Background heat flow measurement method based on solar simulator heat balance test

Abstract

The invention provides a background heat flow measurement method based on a solar simulator heat balance test. The background heat flow measurement method comprises the following steps: entering a first working condition of opening a heat sink and closing a solar simulator; obtaining a heat sink background heat flow; entering a second working condition of starting the heat sink and starting the solar simulator; obtaining a heat sink background heat flow, a temperature rise background heat flow at a light outlet and a temperature rise background heat flow at a reflector, and determining the sum of the three; turning on a heat sink, turning off a solar simulator, turning on a heating sheet on the back surface of the reflector, and adjusting the temperature of the reflector to a third working condition which is consistent with the temperature of the reflector in the second working condition; obtaining a heat sink background heat flow and a reflector temperature rise background heat flow under a third working condition, and determining the sum of the two; obtaining a temperature rise background heat flow at the reflector by subtracting the sum of the two from the heat sink background heat flow; and the sum of the three is subtracted from the sum of the two to obtain the temperature rise background heat flow at the light outlet, so that the background heat flow measurement efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solar simulator thermal balance tests, and in particular to a background heat flux measurement method based on a solar simulator thermal balance test. Background Art

[0002] In the thermal balance test of spacecraft, it is required to simulate the heat flux accurately. The use of solar simulators to carry out thermal balance tests on spacecraft is the simulation method that is closest to the real space environment. Especially for deep space spacecraft and spacecraft with complex surface conditions, the thermal test method based on solar simulators is simple and the effect is real. In the actual cosmic environment, the background is approximately a 3K black body, and the thermal radiation to the spacecraft can be ignored. Therefore, except for solar radiation, deep space spacecraft will not be affected by additional radiation heat flux.

[0003] In the ground simulation environment, the space environment simulator is used to simulate the cosmic environment, and the solar simulator is used to simulate the actual solar radiation heat flow. The heat (light) source of the solar simulator passes through the integrator and then irradiates the light outlet in the space environment simulator onto the reflector, which is then reflected to the test piece by the reflector, thereby simulating the solar radiation heat flow.

[0004] During the simulation, some conditions are quite different from the actual cosmic environment. First, the heat sink of the space environment simulator establishes a 100K cold background, rather than a black body close to 3K, which has an additional thermal radiation effect on the experiment; in addition, there is no heat sink installed at the light outlet, and there will be a significant temperature rise here when the solar simulator is irradiated, which is an additional heat source for the specimen; finally, the reflective surface of the solar simulator will increase in temperature due to the irradiation, in addition to reflecting the simulated solar radiation heat flux, it will also cause additional infrared radiation, which is also an additional heat source for the specimen. These additional thermal radiations are called background heat fluxes.

[0005] Therefore, how to accurately measure the specific value of the background heat flux has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] The invention provides a background heat flux measurement method based on a solar simulator thermal balance test, which is used to solve the defect in the prior art that various background heat fluxes cannot be accurately measured in specific numerical values.

[0007] In a first aspect, the present invention provides a background heat flux measurement method based on a solar simulator thermal balance test, comprising:

[0008] Controlling the conditions of the solar simulator thermal balance test to enter a first operating condition in which the heat sink is turned on and the solar simulator is turned off;

[0009] Obtaining a heat sink background heat flux caused by not providing a heat sink at the light outlet and the reflector under the first working condition;

[0010] Controlling the conditions of the solar simulator thermal balance test to enter the second operating condition of turning on the heat sink and the solar simulator;

[0011] Under the second working condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtain the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of the temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of the temperature rise at the reflector due to the irradiation of the solar simulator, and determine the sum of the three;

[0012] Controlling the conditions of the solar simulator thermal balance test to enter a third operating condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on, and the temperature of the reflector is adjusted to be consistent with the temperature of the reflector in the second operating condition;

[0013] Obtaining the background heat flux of the heat sink caused by not providing a heat sink at the light outlet and the reflector under the third working condition, and the background heat flux of the temperature rise of the reflector caused by temperature control of the reflector, and determining the sum of the two;

[0014] The temperature rise background heat flux at the reflector is obtained by subtracting the sum of the two from the background heat flux of the heat sink;

[0015] The temperature rise background heat flux at the light outlet is obtained by subtracting the sum of the three from the sum of the two.

[0016] A background heat flux measurement method based on a solar simulator thermal balance test according to the present invention also includes:

[0017] The test piece is fixed on the motion simulator, and a cold plate with liquid nitrogen is installed between the motion simulator and the test piece, wherein the state of the cold plate is consistent with the heat sink of the motion simulator, so as to eliminate the background heat flow generated by the motor power consumption of the motion simulator;

[0018] By installing a heat flow meter on each surface of the test piece, the heat flow reaching each surface is measured;

[0019] Temperature measuring devices are installed at the light outlet, heat sink and reflector of the solar simulator thermal balance test to determine the temperature change at each position, and a heating plate is attached to the back of the reflector;

[0020] Complete the condition preparation for the first operating condition, the second operating condition and the third operating condition.

[0021] According to a background heat flux measurement method based on a solar simulator thermal balance test provided by the present invention, the heat flux meter includes a black sheet type heat flux meter and a square fort type heat flux meter;

[0022] The black sheet heat flow meter and the square fortress heat flow meter have different absorption rates for the visible spectrum and the infrared spectrum. The solar radiation heat flux and the background heat flux in the current state are obtained through the surface temperature of the black sheet heat flow meter and the square fortress heat flow meter.

[0023] According to a background heat flux measurement method based on a solar simulator thermal balance test provided by the present invention, after obtaining the temperature rise background heat flux at the light outlet, the method further includes:

[0024] Determine test requirements, and determine the sensitive direction of the heat flow meter based on the test requirements;

[0025] determining an angular coefficient for each of said sensitive directions;

[0026] Based on the angle coefficient, the test process under the conditions of the first working condition, the second working condition and the third working condition is repeated.

[0027] According to a background heat flux measurement method based on a solar simulator thermal balance test provided by the present invention, the heat sink background heat flux, the temperature rise background heat flux at the light outlet and the temperature rise background heat flux at the reflector under the first working condition, the second working condition and the third working condition are all measured by a heat flux meter;

[0028] The heat flow calculation formula of the heat flow meter is:

[0029] q=εσT 4 ;

[0030] Where Q is the heat flux, ε is the surface emissivity of the heat flux meter, and σ is the Steffen-Boltzmann constant, 5.67e-8 W / m 2 / K 4 , T is the surface temperature of the heat flux meter.

[0031] According to a background heat flow measurement method based on a solar simulator thermal balance test provided by the present invention, the heat flow includes heat flows corresponding to the visible spectrum segment and the infrared spectrum segment, as follows:

[0032] Q = α1q1 + α2q2;

[0033] Among them, α1 is the absorptivity of solar radiation, α2 is the absorptivity of infrared radiation, Q1 is the heat flow in the visible spectrum, and Q2 is the heat flow in the infrared spectrum.

[0034] According to a background heat flux measurement method based on a solar simulator thermal balance test provided by the present invention, the heat flux meter includes a black sheet heat flux meter and a square fortress heat flux meter, and the heat flux calculation formulas of the black sheet heat flux meter and the square fortress heat flux meter are:

[0035] α 1-1q1+α 2-1 q2=ε1σt 4 ;

[0036] α 1-2 q1+α 2-2 q2=ε2σT 4 ;

[0037] Among them, α 1-1 is the absorption rate of solar radiation corresponding to the black sheet heat flux meter, α 2-1 is the absorption rate of infrared radiation corresponding to the black sheet heat flow meter, α 1-2 is the solar radiation absorption rate corresponding to the square fortress heat flux meter, α 2-2 is the absorptivity of infrared radiation corresponding to the square fortress type heat flow meter, ε1 is the surface emissivity of the black sheet type heat flow meter, and ε2 is the surface emissivity of the square fortress type heat flow meter;

[0038] The heat flow calculation formulas of the black sheet type heat flow meter and the square fort type heat flow meter are combined to obtain the heat flow in the infrared spectrum as the background heat flow.

[0039] A background heat flux measurement method based on a solar simulator thermal balance test according to the present invention also includes:

[0040] Determine a measurement order of the first operating condition, the second operating condition, and the third operating condition.

[0041] In a second aspect, the present invention further provides a background heat flux measurement device based on a solar simulator thermal balance test, comprising:

[0042] The first measurement module is used to control the conditions of the solar simulator thermal balance test to enter the first working condition in which the heat sink is turned on and the solar simulator is turned off; and obtain the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first working condition;

[0043] The second measurement module is used to control the conditions of the solar simulator thermal balance test to enter the second working condition of turning on the heat sink and turning on the solar simulator; when the temperature at the light outlet, the heat sink and the reflector is stable under the second working condition, the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of the temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of the temperature rise at the reflector due to the irradiation of the solar simulator are obtained, and the sum of the three is determined;

[0044] The third measurement module is used to control the conditions of the solar simulator thermal balance test to enter the third working condition of turning on the heat sink, turning off the solar simulator, turning on the heating plate on the back of the reflector, and adjusting the temperature of the reflector to the third working condition consistent with the reflector temperature of the second working condition; obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the third working condition, and the reflector temperature rise background heat flux caused by temperature control of the reflector, and determining the sum of the two;

[0045] The determination module is used to obtain the temperature rise background heat flux at the reflector by subtracting the sum of the two from the background heat flux of the heat sink; and to obtain the temperature rise background heat flux at the light outlet by subtracting the sum of the three from the sum of the two.

[0046] In a third aspect, the present invention also provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the background heat flux measurement method based on the solar simulator thermal balance test as described above is implemented.

[0047] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described background heat flux measurement methods based on a solar simulator thermal balance test.

[0048] In a fifth aspect, the present invention further provides a computer program product, comprising a computer program, which, when executed by a processor, implements any of the above-described background heat flux measurement methods based on a solar simulator thermal balance test.

[0049] The background heat flux measurement method based on the solar simulator thermal balance test provided by the present invention comprises: controlling the conditions of the solar simulator thermal balance test to enter a first working condition in which a heat sink is turned on and the solar simulator is turned off; obtaining the heat sink background heat flux caused by the fact that no heat sink is provided at the light outlet and the reflector under the first working condition; controlling the conditions of the solar simulator thermal balance test to enter a second working condition in which the heat sink is turned on and the solar simulator is turned on; in the second working condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtaining the heat sink background heat flux caused by the fact that no heat sink is provided at the light outlet and the reflector, the background heat flux of temperature rise at the light outlet due to irradiation by the solar simulator, and the background heat flux of temperature rise at the reflector due to irradiation by the solar simulator, and determining the sum of the three; controlling the solar simulator thermal balance test to enter a second working condition in which the heat sink is turned on and the solar simulator is turned on; obtaining the background heat flux of the heat sink caused by the fact that no heat sink is provided at the light outlet and the reflector under the second working condition ... The test conditions are entered into a third working condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on, and the temperature of the reflector is adjusted to the temperature of the reflector consistent with that of the second working condition; the background heat flux of the heat sink caused by the absence of a heat sink at the light outlet and the reflector under the third working condition, and the background heat flux of the reflector temperature rise caused by the temperature control of the reflector are obtained, and the sum of the two is determined; the background heat flux of the temperature rise at the reflector is obtained by subtracting the sum of the two from the background heat flux of the heat sink; the background heat flux of the temperature rise at the light outlet is obtained by subtracting the sum of the three from the sum of the two, and the sum of several different background heat fluxes can be measured respectively through different working conditions, and then the values ​​of the three different background heat fluxes can be accurately determined respectively by taking the difference, thereby improving the efficiency of the background heat flux measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 is a flow chart of a background heat flux measurement method based on a solar simulator thermal balance test provided in this embodiment;

[0052] Figure 2 is a schematic diagram of a solar simulator test system provided in this embodiment;

[0053] Figure 3 is a schematic structural diagram of a background heat flux measurement device based on a solar simulator thermal balance test provided in this embodiment;

[0054] Figure 4 It is a schematic diagram of the structure of the electronic device provided in this embodiment. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Figure 1 is a flow chart of a background heat flux measurement method based on a solar simulator thermal balance test provided in this embodiment, Figure 2 Schematic diagram of the solar simulator test system provided in this embodiment.

[0057] like Figure 1 and Figure 2 As shown, a background heat flux measurement method based on a solar simulator thermal balance test provided by an embodiment of the present invention mainly includes the following steps:

[0058] 101. Control the conditions of the solar simulator thermal balance test to enter the first working condition of turning on the heat sink and turning off the solar simulator.

[0059] In a specific implementation, the solar simulator system is as follows Figure 2 The test was carried out in a space environment simulator. A heat sink was placed in the container. The temperature of the heat sink was 100K when liquid nitrogen was passed through it. The xenon light source was evenly collimated by the integrator, irradiated the reflector from the light outlet, and then reflected by the reflector to the surface of the test piece.

[0060] Among them, there are three main sources of background heat flow: infrared radiation caused by the heat sink 100K; infrared radiation caused by the reflector emitting simulated sunlight and its own heat and temperature rise; there is no heat sink at the light outlet, and the temperature is higher than the heat sink's 100K. At the same time, after the equipment is turned on, the non-collimated simulated sunlight causes a temperature rise on the light outlet, so there is also infrared radiation caused by the temperature rise at the light outlet.

[0061] Therefore, in order to accurately measure the specific value of the background heat flux, it is necessary to fix the test piece on the motion simulator, install a cold plate with liquid nitrogen between the motion simulator and the test piece, and the state of the cold plate is consistent with the heat sink of the motion simulator to eliminate the background heat flux generated by the motor power consumption of the motion simulator. By installing heat flux meters on each surface of the test piece, the heat flux reaching each surface is measured. Temperature measuring devices are installed at the light outlet, heat sink and reflector of the solar simulator thermal balance test to determine the temperature changes at each position, and a heating plate is pinned to the back of the reflector. The preparation of the test system is completed, so as to prepare and test the conditions of the first working condition, the second working condition and the third working condition.

[0062] The heat flow meters include black sheet type heat flow meters and square fort type heat flow meters. The black sheet type heat flow meters and square fort type heat flow meters have different absorption rates for the visible spectrum and the infrared spectrum. The solar radiation heat flow size and the background heat flow size in the current state are obtained through the surface temperature of the black sheet type heat flow meters and the square fort type heat flow meters.

[0063] After the test preparation is completed, the measurement can be started. The overall measurement is divided into three working conditions. The division of the three working conditions is mainly based on the three sources of background heat flux. Since the measurement is the overall background heat flux, the comparison of different amounts of heat under the three working conditions can screen out the influence of each background heat flux.

[0064] First, the first working condition is started, that is, the conditions for controlling the thermal balance test of the solar simulator are turned on the heat sink and turned off the solar simulator.

[0065] 102. Obtain a heat sink background heat flux caused by not providing a heat sink at the light outlet and the reflector under a first working condition.

[0066] After starting the first working condition, wait until the temperature of the light outlet, heat sink and reflector is stable, and the heat flux counter value is stable, and then record the infrared radiation heat flux received at this time. At this time, the temperature of the part with heat sink is 100K, and the temperature of the light outlet and reflector is higher than 100K because there is no heat sink. The background heat flux caused by these parts is collectively referred to as the heat sink background heat flux, recorded as Q1.

[0067] 103. Control the conditions of the solar simulator thermal balance test to enter the second working condition of turning on the heat sink and the solar simulator.

[0068] The second working condition is based on the first working condition, the heat sink is kept turned on, and the solar simulator is turned on. Therefore, the background heat flux measured in the second working condition includes Q1 and the background heat flux generated by the irradiation of the solar simulator.

[0069] 104. Under the second working condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtain the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of temperature rise at the reflector due to the irradiation of the solar simulator, and determine the sum of the three.

[0070] After the temperature of the light outlet, heat sink, and reflector are stable, and the heat flux counter value is stable, record the temperature value of each part and the radiant heat flux received. At this time, the temperature of the part with heat sink is still 100K. Since there is no heat sink at the light outlet and reflector, and they are affected by the solar simulator, the temperature is much higher than 100K. Therefore, in addition to Q1 in the first working condition, there is also a background heat flux caused by the temperature rise caused by the solar simulator. The temperature rise background heat flux at the light outlet is Q2, and the temperature rise background heat flux at the reflector is Q3. Through heat flux calculation, the total value of Q1+Q2+Q3 can be obtained.

[0071] 105. Control the conditions of the solar simulator thermal balance test to enter the third working condition of turning on the heat sink, turning off the solar simulator, turning on the heating plate on the back of the reflector, and adjusting the temperature of the reflector to the third working condition consistent with the temperature of the reflector in the second working condition.

[0072] After completing the measurement of the first working condition and the second working condition, the working conditions are adjusted by turning on the heat sink, turning off the solar simulator, turning on the heating plate on the back of the reflector, and adjusting the temperature of the reflector to be consistent with the reflector temperature of the second working condition. At this time, it is in the third working condition. The difference between the third working condition and the second working condition is that there is no irradiation of the solar simulator, so there is no background heat flux Q2 of temperature rise at the light outlet.

[0073] 106. Obtain a heat sink background heat flux caused by not providing a heat sink at the light outlet and the reflector under the third working condition, and a reflector temperature rise background heat flux caused by temperature control of the reflector, and determine the sum of the two.

[0074] After the temperature of the light outlet, heat sink, and reflector are stable, and the heat flux counter value is stable, record the temperature value of each part and the radiant heat flux received. At this time, the temperature of the part with the heat sink is still 100K. Since there is no irradiation from the solar simulator, the temperature at the light outlet is consistent with the first working condition. Since the reflector is temperature controlled, the background heat flux of the temperature rise at the reflector is Q3. The reflector is heated by a heating plate to replace the temperature generated by the solar simulator. Therefore, the background heat flux under the third working condition includes the background heat flux of the heat sink Q1 and the background heat flux of the temperature rise at the reflector Q3. By solving, the sum of Q1 and Q3 can be obtained.

[0075] 107. The background heat flux of temperature rise at the reflector is obtained by subtracting the sum of the two from the background heat flux of the heat sink.

[0076] The background heat flux obtained under the first working condition is the heat sink background heat flux Q1, the background heat flux obtained under the second working condition is the heat sink background heat flux Q1, the temperature rise background heat flux at the light outlet Q2 and the temperature rise background heat flux at the reflector Q3, and the background heat flux obtained under the third working condition is the heat sink background heat flux Q1 and the temperature rise background heat flux Q3 at the reflector.

[0077] Therefore, by subtracting the two background heat fluxes under the third working condition from the one background heat flux under the first working condition, the background heat flux Q3 at the reflector can be obtained.

[0078] 108. The temperature rise background heat flux at the light outlet is obtained by subtracting the sum of the three from the sum of the two.

[0079] In the same way as the above subtraction method, the temperature rise background heat flux at the light outlet can be obtained by subtracting the three background heat fluxes under the second working condition from the two background heat fluxes under the third working condition.

[0080] Thus, the background heat flux Q1 of the heat sink, the background heat flux Q2 of the temperature rise at the light outlet, and the background heat flux Q3 of the temperature rise at the reflector are successfully obtained. In this embodiment, the heat flux measurement is preferably performed in the order of the first working condition, the second working condition, and the third working condition. This order can effectively shorten the measurement time of different working conditions and improve the efficiency of the strategy.

[0081] Among them, no matter under the first working condition, the second working condition or the third working condition, the method of calculating different background heat fluxes is to measure them through a heat flux meter; the calculation formula of the heat flux meter is (1):

[0082] q=εσT 4 (1);

[0083] Where q is the heat flux, ε is the surface emissivity of the heat flux meter, and σ is the Steffen-Boltzmann constant, 5.67e-8 W / m 2 / K 4 , T is the surface temperature of the heat flux meter.

[0084] The heat flow includes the heat flow corresponding to the visible spectrum and the infrared spectrum. The functional relationship between the heat flow and the temperature is related to the surface material parameters of the heat flow meter. The absorption rates of the visible spectrum and the infrared spectrum are different. Therefore, the heat flow reaching the surface of the heat flow meter can be expressed as (2):

[0085] q=α1q1+α2q2 (2);

[0086] Among them, α1 is the absorptivity of solar radiation, α2 is the absorptivity of infrared radiation, q1 is the heat flow in the visible spectrum, and q2 is the heat flow in the infrared spectrum.

[0087] The heat flow meter in this embodiment includes a black sheet type heat flow meter and a square fort type heat flow meter. By combining equations (1) and (2), (3) and (4) are obtained:

[0088] α 1-1 q1+α 2-1 q2=ε1σT 4 (3);

[0089] α 1-2 q1+α2-2 q2=ε2σT 4 (4);

[0090] Among them, α 1-1 is the absorption rate of solar radiation corresponding to the black sheet heat flux meter, α 2-1 is the absorption rate of infrared radiation corresponding to the black sheet heat flow meter, α 1-2 is the solar radiation absorption rate corresponding to the square fortress heat flux meter, α 2-2 is the absorptivity of infrared radiation corresponding to the square fortress type heat flow meter, ε1 is the surface emissivity of the black sheet type heat flow meter, and ε2 is the surface emissivity of the square fortress type heat flow meter;

[0091] The surface temperatures of different heat flow meters can be obtained respectively. At the same time, the absorptivity and surface emissivity of the two heat flow meters in the visible spectrum and infrared spectrum are known. q1 and q2 can be calculated through two equations. The infrared radiation heat flux is the background heat flux.

[0092] Therefore, through the heat flow calculation method, different background heat flows under the first working condition, the second working condition and the third working condition can be accurately calculated respectively.

[0093] Furthermore, based on the above embodiments, after obtaining the temperature rise background heat flux at the light outlet, the present embodiment also includes: determining the test requirements, and determining the sensitive direction of the heat flux meter based on the test requirements; determining the angular coefficient of each sensitive direction; and based on the angular coefficient, repeating the test process under the conditions of the first working condition, the second working condition and the third working condition.

[0094] Specifically, the view factor is the percentage of radiation energy emitted by one surface that falls on another surface. It reflects the geometric shape and position relationship between different objects that radiate each other. Therefore, in order to ensure the accuracy of the measurement results, multiple measurements in different directions are required. The test direction can be determined according to user needs. By determining the test direction by the user and measuring in different directions, the final result can better meet the needs of the user.

[0095] The background heat flux measurement method of the present invention is applied to the test of deep space exploration spacecraft. Since the deep space exploration spacecraft is far away from the earth's orbit and the solar radiation is relatively small compared to the earth's orbit, the proportion of background heat flux increases and the influence is greater. By using this method, the background heat flux is measured in advance, the source of the background heat flux, the size of the background heat flux from each source and the influence are clarified, which provides a good experimental data basis for correcting the thermal model, meets the requirements for verifying the rationality of the satellite thermal design, realizes the accurate measurement of the background heat flux, plays a key role in verifying the thermal design and thermal influence of the product, effectively ensures the smooth implementation of multiple tests, and makes contributions to ensuring the smooth advancement of multiple models.

[0096] Based on the same general inventive concept, the present invention also protects a background heat flux measurement device based on a solar simulator thermal balance test. The background heat flux measurement device based on a solar simulator thermal balance test described below and the background heat flux measurement method based on a solar simulator thermal balance test described above can refer to each other.

[0097] Figure 3 It is a structural schematic diagram of a background heat flux measurement device based on a solar simulator thermal balance test provided in this embodiment.

[0098] like Figure 3 As shown, this embodiment provides a background heat flux measurement device based on a solar simulator thermal balance test, comprising:

[0099] The first measurement module 301 is used to control the conditions of the solar simulator thermal balance test to enter the first working condition in which the heat sink is turned on and the solar simulator is turned off; and obtain the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first working condition;

[0100] The second measurement module 302 is used to control the conditions of the solar simulator thermal balance test to enter the second working condition of turning on the heat sink and turning on the solar simulator; in the second working condition, when the temperature at the light outlet, the heat sink and the reflector is stable, obtain the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of the temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of the temperature rise at the reflector due to the irradiation of the solar simulator, and determine the sum of the three;

[0101] The third measurement module 303 is used to control the conditions of the solar simulator thermal balance test to enter the third working condition of turning on the heat sink, turning off the solar simulator, turning on the heating plate on the back of the reflector, and adjusting the temperature of the reflector to the third working condition consistent with the temperature of the reflector in the second working condition; obtaining the background heat flux of the heat sink caused by the absence of a heat sink at the light outlet and the reflector under the third working condition, and the background heat flux of the reflector temperature rise caused by the temperature control of the reflector, and determining the sum of the two;

[0102] The determination module 304 is used to obtain the temperature rise background heat flux at the reflector by subtracting the sum of the two from the background heat flux of the heat sink; and to obtain the temperature rise background heat flux at the light outlet by subtracting the sum of the three from the sum of the two.

[0103] Figure 4 It is a schematic diagram of the structure of the electronic device provided in this embodiment.

[0104] like Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute a background heat flux measurement method based on a solar simulator thermal balance test, the method comprising: controlling the conditions of the solar simulator thermal balance test to enter a first condition in which the heat sink is turned on and the solar simulator is turned off; obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first condition; controlling the conditions of the solar simulator thermal balance test to enter a second condition in which the heat sink is turned on and the solar simulator is turned on; in the second condition, when the temperature at the light outlet, the heat sink and the reflector is stable, obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector, the temperature rise background heat flux at the light outlet caused by the irradiation of the solar simulator, and the background heat flux of temperature rise at the reflector caused by the irradiation of the solar simulator, and determine the sum of the three; control the conditions of the solar simulator thermal balance test to enter the third working condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on, and the temperature of the reflector is adjusted to the third working condition consistent with the reflector temperature of the second working condition; obtain the heat sink background heat flux caused by the lack of a heat sink at the light outlet and the reflector under the third working condition, and the background heat flux of temperature rise on the reflector caused by temperature control of the reflector, and determine the sum of the two; subtract the sum of the two from the heat sink background heat flux to obtain the background heat flux of temperature rise at the reflector; subtract the sum of the three from the sum of the two to obtain the background heat flux of temperature rise at the light outlet.

[0105] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0106] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the background heat flux measurement method based on the solar simulator thermal balance test provided by the above-mentioned methods, the method including: controlling the conditions of the solar simulator thermal balance test to enter a first operating condition in which the heat sink is turned on and the solar simulator is turned off; obtaining the heat sink background heat flux caused by the fact that no heat sink is set at the light outlet and the reflector under the first operating condition; controlling the conditions of the solar simulator thermal balance test to enter a second operating condition in which the heat sink is turned on and the solar simulator is turned on; in the second operating condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtaining the heat sink background heat flux caused by the fact that no heat sink is set at the light outlet and the reflector The heat sink background heat flux caused by the solar simulator, the temperature rise background heat flux at the light outlet caused by the solar simulator, and the temperature rise background heat flux at the reflector caused by the solar simulator are determined to be the sum of the three; the conditions of the solar simulator thermal balance test are controlled to enter the third working condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on to adjust the temperature of the reflector to the third working condition consistent with the temperature of the reflector in the second working condition; the heat sink background heat flux caused by the lack of a heat sink at the light outlet and the reflector under the third working condition and the temperature rise background heat flux of the reflector caused by temperature control of the reflector are obtained to determine the sum of the two; the temperature rise background heat flux at the reflector is obtained by subtracting the sum of the two from the heat sink background heat flux; the temperature rise background heat flux at the light outlet is obtained by subtracting the sum of the three from the sum of the two.

[0107] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the background heat flux measurement method based on the solar simulator thermal balance test provided by the above-mentioned methods, the method comprising: controlling the conditions of the solar simulator thermal balance test to enter a first operating condition in which the heat sink is turned on and the solar simulator is turned off; obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first operating condition; controlling the conditions of the solar simulator thermal balance test to enter a second operating condition in which the heat sink is turned on and the solar simulator is turned on; in the second operating condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector, and the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector The temperature rise background heat flux at the light outlet caused by the simulator irradiation and the temperature rise background heat flux at the reflector caused by the solar simulator irradiation are determined by the sum of the three; the conditions of the solar simulator thermal balance test are controlled to enter the third working condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on, and the temperature of the reflector is adjusted to the third working condition consistent with the temperature of the reflector in the second working condition; the heat sink background heat flux caused by the lack of a heat sink at the light outlet and the reflector under the third working condition and the reflector background heat flux caused by temperature control of the reflector are obtained, and the sum of the two is determined; the background heat flux at the reflector is obtained by subtracting the sum of the two from the heat sink background heat flux to obtain the background heat flux at the reflector; the background heat flux at the light outlet is obtained by subtracting the sum of the three from the sum of the two.

[0108] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A background heat flux measurement method based on a solar simulator thermal balance test, characterized in that: include: Controlling the conditions of the solar simulator thermal balance test to enter a first operating condition in which the heat sink is turned on and the solar simulator is turned off; Obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first working condition; Controlling the conditions of the solar simulator thermal balance test to enter the second operating condition of turning on the heat sink and the solar simulator; Under the second working condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtain the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of the temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of the temperature rise at the reflector due to the irradiation of the solar simulator, and determine the sum of the three; Controlling the conditions of the solar simulator thermal balance test to enter a third operating condition in which the heat sink is turned on, the solar simulator is turned off, and the heating plate on the back of the reflector is turned on, and the temperature of the reflector is adjusted to be consistent with the temperature of the reflector in the second operating condition; Obtaining the background heat flux of the heat sink caused by not providing a heat sink at the light outlet and the reflector under the third working condition, and the background heat flux of the temperature rise of the reflector caused by temperature control of the reflector, and determining the sum of the two; The temperature rise background heat flux at the reflector is obtained by subtracting the sum of the two from the background heat flux of the heat sink; The temperature rise background heat flux at the light outlet is obtained by subtracting the sum of the three from the sum of the two.

2. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 1 is characterized in that: Also includes: The test piece is fixed on the motion simulator, and a cold plate with liquid nitrogen is installed between the motion simulator and the test piece, wherein the state of the cold plate is consistent with the heat sink of the motion simulator, so as to eliminate the background heat flow generated by the motor power consumption of the motion simulator; By installing a heat flow meter on each surface of the test piece, the heat flow reaching each surface is measured; Temperature measuring devices are installed at the light outlet, heat sink and reflector of the solar simulator thermal balance test to determine the temperature change at each position, and a heating plate is attached to the back of the reflector; Complete the condition preparation for the first operating condition, the second operating condition and the third operating condition.

3. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 2 is characterized in that: The heat flow meter includes a black sheet type heat flow meter and a square fort type heat flow meter; The black sheet heat flow meter and the square fortress heat flow meter have different absorption rates for the visible spectrum and the infrared spectrum. The solar radiation heat flux and the background heat flux in the current state are obtained through the surface temperature of the black sheet heat flow meter and the square fortress heat flow meter.

4. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 1 is characterized in that: After obtaining the temperature rise background heat flux at the light outlet, the method further includes: Determine test requirements, and determine the sensitive direction of the heat flow meter based on the test requirements; determining an angular coefficient for each of said sensitive directions; Based on the angle coefficient, the test process under the conditions of the first working condition, the second working condition and the third working condition is repeated.

5. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 1 is characterized in that: The background heat flux of the heat sink, the background heat flux of the temperature rise at the light outlet, and the background heat flux of the temperature rise at the reflector under the first working condition, the second working condition, and the third working condition are all measured by a heat flux meter; The heat flow calculation formula of the heat flow meter is: q=εσT 4 ; Where q is the heat flux, ε is the surface emissivity of the heat flux meter, and σ is the Steffen-Boltzmann constant, 5.67e-8 W / m 2 / K 4 , T is the surface temperature of the heat flux meter.

6. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 5 is characterized in that: The heat flow includes heat flows corresponding to the visible spectrum and the infrared spectrum, as follows: q=α1q1+α2q2; Among them, α1 is the absorptivity of solar radiation, α2 is the absorptivity of infrared radiation, q1 is the heat flow in the visible spectrum, and q2 is the heat flow in the infrared spectrum.

7. The background heat flux measurement method based on the solar simulator thermal balance test according to claim 6 is characterized in that: The heat flow meter includes a black sheet type heat flow meter and a square fort type heat flow meter. The heat flow calculation formulas of the black sheet type heat flow meter and the square fort type heat flow meter are: a 1-1 q1+a 2-1 q2=ε1σt 4 ; a 1-2 q1+a 2-2 q2=ε2σT 4 ; Among them, α 1-1 is the absorption rate of solar radiation corresponding to the black sheet heat flux meter, α 2-1 is the absorption rate of infrared radiation corresponding to the black sheet heat flow meter, α 1-2 is the solar radiation absorption rate corresponding to the square fortress heat flux meter, α 2-2 is the absorptivity of infrared radiation corresponding to the square fortress type heat flow meter, ε1 is the surface emissivity of the black sheet type heat flow meter, and ε2 is the surface emissivity of the square fortress type heat flow meter; The heat flow calculation formulas of the black sheet type heat flow meter and the square fort type heat flow meter are combined to obtain the heat flow in the infrared spectrum as the background heat flow.

8. The background heat flux measurement method based on the solar simulator thermal balance test according to any one of claims 1 to 7, characterized in that: Also includes: Determine a measurement order of the first operating condition, the second operating condition, and the third operating condition.

9. A background heat flux measurement device based on a solar simulator thermal balance test, characterized in that: include: A first measurement module, used to control the conditions of the solar simulator thermal balance test to enter a first operating condition in which the heat sink is turned on and the solar simulator is turned off; Obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the first working condition; A second measurement module is used to control the conditions of the solar simulator thermal balance test to enter a second working condition in which the heat sink is turned on and the solar simulator is turned on; Under the second working condition, when the temperatures at the light outlet, the heat sink and the reflector are stable, obtain the background heat flux of the heat sink caused by not setting a heat sink at the light outlet and the reflector, the background heat flux of the temperature rise at the light outlet due to the irradiation of the solar simulator, and the background heat flux of the temperature rise at the reflector due to the irradiation of the solar simulator, and determine the sum of the three; The third measurement module is used to control the conditions of the solar simulator thermal balance test to enter the third working condition of turning on the heat sink, turning off the solar simulator, turning on the heating plate on the back of the reflector, and adjusting the temperature of the reflector to the third working condition consistent with the reflector temperature of the second working condition; obtaining the heat sink background heat flux caused by the absence of a heat sink at the light outlet and the reflector under the third working condition, and the reflector temperature rise background heat flux caused by temperature control of the reflector, and determining the sum of the two; The determination module is used to obtain the temperature rise background heat flux at the reflector by subtracting the sum of the two from the background heat flux of the heat sink; and to obtain the temperature rise background heat flux at the light outlet by subtracting the sum of the three from the sum of the two.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the background heat flux measurement method based on the solar simulator thermal balance test as described in any one of claims 1 to 8 is implemented.

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