Near space array plane, radar and temperature control method

Abstract

The invention provides a near space array plane, a radar and a temperature control method. The near space array plane comprises a frame, a rear cover plate, heat preservation cotton, a heat dissipation assembly, a heating assembly and a temperature control module, receiving and transmitting assemblies and antenna units are evenly distributed on the first end face of the frame and are sealed through an antenna cover, and the rear cover plate is installed on the second end face. The peripheral wall of the frame and the inner wall of the antenna housing are provided with heat preservation cotton. A plurality of independent spaces are arranged in the frame, the heat dissipation assembly comprises a uniform temperature plate and fans arranged in the independent spaces, and the heating assembly comprises a plurality of groups of heating devices and first temperature measuring devices which are arranged in the independent spaces in a one-to-one correspondence manner, and standby heating devices and second temperature measuring devices; the temperature control module is used for obtaining temperature measurement results of the first temperature measurement device and the second temperature measurement device and used for controlling the draught fan, the heating device and the standby heating device. The heat dissipation design, the heating design, the heat preservation design and the array surface structure are efficiently integrated, and the device can be reliably applied to the near space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerospace electronic equipment, and in particular to a near space array, a radar and a temperature control method. BACKGROUND

[0002] With the development of high-altitude field, more and more electronic equipment works in the near space. With the increasing demand for detection and monitoring, the performance requirements of the radar array working in the near space are higher and higher, which leads to rapid increase of the size, weight and heat consumption of the array. However, due to the extremely harsh conditions of the near space environment, conventional military components cannot meet the low-temperature working conditions. Only by heating and insulation design can the components be provided with normal working temperature conditions, and the whole radar array can be designed normally. At the same time, the radar needs to dissipate the high heat generated in the normal working condition. However, due to the rarefied air in the near space, the heat dissipation is difficult. Moreover, the wind speed in the near space is large, and the heat dissipation surface of the radar in the non-working state can quickly reduce the temperature of the components, causing the failure of the components.

[0003] At present, there are two conventional solutions. One is to install a spherical antenna cover outside the array to reduce the influence of the environmental wind. The size of the antenna cover needs to be larger than the rotating diameter of the array, which will lead to significant increase of the weight of the equipment and the demand for the power device of the system. The other is to install more heating devices and increase the heating power to forcibly maintain the temperature of the components, which will significantly increase the power supply demand and control resource demand of the system. Both of the above two ways will put higher requirements on the system, even exceeding the bearing capacity of the system, and are not the optimal solutions. At this time, it is necessary to consider how to meet the large heat dissipation demand while reducing the heating devices and heating amount. In addition, the phased array has high requirements for the uniformity of the transmitting and receiving components. Under the conditions of the near space environment, the temperature gradient of the array is large, and the uniformity of the array is difficult to guarantee due to the influence of environmental conditions, array size structure and heat dissipation system design and other factors.

[0004] Therefore, in order to further improve the performance and environmental adaptability of the radar equipment and meet the use demand of the array in the near space, the above problems and difficulties need to be solved. SUMMARY

[0005] The technical problem to be solved by the present application is how to design a radar array meeting the requirements of the near space, and a near space array, a radar and a temperature control method are provided.

[0006] The near space array according to the embodiments of the present application comprises: a frame, the frame having opposite first and second end faces, the first end face uniformly arranging receiving and transmitting components, the outside of the receiving and transmitting components being provided with antenna units and being sealed by an antenna cover, and the frame having a plurality of independent spaces. Rear cover plate, installed on the second end face; Thermal insulation cotton is provided on the outer peripheral wall of the frame and the inner wall of the antenna cover; The heat dissipation assembly includes a heat spreader located between the first end face and the receiving and transmitting assembly, and a fan disposed in each of the independent spaces; The heating assembly includes multiple sets of heating devices and a first temperature measuring device arranged in a one-to-one correspondence in each of the independent spaces, as well as a backup heating device and a second temperature measuring device; A temperature control module is used to acquire the temperature measurement results of the first temperature measuring device and the second temperature measuring device, and to control the fan, the heating device and the backup heating device.

[0007] According to the near-space array of the present invention, heat dissipation design, heating design and heat preservation design are efficiently integrated with the array structure. While effectively controlling the weight of the array, heat dissipation and temperature uniformity, heating and heat preservation, lightweight and low power consumption are optimized at the same time. The designed near-space array can be reliably applied to special application environments in near space.

[0008] According to some embodiments of the present invention, the heating power of the heating device decreases in a gradient from the outer periphery of the adjacent spatial array towards the center.

[0009] In some embodiments of the present invention, each of the fans is located in the middle of the corresponding independent space, and multiple sets of the heating devices and the first temperature measuring device are symmetrically arranged on both sides of the fans.

[0010] According to some embodiments of the present invention, the air inlet of the fan is parallel to the second end face, and the air outlet of the fan is perpendicular to the second end face.

[0011] In some embodiments of the present invention, the adjacent space array further includes: a transition member disposed on the outer peripheral wall of the frame, the frame being connected to the turntable via the transition member.

[0012] According to some embodiments of the present invention, the thickness of the insulation cotton located on the inner wall of the radome is 4.7mm-5.3mm, and the thickness of the insulation cotton located on the outer peripheral wall of the frame is 28mm-32mm.

[0013] According to an embodiment of the present invention, the near-space radar includes a near-space array as described above.

[0014] A temperature control method for a near-space array according to an embodiment of the present invention includes: the temperature control method is used to implement the temperature control of the near-space array described above, the temperature control method comprising: S10, the temperature control module receives the temperature measurement results from each of the first temperature measuring devices; S20, when the temperature measurement result is lower than the first threshold, the temperature control module controls the corresponding heating device to heat; when the temperature measurement result is higher than the second threshold, the temperature control module controls the fan to dissipate heat.

[0015] According to the near-space array temperature control method of the present invention, the temperature control module receives the temperature measurement results of each first temperature measuring device and controls the heating device and the fan to maintain the temperature of each part within the reliable operating temperature range of the receiving and transmitting components, thereby effectively improving the reliability of the near-space array operation.

[0016] According to some embodiments of the present invention, in step S20, if the temperature measurement result is lower than the first threshold for more than a first preset time, the heating power of all heating devices in the corresponding independent space is controlled to be increased; if the temperature measurement result is lower than the threshold for more than a second preset time, the backup heating device is controlled to be started.

[0017] In some embodiments of the present invention, step S10 further includes: the temperature control module determines whether the temperature measurement results of each of the first temperature measuring devices are abnormal; when there are abnormal results, the temperature control module derives the derivation result corresponding to the abnormal result through the temperature measurement results of the remaining first temperature measuring devices in the corresponding independent space. Attached Figure Description

[0018] Fig. 1 This is a three-dimensional side-rear view of the near-space array according to an embodiment of the present invention; Fig. 2 A three-dimensional view of the near-space array surface with some insulation cotton, back cover plate and radome removed according to an embodiment of the present invention; Fig. 3 The rear view inside the array surface after removing the array surface frame, according to an embodiment of the present invention.

[0019] Figure label: Formation 100, Framework 1, Rear cover 2, Insulation cotton for the radome 31, insulation cotton for the left side of the frame 32, insulation cotton for the right side of the frame 33, insulation cotton for the top of the frame 34, insulation cotton for the bottom of the frame 35, insulation cotton for the rear cover 36, insulation cotton for the heat spreader 37, insulation cotton for the air duct 38, insulation cotton for the air guide frame 39, insulation cotton for the transition piece 310. Heat spreader 41, heat dissipation fins 411, fan 42, airflow guide 43 Heating device 51, first temperature measuring device 52, standby heating device 53, second temperature measuring device 54. Temperature control module 6, Antenna radome 7, Adapter 8, Receiver / transmitter component 9, Antenna element 10, Other functional modules 11, environmental temperature measurement device 12, and heat-conducting plate 13 reinforced within the frame. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0021] The steps described in the specification and the flowcharts in the accompanying drawings of this invention are not necessarily to be strictly followed according to the step numbers; the execution order of the steps can be changed. Furthermore, certain steps can be omitted, multiple steps can be combined into one step, and / or one step can be broken down into multiple steps.

[0022] To address the problems and difficulties of existing technologies, this invention proposes a near-space array 100, radar, and temperature control method with integrated heat dissipation and heating insulation design. This method integrates heat dissipation design, heating design, and insulation design with the array 100 structure in an efficient manner. It analyzes the correlation between the technical elements in each design and strengthens the design proportion of mutually beneficial elements, thereby achieving simultaneous optimization of heat dissipation and temperature uniformity, heating insulation, lightweighting, and low power consumption.

[0023] like Figs. 1-3 As shown, the near-space array 100 according to an embodiment of the present invention includes: a frame 1, a rear cover plate 2, thermal insulation cotton, a heat dissipation component, a heating component, and a temperature control module 6.

[0024] Specifically, the frame 1 has a first end face and a second end face. The first end face can be understood as the front end face of the frame 1, and the second end face can be understood as the rear end face of the frame 1. The receiving and transmitting components 9 are evenly distributed on the first end face. The antenna unit 10 is arranged on the outside of the receiving and transmitting components 9 and sealed by the antenna cover 7. The rear cover plate 2 is installed on the second end face. The outer peripheral wall of the frame 1 and the inner wall of the antenna cover 7 are provided with heat insulation cotton.

[0025] like Fig. 1 As shown, the insulation includes: antenna cover insulation 31, left side frame insulation 32, right side frame insulation 33, top frame insulation 34, bottom frame insulation 35, rear cover insulation 36, heat spreader insulation 37, duct insulation 38, air guide frame insulation 39, and transition piece insulation 310.

[0026] like Figs. 1-3As shown, the frame 1 has multiple independent spaces. The heat dissipation assembly includes a heat spreader 41 located between the first end face and the receiving / transmitting assembly, and a fan 42 located in each independent space. The heating assembly includes multiple sets of heating devices 51 and a first temperature measuring device 52, each set in a corresponding configuration, located in each independent space, as well as a backup heating device 53 and a second temperature measuring device 54. The temperature control module 6 is used to acquire the temperature measurement results of the first temperature measuring device 52 and the second temperature measuring device 54, and to control the fan 42, the heating devices 51, and the backup heating devices 53.

[0027] According to the near-space array 100 of the present invention, heat dissipation design, heating design and heat preservation design are efficiently integrated with the structure of the array 100. While effectively controlling the weight of the array 100, heat dissipation and temperature uniformity, heating and heat preservation, lightweight and low power consumption are optimized at the same time. The designed near-space array 100 can be reliably applied to special application environments in near space.

[0028] According to some embodiments of the present invention, the heating power of the heating device 51 decreases gradually from the outer periphery of the adjacent space array 100 towards the center. It should be noted that the thermal insulation characteristics of different regions of the adjacent space array 100 vary. Therefore, the power of the heating device 51 should be customized based on simulation calculations and experimental experience to avoid increased heating power consumption due to insufficient optimization of heating power consumption distribution. The thermal insulation characteristics of the outer region of the adjacent space array 100 are worse than those of the inner region; the required power consumption of the heating device 51 should be designed in a gradient manner, decreasing gradually from the outside to the inside.

[0029] In some embodiments of the present invention, such as Fig. 3 As shown, each fan 42 is located in the center of its corresponding independent space, and multiple sets of heating devices 51 and first temperature measuring devices 52 are symmetrically arranged on both sides of the fan 42. It should be noted that placing the fan 42 in the center of the independent space improves the uniformity and effectiveness of heat dissipation throughout the entire independent space. Through the uniform arrangement of multiple sets of heating devices 51 and first temperature measuring devices 52, when a first temperature measuring device 52 malfunctions, its temperature measurement result can be estimated by inferring from the surrounding first temperature measuring devices 52.

[0030] According to some embodiments of the present invention, the air inlet of the fan 42 is parallel to the second end face, and the air outlet of the fan 42 is perpendicular to the second end face. That is, the air outlet of the fan 42 is perpendicular to the adjacent array 100 and extends backward, while the air inlet direction is parallel to the adjacent spatial array 100. This improves the heat dissipation effect of the adjacent spatial array 100.

[0031] In some embodiments of the present invention, the near space array 100 further includes a transition member 8 disposed on the outer peripheral wall of the frame 1, and the frame 1 is connected to the turntable via the transition member 8. Thus, the near space can be driven to rotate by the turntable.

[0032] According to some embodiments of the present invention, the thickness of the insulation cotton located on the inner wall of the radome 7 is 4.7mm-5.3mm, and the thickness of the insulation cotton located on the outer peripheral wall of the frame 1 is 28mm-32mm. It should be noted that the insulation cotton inside the radome 7 will affect the performance of the array 100; therefore, the thickness of the insulation cotton should not be too large and should be within an acceptable range for performance loss of the array 100. For example, a 5mm insulation cotton of a certain model can be selected. Considering that excessively thick insulation cotton would increase the weight of the equipment, a 30mm insulation cotton of a certain model can be selected for the outer perimeter of the frame 1.

[0033] According to an embodiment of the present invention, the near-space radar includes a near-space array 100 as described above.

[0034] The near-space radar according to an embodiment of the present invention adopts heat dissipation design, heating design, heat preservation design and array 100 structure. While effectively controlling the weight of array 100, it achieves simultaneous optimization of heat dissipation and temperature uniformity, heating and heat preservation, lightweight and low power consumption, and can be reliably applied to special application environments in near space.

[0035] A temperature control method for a near-space array 100 according to an embodiment of the present invention includes: a temperature control method for implementing the above-described temperature control of the near-space array 100, the temperature control method comprising: S10, the temperature control module receives the temperature measurement results from each of the first temperature measuring devices; S20: When the measured temperature is below the first threshold, the temperature control module controls the corresponding heating device to heat; when the measured temperature is above the second threshold, the temperature control module controls the fan to dissipate heat. It should be noted that the first and second thresholds can be set according to the reliable operating temperature of the receiving and transmitting components.

[0036] According to the temperature control method of the near-space array 100 of the present invention, the temperature control module 6 receives the temperature measurement results of each first temperature measuring device 52 and controls the heating device 51 and the fan 42 to maintain the temperature of each part within the reliable operating temperature range of the receiving and transmitting component 9, thereby effectively improving the reliability of the operation of the near-space array 100.

[0037] According to some embodiments of the present invention, in step S20, if the temperature measurement result is lower than the first threshold for more than a first preset time, the heating power of all heating devices 51 in the corresponding independent space is increased; if the temperature measurement result is lower than the threshold for more than a second preset time, the standby heating device 53 is activated.

[0038] It should be noted that the temperature control method of the present invention combines the feature of more than 100 independent spaces in the array, which can perform single-point control of the heating device 51 in each independent space, joint control of all heating devices 51 in an independent space, and control of the standby heating device 53. Therefore, when a heating device 51 fails, temperature compensation control can be achieved by automatically switching the heating mode, thereby further improving the reliability of the operation of the adjacent space array 100.

[0039] In some embodiments of the present invention, step S10 further includes: the temperature control module 6 determines whether the temperature measurement results of each first temperature measuring device 52 are abnormal. When there are abnormal results, the temperature control module 6 derives the derivation result corresponding to the abnormal result through the temperature measurement results of the other first temperature measuring devices 52 in the corresponding independent space.

[0040] Combination Fig. 3 As shown, assuming Fig. 3 If the first temperature measuring device 52 in the upper left corner of the independent interval A shown in the middle circle malfunctions, its temperature can be estimated and derived from the temperature of the other three adjacent first temperature measuring devices 52. For example, the temperature of the first temperature measuring device 52 below it is 8℃, the temperature of the first temperature measuring device 52 to its right is 7℃, and the temperature of the first temperature measuring device 52 to its lower right is 10℃. Establish the equivalent difference relationship between the temperature X of the upper left first temperature measuring device 52 and the other three first temperature measuring devices 52: X - 8 = 10 - 7, and calculate the temperature of the malfunctioning upper left first temperature measuring device 52 as 5℃.

[0041] Based on the above description, the specific features of this invention are as follows: 1) The array 100 adopts a sealed design to reduce the direct impact of ambient wind speed on components. The array 100 adopts a zoned heat dissipation system, with multiple fans 42 connected in parallel for heat dissipation. The arrangement of the heat dissipation fans 42 on the back of the array 100 increases, allowing each section of the receiving and transmitting components 9 to dissipate heat independently and directly. This reduces the heat conduction path on the array 100, and from the overall structural design of the array 100, it reduces the temperature rise caused by large-scale heat conduction, thereby ensuring better temperature uniformity of the array 100.

[0042] 2) Through the design of frame 1, multiple independent sections are formed at the rear of frame 1. These sections primarily house the temperature control module 6 and other functional modules 11, as well as the heat dissipation section for the fan 42. Installation and maintenance of these functional sections are achieved by opening the rear cover 2. The front of frame 1 houses the receiving and transmitting assembly 9 and the antenna unit 10, which are installed and maintained by opening the front radome 7. All heat-generating modules and components achieve centralized heat dissipation by conducting heat to the heat dissipation sections. The entire array 100 is connected to the azimuth turntable via the top adapter 8, allowing it to rotate at a certain speed.

[0043] 3) The heat dissipation zone mainly consists of a heat spreader plate 41 with heat dissipation fins 411, a flow guide frame 43, and a fan 42. The main heat source of the array 100 is the receiving and transmitting components 9 evenly distributed throughout the array 100. A portion of the back mounting surface of the receiving and transmitting components is attached to the front of the heat spreader plate 41. The heat spreader plate 41 can quickly conduct heat, avoiding large temperature differences between the various units of the receiving and transmitting components 9 due to uneven airflow distribution and different conduction paths within the zone, thus affecting electrical performance. Another portion of the back of the receiving and transmitting components 9 is equipped with heating devices 51, ensuring that the heat from the heating devices 51 can be directly conducted through their component housing to the components of each unit of the receiving and transmitting components 9 during the heating and heat preservation state, improving the heating and heat preservation effect and further reducing heating power.

[0044] The heat dissipation fins 411 on the heat spreader 41 are arranged in the middle area of ​​all receiving and transmitting components 9 in the partitioned area, on the upper and lower sides in front of the fan 42. This is conducive to centralized air cooling and heat dissipation, and also keeps the heat dissipation fins 411 away from the receiving and transmitting components 9. At the same time, it avoids the ambient wind blowing directly on the heat dissipation fins 411 and carrying away more heat, which is conducive to reducing the power consumption requirement of the heating device 51 in the heating and heat preservation state.

[0045] 4) Insulation cotton is added to the outer perimeter of frame 1 and the inner wall of the radome 7 at the front of the array 100. The outer perimeter is added because frame 1 is made of 7-series aluminum alloy with good thermal conductivity, and all internal structural components of the array 100 are interconnected, forming a large heat sink. Only by adding insulation cotton to the outside can heat loss be reduced, thereby reducing heating power. This is a beneficial factor; the higher the insulation efficiency of the insulation cotton, the better. Insulation cotton is only added inside the radome 7 for two reasons: first, insulation cotton cannot be completely airtight; if it were attached to the outside of the radome 7, it would absorb moisture to some extent, affecting the transmission and reception performance of the radar array 100. Second, the radome 7 itself is a non-metallic composite material with poor thermal conductivity and a certain degree of insulation; the insulation cotton attached inside the radome 7 enhances its insulation effect.

[0046] 5) The heating element 51 and the temperature measuring device are arranged together, which facilitates the calculation of the temperature of the heating element 51 and the receiving and transmitting component 9 through the temperature measuring device. The heating element 51 is a resistive element, and its current duty cycle is controlled by the temperature control module 6, thereby controlling its heat generation. Its heat generation affects the temperature monitored by the temperature sensor. By comparing the monitored temperature with the temperature control requirements, the power of the heating element 51 is controlled. Under the worst environmental conditions, the heating duty cycle of the heating element 51 should not be lower than 90% to avoid excessive demand on transient power in the heating design.

[0047] 6) Install a backup heating device 53 in each area to improve the reliability of the heating system. In the heat preservation state, if the temperature of a certain temperature measuring device cannot be met by its corresponding heating device 51 operating at full power, firstly control the power of other heating devices 51 in this area. If the temperature control requirements still cannot be met even if all heating devices 51 in this area operate at full power, then activate the backup heating device 53 until the heating device 51 operates at full power or the temperature control requirements are met.

[0048] 7) In the non-operating heat preservation state of the array 100, if the temperature monitoring of heating device 51 in a certain area is abnormal or the heating device 51 is abnormal, the temperature control mode of this area will change from single-point temperature control of a single heating device 51 to regional joint temperature control of multiple heating devices 51 in the area. The measures taken include: (a) If the temperature measuring device fails, based on the distribution characteristics of heating devices 51 and temperature measuring devices in this area, the temperature of the faulty sensor will be derived differentially and equivalently through other monitored temperatures, and the power of heating device 51 will be further controlled accordingly. (b) If a heating device 51 fails, the power of other heating devices 51 in this area will be controlled simultaneously by monitoring the temperature of the temperature measuring device at this location. See item 6 for specific temperature control. (c) If both the temperature measuring device and the heating device 51 at a certain location fail, the temperature control requirements of other heating devices 51 in this area will be increased by a certain value, for example, increased by 20°C. See item 6 for specific temperature control.

[0049] 8) The primary factor in the heat dissipation design of the array 100 is the increase in airflow, with the heat dissipation area as a secondary factor, which should be minimized to reduce the impact of ambient wind on the insulation of the receiving and transmitting components 9 through the heat dissipation fins 411 during non-operational states, thereby reducing the demand on the heating device 51 and the heat generated. The measures taken are: first, selecting a heat dissipation fan 42 with built-in heating function, meeting the environmental conditions, with high speed and high air pressure, and capable of speed control and airflow adjustment; second, reducing the number and height of the heat dissipation fins 411 to reduce airflow resistance, i.e., increasing the airflow of the fan 42 while reducing the heat dissipation area. The specific design of the heat dissipation fins 411 is verified through simulation and experimentation, prioritizing heat dissipation of the array 100, and considering the harsh environment of the adjacent space, leaving at least a 10% heat dissipation margin.

[0050] 9) The insulation cotton on the back of frame 1 participates in the design of the heat dissipation air duct on the back of array 100. Firstly, it provides some shielding for the heat dissipation fins 411, preventing direct airflow from the environment. Secondly, it spatially separates the air inlet and outlet of the heat dissipation air duct, preventing hot air from the outlet from flowing back and interfering with the cold air from the inlet, thus affecting the inlet temperature. The outlet of fan 42 is perpendicular to the rear of array 100, and the air inlet direction is parallel to array 100.

[0051] 10) The heat dissipation uniformity can be adjusted by monitoring the temperature of different areas and controlling the speed of the fan 42. If there is a certain margin in the system power, some heat-generating components can generate a little heat to further adjust the uniformity.

[0052] 11) The thermal insulation characteristics of different regions of the array 100 are different. The power of the heating device 51 should be customized according to the simulation calculation results and experimental experience to avoid the increase in heating power demand caused by insufficient optimization of heating power distribution. The thermal insulation characteristics of the outer region of the array 100 are worse than those of the inner region. The required power consumption of the heating device 51 should be designed in a gradient manner from the outside to the inside.

[0053] In summary, the near-space array 100 structure and temperature control method proposed in this invention, which integrates heat dissipation, heating, and insulation design with the array 100 structure, efficiently integrates heat dissipation design, heating design, and insulation design with the array 100 structure. It analyzes the correlation between the technical elements in each design, strengthens the design proportion of mutually beneficial elements, and thus simultaneously optimizes heat dissipation and temperature uniformity, heating and insulation, lightweight design, and low power consumption. Then, through relevant experimental test data, the design is further verified and optimized. Furthermore, through failure mode analysis, compensation is carried out according to priority and multiple methods are adopted to further improve mission reliability.

[0054] The present invention will now be described with reference to the accompanying drawings and a specific embodiment. It is to be understood that the following description is merely exemplary and should not be construed as a specific limitation of the present invention.

[0055] The near-space array 100 of the present invention, which integrates heat dissipation and heating insulation, includes: an antenna radome 7, a frame 1, a rear cover plate 2, the array 100 and a transition piece 8, a fan mounting and airflow guide frame 43, a high-pressure axial flow fan 42, a heat spreader plate 41 with heat dissipation fins 411, serrated heat dissipation fins 411, a receiving and transmitting assembly 9, a temperature control module 6, other functional modules 11, an antenna unit 10, a heating device 51, a first temperature measuring device 52, a backup heating device 53, an ambient temperature measuring device 12, a heat-conducting plate 13 reinforced within the frame, insulation cotton 31 for the antenna radome, insulation cotton 32 for the left side of the frame, insulation cotton 33 for the right side of the frame, insulation cotton 34 for the top of the frame, insulation cotton 35 for the bottom of the frame, insulation cotton 36 for the rear cover plate, insulation cotton 37 for the heat spreader plate, insulation cotton 38 for the air duct, insulation cotton 39 for the airflow guide frame, and insulation cotton 310 for the transition piece.

[0056] The frame 1 is the main structure of the array 100, featuring a hollow design with only horizontal and vertical beams for installation and sealing. The heat dissipation area at the back of the frame 1 is sealed by a heat spreader 41 with heat dissipation fins 411 mounted at the front. The functional areas at the back of the frame 1 are sealed by a rear cover 2 mounted at the rear. The front of the frame 1 is sealed by an antenna radome 7 mounted at the front. The top of the frame 1 is connected to the azimuth turntable via the array 100 and adapter 8, sealing the interior of the frame 1. Through these four seals, the interior of the array 100 is a sealed environment, preventing direct environmental impact on the internal modules and components.

[0057] Heating device 51 and first temperature measuring device 52 need to be pre-installed in pairs onto the receiving and transmitting assembly 9, temperature control module 6, and other functional modules 11 according to their corresponding models. Backup heating device 53 and second temperature measuring device 54 need to be pre-installed in pairs onto the heat spreader 41 with heat dissipation fins 411 according to their corresponding models. After the installation is completed, the electrical performance of the installed heating device 51 and temperature measuring device is re-tested, and the installation quality is re-tested based on the temperature monitoring of the heating device 51 when it is powered on by the infrared temperature measuring device.

[0058] First, a heat spreader plate 41 with heat dissipation fins 411 and a heat-conducting plate 13 for reinforcement are installed at the front of frame 1. Then, the receiving and transmitting assembly 9, the antenna unit 10, and the antenna cover 7 with antenna cover insulation cotton 31 attached to its internal surface are installed. Ambient temperature measuring devices 12 are installed on the left and right sides of frame 1. Then, a temperature control module 6 and other functional modules 11 are installed at the rear of frame 1. At the rear of the heat spreader plate 41 with heat dissipation fins 411, heat spreader plate insulation cotton 37, air duct insulation cotton 38, fan mounting and air guide frame 43, high-pressure axial flow fan 42, and air guide frame insulation cotton 39 are installed in sequence.

[0059] After the electrical interconnection of array 100 is completed, overall system commissioning begins. During commissioning, the heat dissipation performance of the temperature control system is verified at room temperature. First, it is ensured that the data communication of all heating elements, temperature measuring devices, and high-pressure axial flow fan 42 is normal. Then, the operating status of the heating elements and high-pressure axial flow fan 42 is manually and automatically controlled through temperature control module 6 to ensure the normal operation of the temperature control system. Finally, when the radar is operating at full power, the temperature data of the receiving and transmitting component 9 and other functional modules 11 are monitored to ensure that the high-temperature heat dissipation of the radar in ground operation meets the requirements.

[0060] After debugging, install the rear cover plate 2, the array surface 100, the adapter 8, and the insulation cotton 32 on the left side of the frame, 33 on the right side of the frame, 34 on the top of the frame, 35 on the bottom of the frame, 36 on the rear cover plate, and 310 on the transition piece. Then, conduct heating and insulation tests in a low-temperature, low-pressure chamber. The low-temperature setting is higher than the actual working environment temperature and the insulation temperature of the functional components to avoid damage to the components in case of abnormal test conditions.

[0061] During the low-temperature and low-pressure test, monitor the data of all heating devices 51 and temperature measuring devices to see if they match the design estimates, i.e., if the insulation requirements are met. If a heating device 51 is operating at full power but the temperature monitored by the corresponding temperature measuring device does not meet the minimum temperature requirement, the power of the heating device 51 at that location needs to be increased. If a heating device 51 is operating at a lower duty cycle but the temperature monitored by the corresponding temperature measuring device already meets the minimum temperature requirement, the power of the heating device 51 at that location needs to be decreased.

[0062] During the low temperature and low pressure test, the response time of the heating element and the temperature measuring device after the control command is issued by the display and control interface of the temperature control module 6 is monitored. This is used to calculate the heat capacity and heat conduction speed of the array 100 structure, providing data support for the optimization of the control parameters of the temperature control module 6, and improving the temperature control accuracy and time efficiency of the temperature control module 6.

[0063] During the low temperature and low pressure test, the abnormal situation of the heating device 51 and the first temperature measuring device 52 is simulated, and then it is observed whether the temperature control working mode is automatically changed, that is, the temperature control mode in this range is changed from single-point temperature control of a single heating device 51 to regional joint temperature control of multiple heating devices 51.

[0064] During the low-temperature and low-pressure test, the heat dissipation conditions of the array 100 under working conditions are simulated by the heating device 51 according to a certain heat dissipation ratio. At this time, the relevant data of the high-pressure axial flow fan 42 and the first temperature measuring device 52 are mainly monitored and converted according to a certain ratio. First, it is confirmed whether the temperature measured by the first temperature measuring device 52 meets the low-temperature heat dissipation requirements; second, it is confirmed whether the speed of the high-pressure axial flow fan 42 affects the regional heat dissipation temperature; and third, it is confirmed whether the temperature uniformity of the monitored temperature of the receiving and transmitting components 9 meets the usage requirements of the array 100. At the same time, by adjusting the heat dissipation of the heating device 51 and the speed of the high-pressure axial flow fan 42 on some of the receiving and transmitting components 9, the temperature uniformity of the array 100 is optimized and compensated. The heat dissipation compensation data and the speed of the high-pressure axial flow fan 42 in each zone are then solidified as actual working input.

[0065] Through the description of specific embodiments, a more in-depth and specific understanding should be gained of the technical means and effects adopted by the present invention to achieve the intended purpose. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

Claims

1. A near-space array, characterized in that, include: The frame has a first end face and a second end face that are opposite each other. The first end face is evenly distributed with receiving and transmitting components. The outside of the receiving and transmitting components is provided with antenna elements and sealed by an antenna cover. The frame has multiple independent spaces. Rear cover plate, installed on the second end face; Thermal insulation cotton is provided on the outer peripheral wall of the frame and the inner wall of the antenna cover; The heat dissipation assembly includes a heat spreader located between the first end face and the receiving and transmitting assembly, and a fan disposed in each of the independent spaces; The heating assembly includes multiple sets of heating devices and a first temperature measuring device arranged in a one-to-one correspondence in each of the independent spaces, as well as a backup heating device and a second temperature measuring device; A temperature control module is used to acquire the temperature measurement results of the first temperature measuring device and the second temperature measuring device, and to control the fan, the heating device and the backup heating device.

2. The near-space array according to claim 1, characterized in that, The heating power of the heating device decreases in a gradient from the outer periphery of the adjacent spatial array towards the center.

3. The near-space array according to claim 1, characterized in that, Each of the aforementioned fans is located in the center of its corresponding independent space, and multiple sets of the heating devices and the first temperature measuring device are symmetrically arranged on both sides of the fans.

4. The near-space array according to claim 1, characterized in that, The air inlet of the fan is parallel to the second end face, and the air outlet of the fan is perpendicular to the second end face.

5. The near-space array according to claim 1, characterized in that, The adjacent space array also includes: a transition piece disposed on the outer peripheral wall of the frame, and the frame is connected to the turntable through the transition piece.

6. The near-space array according to claim 1, characterized in that, The thickness of the insulation cotton located on the inner wall of the radome is 4.7mm-5.3mm, and the thickness of the insulation cotton located on the outer peripheral wall of the frame is 28mm-32mm.

7. A near-space radar, characterized in that, The near-space radar includes a near-space array as described in any one of claims 1-6.

8. A temperature control method for near-space arrays, characterized in that, include: The temperature control method is used to achieve temperature control of the near-space array surface according to any one of claims 1-6, and the temperature control method includes: S10, the temperature control module receives the temperature measurement results from each of the first temperature measuring devices; S20, when the temperature measurement result is lower than the first threshold, the temperature control module controls the corresponding heating device to heat; when the temperature measurement result is higher than the second threshold, the temperature control module controls the fan to dissipate heat.

9. The temperature control method for near-space arrays according to claim 8, characterized in that, In step S20, if the temperature measurement result is lower than the first threshold for more than a first preset time, the heating power of all heating devices in the corresponding independent space is increased; if the temperature measurement result is lower than the threshold for more than a second preset time, the backup heating device is activated.

10. The temperature control method for near-space arrays according to claim 8, characterized in that, Step S10 further includes: the temperature control module determines whether the temperature measurement results of each of the first temperature measuring devices are abnormal. When there are abnormal results, the temperature control module derives the derivation result corresponding to the abnormal result through the temperature measurement results of the remaining first temperature measuring devices in the corresponding independent space.

Images