordinates (r, theta) projected on the horizontal plane to represent each node sub address, the TEC node takes the polar coordinates (25,0) as the node 1, takes the polar coordinates (0,0) as the node 1683, codes in the counterclockwise direction, and reduces 1 from the zero-crossing layer number.
Table 11683 TEC node sub-bus distribution table
| Sub-bus serial number | TEC node range | Sub-bus serial number | |
| 1 | 1-52 | 20 | 930-972 |
| 2 | 53-104 | 21 | 973-1013 |
| 3 | 105-156 | 22 | 1014-1054 |
| 4 | 157-208 | 23 | 1055-1093 |
| 5 | 209-259 | 24 | 1094-1132 |
| 6 | 260-310 | 25 | 1133-1169 |
| 7 | 311-361 | 26 | 1170-1206 |
| 8 | 362-401 | 27 | 1207-1243 |
| 9 | 402-451 | 28 | 1244-1278 |
| 10 | 452-501 | 29 | 1279-1312 |
| 11 | 502-550 | 30 | 1313-1345 |
| 12 | 551-599 | 31 | 1346-1405 |
| 13 | 600-647 | 32 | 1406-1454 |
| 14 | 648-695 | 33 | 1455-1503 |
| 15 | 696-741 | 34 | 1504-1546 |
| 16 | 742-787 | 35 | 1547-1584 |
| 17 | 798-842 | 36 | 1585-1642 |
| 18 | 843-886 | 37 | 1643-1683 |
| 19 | 887-929 |
Fig. 5 shows the principle of the CAN bus work flow. The workstation runs the temperature control test software, arranges command parameters according to a temperature control program or a user command, and sends an object coding address according to the designation; the repeater works by dividing two paths of CAN transceivers, wherein the bus transceiver is used for communicating with the workstation, analyzing and identifying the address of the sub CAN bus where the repeater is located and transmitting a message backwards; the relay sub CAN bus transceiver is used for communicating with the TEC node of each sub-bus, transmitting bus information and collecting uploading information of the forwarding node; and the CAN transceiver of the TEC controller is used for analyzing the node address continuously transmitted in the analysis, transmitting a command and a parameter value to the central processing unit, and finally realizing the functions of controlling temperature, changing temperature and opening and closing the TEC module.
The workstation mainly comprises a high-performance multi-core processor, a high-performance memory, a high-capacity hard disk, a CAN bus acquisition card, a multi-screen display, a graphic display subsystem, an operating system and temperature control test software. The high-performance multi-core processor performs high-speed processing, transferring and storing operations on various data; the high-performance memory is used as a data cache pool of the processor, so that the concurrent processing capacity of system data is improved, and the rate of data to graphic display is improved; the large-capacity hard disk is used for recording process data, processing data and memorizing software operating parameters by the temperature control software; the CAN bus acquisition card is communicated with an external CAN bus to realize the functions of sending control commands and interacting data between the temperature control test software and the TEC controller node; the multi-screen display and image display subsystem is used for displaying working contents such as a human-computer interaction interface, process data, control console and control parameters, test data, data graphs and the like of the temperature control test software; the operating system is used for supporting the operation of the temperature control test software and realizing the human-computer interaction function; the temperature control test software is used for a user to execute a program, controls the temperature of each node of the array type hemispherical black body through the CAN communication acquisition card, the relay processor and the TEC controller, receives the data of the instrument to be tested, completes the test process according to the user instruction and the test flow, and records, displays, stores and outputs the final result.
The relay processor consists of an embedded control processor, two CAN bus transceivers and a Flash memory. One path of the two CAN bus transceivers is connected with a CAN bus, and the other path of the two CAN bus transceivers is connected with a sub CAN bus; the embedded control processor is used for receiving CAN bus data stream, retrieving the address of the sub-bus where the data stream is located, transmitting the data stream to the sub-bus if the matching is successful, and simultaneously collecting feedback data of the sub-bus and transmitting the feedback data to the bus; the Flash memory is used for processing the functions of caching, stack-out and stack-in of the multi-node concurrent data streams of the sub-bus and power-down memory of process data.
The TEC node consists of a TEC controller, a thermistor and a TEC device. The TEC controller consists of an embedded processor, a CAN bus transceiver, a temperature measuring circuit, an H-bridge drive control circuit and a voltage and current detection circuit, wherein the embedded processor generates a PWM signal to drive the H-bridge drive control circuit, the H-bridge drive control circuit drives the TEC device to work in alternating states of refrigeration and heating, and the voltage and current detection circuit is used for monitoring the state of the drive circuit and returning a numerical value to assist in realizing PID control of temperature; the thermistor is positioned at the temperature detection end to obtain the cold end temperature of the TEC device, the temperature measurement circuit measures the resistance value of the thermistor and transmits the resistance value to the embedded processor, the embedded processor converts the electric signal into a temperature signal, the PWM signal is adjusted according to temperature change, and constant temperature is realized at a specified temperature point in a PID control mode; the CAN bus transceiver is used for the embedded processor to communicate with the sub CAN bus, and finally realizes the uploading of temperature and other data parameters and the downloading of client instructions with the client.
In the black body radiation device provided by the embodiment, the surface of the black body is arranged in an arc surface, so that the arc surface shape of the celestial body is processed, the temperature detection unit is arranged on one side close to the black body 1 for simulation, and the simulation accuracy is further improved; the heat bearing unit 2 is arranged outside the black body 1, so that heat is conducted to one side of the black body 1, the temperature of any position, on the arc surface, of the black body 1 is equal to the temperature of the heat bearing unit 2, the uniformity of the temperature is ensured, the temperature control unit 3 arranged on the heat bearing unit 2 can perform controllable adjustment through the temperature, for example, the temperature control heat is set to be temperature difference based on basic heat, and then the determined temperature is determined, and therefore the received temperature control heat on one side of the black body 1 can be effectively controlled, in addition, the temperature control adjustment belongs to two-stage adjustment, so that the controllable range of the temperature adjustment on one side of the black body 1 is larger, the high efficiency and high precision of environment perception on one side of the black body 1 are ensured, and the simulation of the atmospheric long-wave radiation distribution modes under different real environments is facilitated based on specific use; for example, the temperature control unit 3 can respectively simulate different zenith angles and different actual atmospheric environment temperatures; simulating different atmospheric radiation received by the earth surface in different cloud shape change forms; thereby ensuring the controllability of temperature regulation, and effectively adapting to the performance evaluation and calibration of long-wave radiation sensors, thermal imaging atmospheric radiation sensors and the like. It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A black body radiation device for simulating meteorological environment, characterized by comprising
The black body (1) is provided with an outer surface in a cambered surface;
the heat bearing unit (2) is covered on the outer side of the black body (1) in a shell shape, and heat conducting liquid flows in the heat bearing unit (2) so as to conduct basic heat to one side of the black body (1);
the temperature control units (3) are arranged between the black body and the heat bearing unit (2), one end of any one temperature control unit (3) is connected with the heat bearing unit (2) and receives the basic heat on the side of the heat bearing unit (2), the other end of the temperature control unit is connected with the black body (1), and the temperature control unit outputs temperature control heat to one side of the black body (1) through temperature control action of the temperature control unit (3);
the temperature detection unit is clamped between the temperature control unit (3) and the black body (1) and is connected with the temperature control unit (3), and the temperature detection unit is used for detecting the temperature control heat;
and the long wave detection unit is arranged in the sealed inner cavity of the blackbody body (1).
2. A blackbody radiator apparatus for simulating meteorological environments according to claim 1, wherein the temperature detecting unit comprises:
the detection device comprises a detection body (41), wherein the detection body (41) is provided with an installation part (411) connected with one end of the temperature control unit (3) and at least three supporting parts (412) protruding towards one side of the black body (1), and the supporting parts (412) are fixedly arranged with the black body (1) through a connecting structure;
and a detector (42) installed in the detection body (41) for detecting the temperature-controlled heat.
3. The blackbody radiation device for simulating meteorological environment of claim 2, wherein the connecting structure comprises a first magnetic attraction piece (51) arranged in the blackbody body (1) and a second magnetic attraction piece (52) arranged on one side of the detection body (41), and the first magnetic attraction piece (51) and the second magnetic attraction piece (52) are attracted and fixed.
4. A blackbody radiator for simulating meteorological environments according to claim 3, wherein adjacent support portions (412) are in a circular arc surface structure; the second magnetic part (52) is arranged in the cambered surface structure.
5. A blackbody radiation apparatus for simulating a meteorological environment according to any one of claims 1 to 4,
the temperature control unit (3) is a semiconductor refrigerator.
6. A blackbody radiator for simulating meteorological environment according to claim 5, characterized in that the blackbody body (1) has a plurality of cambered surface sheet structures, and the edges of the adjacent cambered surface bodies are spliced and fixed.
7. A blackbody radiator for simulating meteorological environment according to any one of claims 1-4, further comprising an air guide communication unit in communication with the blackbody body (1), the air guide communication unit comprising:
a gas exchanger;
and the communication port is in sealed communication with the inner cavity of the black body (1) and the gas exchanger.
8. A blackbody radiation apparatus for simulating a meteorological environment according to any one of claims 1 to 4,
still including installing spacing unit: the installation is spacing to include:
a frame body (71) provided on the outer periphery of the heat receiving unit (2);
the limiting assembly comprises a plurality of limiting pieces; the limiting piece is installed on the frame body (71), and one end of the limiting piece is fixedly abutted to the heat bearing unit (2).
9. A blackbody radiation apparatus for simulating a meteorological environment according to any one of claims 1 to 3,
still include heat preservation unit (8), heat preservation unit (8) lid is established heat bearing unit (2) is kept away from one side of blackbody unit.
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