Infrared guidance control semi-physical simulation system based on light and large-volume target cabin

Abstract

The application provides an infrared guidance control semi-physical simulation system and terminal based on a light and large-volume target cabin, which comprises a five-axis turntable, a test table / power-on device, a real-time simulation control system, a target digital scene generation system, a product to be tested, an infrared target simulator, a liquid nitrogen and nitrogen source, a high and low temperature circulation system, a temperature control system, a product cabin, a connecting cabin, a target cabin, an infrared window and the like. The target cabin comprises a fixed insulation layer, a flexible soft cover, a heat insulation flange and a fixed insulation layer support. The flexible soft cover is connected with the outer second shaft of the five-axis turntable through the heat insulation flange and can swing with the outer second shaft. The top of the flexible soft cover of the target cabin is connected with the fixed insulation layer, and the fixed insulation layer is connected with a gantry or a house top through the fixed insulation layer support. The application greatly reduces the requirement of the weight of the target cabin on the load of the turntable, and the internal space of the flexible cold cabin needs to meet the swing range of the target simulator, so that the volume is large and the uniformity control of the temperature field is facilitated.

Description

Technical Field

[0001] This invention relates to the field of infrared guidance and control hardware-in-the-loop simulation technology, specifically to an infrared guidance and control hardware-in-the-loop simulation system and terminal based on a lightweight, large-volume target cabin. Background Technology

[0002] Hardware-in-the-loop (HIP) simulation of infrared guidance and control systems in cryogenic environments is an important means of verifying the system performance and environmental adaptability of infrared guidance and control systems in cryogenic environments. With the development of high-performance flexible multilayer insulation materials and non-vacuum refrigeration technology, this method combines traditional five-axis turntable-based infrared guidance and control systems with cryogenic environment simulation technology. A flexible insulation cover forms a connecting chamber that connects the inner three-axis and outer two-axis target arms of the five-axis turntable, accommodating the high-dynamic rotation of the five-axis turntable. Simultaneously, a cooling chamber and matching heat-insulated infrared-transmitting windows are added to the connection between the target simulator and the tested guidance and control system, creating a locally sealed cold environment along the entire optical transmission path from the target simulator on the five-axis turntable to the tested product. This overcomes the limitation of existing cryogenic infrared guidance and control HIP systems that cannot simultaneously achieve cryogenic simulation of the entire optical transmission path and high-dynamic relative motion simulation. For example, a small cold chamber is installed on the inner three axes of a five-axis turntable to cool the guidance and control system under test (hereinafter referred to as "product under test"). The infrared target is simulated by mounting the target chamber equipped with an infrared target simulator on the outer two-axis target arm of the five-axis turntable. The two are connected by a flexible connecting chamber, which can realize both low-temperature simulation of the all-optical transmission path and high-dynamic relative motion simulation, and realize the simulation of the detection and tracking process.

[0003] When the target simulator has high functional requirements, a complex structure, a large size, and a heavy weight, in order to ensure the uniformity of the temperature field inside the target cabin, the target cabin becomes even larger and heavier. The weight of the target simulator and the target cabin is all on the outer two axes of the turntable, which may exceed the load capacity of the outer two axes of the turntable and affect the dynamic performance of the turntable in simulating the target's line-of-sight motion.

[0004] In addition, the size of the target cabin is limited by the small volume of the external dual-axis structure, which is not conducive to the control of temperature field uniformity.

[0005] Therefore, there is an urgent need in the market for a hardware-in-the-loop simulation system for low-temperature infrared guidance and control based on a lightweight, large-volume target cabin that can alleviate the load pressure on the turntable from the target cabin. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide an infrared guidance and control hardware-in-the-loop simulation system and terminal based on a lightweight, large-volume target cabin.

[0007] The present invention provides an infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target compartment, comprising: a five-axis turntable, a test bench / power supply, a real-time simulation control system, a target digital scene generation system, a product under test, an infrared target simulator, liquid nitrogen and nitrogen source, a high and low temperature cycling system, a temperature control system, a product compartment, a connecting compartment, a target compartment, and an infrared window;

[0008] The real-time simulation control system, five-axis rotary table, test bench / power supply equipment, and target digital scene generation system are connected and communicate via a network; the liquid nitrogen and nitrogen source are connected to the high and low temperature circulation system through pipelines, and the high and low temperature circulation system is connected to the product compartment, connecting compartment, and target compartment; the temperature control system is connected to the high and low temperature circulation system through cables, and collects parameters of the product compartment, connecting compartment, target compartment, infrared target simulator, and the product under test located in the product compartment through cables and temperature sensors;

[0009] The product compartment and the target compartment are located on the five-axis turntable. An infrared target simulator is installed in the target compartment. The product compartment and the target compartment are connected by the connecting compartment. The connecting compartment and the target compartment are interconnected and have integrated temperature field control. The infrared window is located between the product compartment and the connecting compartment.

[0010] The target compartment includes a fixed insulation layer, a flexible soft cover, a heat insulation flange, and a support for the fixed insulation layer.

[0011] Preferably, the flexible cover of the target compartment is connected to the outer two axes of the five-axis turntable via a heat-insulating flange, and can swing with the outer two axes. The top of the flexible cover of the target compartment is connected to a fixed insulation layer, and the fixed insulation layer is connected to a fixed object via a fixed insulation layer bracket.

[0012] Preferably, the five-axis turntable is used to simulate the relative attitude and motion characteristics of the product under test and the infrared target simulator;

[0013] The real-time simulation control system is used to control the connected devices in real time and advance the simulation process in real time according to the time flow.

[0014] The test bench / power supply is used to process the product under test, including powering on, parameter setting, and signal acquisition.

[0015] The target digital scene generation system is used to provide digital scenes for the infrared target simulator, drive the infrared target simulator to generate infrared beams in different scenes and after collimation, and project them to the receiving optical system of the product under test.

[0016] Preferably, the infrared window is used for thermal isolation between the product compartment and the connecting compartment and the target compartment, and also to transmit infrared beams;

[0017] The liquid nitrogen and nitrogen source provide the necessary cryogenic nitrogen for the high and low temperature circulation system. The temperature control system controls the temperature field of the product compartment, the connecting compartment, and the target compartment by controlling the equipment and valves of the high and low temperature circulation system based on the current parameters of the three compartments.

[0018] Preferably, the flexible cover of the target cabin is made of soft heat insulation material, and the top fixed heat insulation layer is made of hard heat insulation material. The corresponding parameters of the materials required for the flexible cover and the fixed heat insulation layer are determined according to the cabin temperature required by the infrared target simulator.

[0019] Preferably, the fixed insulation layer is fixedly connected to the load-bearing beams of the roof or to the erected gantry frame via a bracket.

[0020] Preferably, a through hole is provided in the middle of the heat-insulating flange to allow nitrogen gas to flow between the target compartment and the connecting compartment, while also assisting in the installation and disassembly of the flexible soft cover and the infrared target simulator.

[0021] Preferably, the product compartment is detachable, and the material includes rigid insulation material or a composite material combined with soft insulation material, with corresponding parameters determined according to the required internal temperature of the product being tested.

[0022] Preferably, the material of the connecting chamber includes a multi-layer composite flexible insulation cover made of soft insulation material, and the corresponding parameters are determined according to the required internal temperature of the product being tested.

[0023] The present invention provides an intelligent mobile terminal, including the aforementioned infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The target cabin of this invention has only one heat insulation flange directly installed on the outer two axes. The top insulation structure fixes the insulation layer and the flexible soft cover. Most of the weight is suspended on the roof or gantry, which greatly reduces the load requirements of the target cabin on the turntable, relieves the load pressure of the target cabin on the turntable, and improves the dynamic performance of the turntable in simulating the target line-of-sight motion.

[0026] 2. The flexible cold chamber of the present invention has a large internal space that meets the swing range of the target simulator and is conducive to temperature field uniformity control. Attached Figure Description

[0027] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a system principle block diagram of the present invention.

[0029] Figure 2 This is a schematic diagram showing the changes in the flexible soft cover of the target compartment and the connecting compartment when the target swings in this invention. Detailed Implementation

[0030] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0031] According to the present invention, an infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin is provided, such as... Figures 1 to 2 As shown, it includes: a five-axis turntable 1, a test bench / power supply equipment 2, a real-time simulation control system 3, a target digital scene generation system 4, the product under test 7, an infrared target simulator 11, liquid nitrogen and nitrogen source 18, a high and low temperature circulation system 16, a temperature control system 17, a product compartment 8, a connecting compartment 10, a target compartment 9, and an infrared window 15.

[0032] Specifically, the real-time simulation control system, five-axis rotary table, test bench / power supply equipment, and target digital scene generation system are connected and communicate via a network. Liquid nitrogen and nitrogen gas sources are connected to the high and low temperature circulation system through pipelines, which in turn connects to the product compartment, connecting compartment, and target compartment. The temperature control system is connected to the high and low temperature circulation system via cables and collects parameters from the product compartment, connecting compartment, target compartment, infrared target simulator, and the product under test located in the product compartment via cables and temperature sensors. The product compartment and target compartment are located on the five-axis rotary table. The infrared target simulator 11 is installed in the target compartment. The product compartment and target compartment are connected via a connecting compartment, which is interconnected and has integrated temperature field control. An infrared window is located between the product compartment and the connecting compartment for thermal isolation and light transmission. The infrared target simulator should be able to adapt to the required low temperature environment and can be a single-point source, multi-point source composite, or low-temperature resistant infrared imaging target simulator. It should be noted that the infrared target simulator must not block the through hole in the heat insulation flange.

[0033] The five-axis rotary table is used to simulate the relative attitude and motion characteristics of the product under test and the infrared target simulator. The five-axis rotary table, along with the product compartment, connecting compartment, and target compartment, are placed in a constant temperature and humidity environment to prevent localized heat leakage or cold accumulation that could cause surface frost or condensation. The product compartment is installed on the inner three axes (5) of the five-axis rotary table, and the product under test is installed inside the product compartment. The target compartment is installed on the outer two axes (6) of the five-axis rotary table, and the infrared target simulator is installed inside the target compartment.

[0034] Real-time simulation control systems are used to control connected devices in real time, advancing the simulation process according to a timeline. Test benches / power-on equipment are used to process the product under test, including powering on, parameter setting, and signal acquisition.

[0035] The target digital scene generation system is used to provide digital scenes for the infrared target simulator, drive the infrared target simulator to generate infrared beams 20 in different scenes and after collimation. In other words, it drives the infrared target simulator to physically radiate infrared targets, interference, background and other scenes and generate infrared beams after collimation, which are then projected onto the receiving optical system of the product under test.

[0036] Liquid nitrogen and nitrogen gas sources provide the necessary cryogenic nitrogen for the high and low temperature circulation system. The temperature control system, based on the current parameters of the product compartment, connecting compartment, and target compartment, controls the temperature field of these three compartments by controlling the equipment and valves of the high and low temperature circulation system. The current parameters include the current temperature and pressure of the three compartments.

[0037] The target cabin includes a fixed insulation layer 12, a flexible cover 19, a thermal insulation flange 21, and a fixed insulation layer support 14. The flexible cover of the target cabin is connected to the outer two axes of the five-axis turntable via the thermal insulation flange, allowing it to swing with the outer two axes. The top of the flexible cover is connected to the fixed insulation layer, which is connected to a fixed object via the fixed insulation layer support. Specifically, the fixed insulation layer is fixedly connected to the roof beam / gantry frame 13 of the building via the support. In other words, the fixed insulation layer is connected to the roof via the support. To ensure load-bearing capacity, it is usually connected to the load-bearing roof beam. When the roof cannot be used to fix the fixed insulation layer, a gantry frame can be erected to support and fix the weight of the fixed insulation layer. The target cabin space formed by the flexible cover and the fixed insulation layer should ensure that no structural interference occurs within the designed swing angle range of the outer two axes. The flexible cover of the target cabin is made of soft insulation materials, such as aerogel, aluminized polyester, and polyimide, forming a composite material. The top fixed insulation layer uses rigid insulation materials, such as low-temperature fiberglass or epoxy resin. The parameters of the materials required for the flexible housing and fixed insulation layer are determined based on the required internal temperature of the infrared target simulator, including the required material thickness. The top fixed insulation layer facilitates the installation of air intake, return, and exhaust ducts. A through-hole is provided in the center of the heat-insulating flange to allow nitrogen to flow between the target chamber and the connecting chamber, while also assisting in the installation and disassembly of the flexible housing and the infrared target simulator. The structure facilitates the disassembly of the flexible housing and the installation and disassembly of the infrared target simulator, and the installation structure ensures the positioning accuracy of the infrared target simulator under five-axis turntable rotation conditions.

[0038] The product compartment is detachable and made of materials including rigid insulation or composite materials combined with flexible insulation. The parameters are determined based on the required internal temperature of the product being tested. Examples of rigid insulation materials include low-temperature fiberglass and epoxy resin, while examples of flexible insulation materials include aerogel, aluminized polyester, and polyimide. The parameters include the design thickness for the required internal temperature of the product being tested. The structure is sealed except for the air inlet, return, and exhaust ducts, facilitating product installation and disassembly. The installation structure ensures accurate product positioning under five-axis rotary table rotation conditions.

[0039] The connecting chamber is made of a multi-layered composite flexible insulation cover combining soft insulation materials. The parameters are determined based on the required chamber temperature of the product being tested. Soft insulation materials include aerogel, aluminized polyester, polyimide, and fiber cloth. The parameters include the design thickness for the required chamber temperature. The flexible insulation cover needs to have certain pressure resistance and tensile strength. Its structure and dimensions are set according to the movement range of the five-axis turntable, and it should not be damaged by tension after the turntable rotates to its defined limit angle.

[0040] The infrared window serves as thermal insulation between the product compartment and the connecting compartment / target compartment, while also transmitting infrared light. The material of the infrared window is selected based on the operating wavelength of the product under test and the infrared target simulator, forming a double-layered heat-insulating window. For example, germanium glass or sapphire with an anti-reflective coating for the required operating wavelength can be used. The product compartment can be independently temperature-controlled as needed. The connecting compartment and target compartment are interconnected, and their temperature and flow field are controlled uniformly.

[0041] The present invention provides an intelligent mobile terminal, including an infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin.

[0042] Those skilled in the art will understand that, in addition to implementing the system, apparatus, and their modules provided by this invention in purely computer-readable program code, the same program can be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system, apparatus, and their modules provided by this invention can be considered a hardware component, and the modules included therein for implementing various programs can also be considered structures within the hardware component; alternatively, modules for implementing various functions can be considered both software programs implementing the method and structures within the hardware component.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A hardware-in-the-loop simulation system for infrared guidance and control based on a lightweight, large-volume target cabin, characterized in that, include: Five-axis rotary table, test bench / power supply equipment, real-time simulation control system, target digital scene generation system, product under test, infrared target simulator, liquid nitrogen and nitrogen source, high and low temperature cycle system, temperature control system, product compartment, connecting compartment, target compartment and infrared window; The real-time simulation control system, five-axis rotary table, test bench / power supply equipment, and target digital scene generation system are connected and communicate via a network; the liquid nitrogen and nitrogen source are connected to the high and low temperature circulation system through pipelines, and the high and low temperature circulation system is connected to the product compartment, connecting compartment, and target compartment; the temperature control system is connected to the high and low temperature circulation system through cables, and collects parameters of the product compartment, connecting compartment, target compartment, infrared target simulator, and the product under test located in the product compartment through cables and temperature sensors; The product compartment and the target compartment are located on the five-axis turntable. An infrared target simulator is installed in the target compartment. The product compartment and the target compartment are connected by the connecting compartment. The connecting compartment and the target compartment are interconnected and have integrated temperature field control. The infrared window is located between the product compartment and the connecting compartment. The target compartment includes a fixed insulation layer, a flexible soft cover, a heat insulation flange, and a fixed insulation layer support. The flexible cover of the target compartment is connected to the outer two axes of the five-axis turntable via a heat insulation flange, and can swing with the outer two axes. The top of the flexible cover of the target compartment is connected to the fixed insulation layer, and the fixed insulation layer is connected to the fixed object via a fixed insulation layer bracket.

2. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The five-axis rotary table is used to simulate the relative attitude and motion characteristics of the product under test and the infrared target simulator. The real-time simulation control system is used to control the connected devices in real time and advance the simulation process in real time according to the time flow. The test bench / power supply is used to process the product under test, including powering on, parameter setting, and signal acquisition. The target digital scene generation system is used to provide digital scenes for the infrared target simulator, drive the infrared target simulator to generate infrared beams in different scenes and after collimation, and project them to the receiving optical system of the product under test.

3. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The infrared window is used for thermal isolation between the product compartment and the connecting compartment and the target compartment, and also transmits infrared beams. The liquid nitrogen and nitrogen source provide the necessary cryogenic nitrogen for the high and low temperature circulation system. The temperature control system controls the temperature field of the product compartment, the connecting compartment, and the target compartment by controlling the equipment and valves of the high and low temperature circulation system based on the current parameters of the three compartments.

4. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The target cabin's flexible cover is made of soft insulation material, while the top fixed insulation layer is made of hard insulation material. The corresponding parameters of the materials required for the flexible cover and the fixed insulation layer are determined based on the cabin temperature required by the infrared target simulator.

5. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The fixed insulation layer is fixedly connected to the load-bearing beams of the roof or to the erected gantry frame via a bracket.

6. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The heat-insulating flange has a through hole in the middle to allow nitrogen gas to flow between the target compartment and the connecting compartment, while also assisting in the installation and removal of the flexible soft cover and the infrared target simulator.

7. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The product compartment is detachable and is made of rigid insulation materials or composite materials combined with soft insulation materials. The corresponding parameters are determined according to the required internal temperature of the product being tested.

8. The infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin according to claim 1, characterized in that, The material of the connecting chamber includes a multi-layer composite flexible insulation cover made of soft insulation materials, and the corresponding parameters are determined according to the required internal temperature of the product being tested.

9. A smart mobile terminal, characterized in that, The invention includes the infrared guidance and control hardware-in-the-loop simulation system based on a lightweight, large-volume target cabin, as described in any one of claims 1 to 8.

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