CN110366342A - A hyperspectral load electric control box system suitable for space environment - Google Patents

Abstract

The invention provides a hyperspectral load electric control box system suitable for space environment, which solves the problem of large volume, heavy weight, poor electromagnetic shielding performance of the existing space electric control box, and replacement of circuit board components or boards in the cavity of the electric control box. The problem of complex process when frame structure. The system includes a box body, a control bus motherboard and a plurality of drawer-type circuit units; one end of the box body is provided with multiple insertion ports from top to bottom, and the other end of the box is equipped with a control bus motherboard, which is connected with each A connector is provided at a position opposite to the two insertion ports; the drawer type circuit unit is arranged between the insertion port and the connector; the drawer type circuit unit includes a fixed frame, a circuit board functional module installed on the fixed frame, and a circuit board functional module The electrical connectors and electrical connectors on the board; the circuit board functional modules are connected to the connectors through electrical connectors, and the circuit board functional modules are connected to external devices through electrical connectors; the fixed frame is connected to the inner walls of the two sides of the box through sliding components.

Description

A hyperspectral load electric control box system suitable for space environment

technical field

The invention belongs to an electric control box, in particular to a hyperspectral load electric control box system suitable for a space environment.

Background technique

In recent years, with the development of aerospace technology, more and more attention has been paid to space optical payloads. In the optical load system, the relevant photoelectric functions are realized by installing corresponding circuit boards in the electric control box. According to the different design status, there are various styles and types of electric control boxes.

The electric control box of the traditional space load mostly adopts a square box structure or a stacked series structure. The electric control box of this structure is large in size and heavy in weight. The conventional electric control box adopts a single-cavity closed structure. The circuit board in the cavity is connected to the outside world by installing an external connector through openings on the cavity wall. The external connector and the cavity wall opening are fitted with a small gap. There is also a phenomenon of magnetic flux leakage, so that the closed cavity is not closed, and the electromagnetic shielding performance is poor. The external connector and the circuit board are generally connected by flexible wire welding. When the circuit board is replaced with components or the frame structure needs to be partially changed, the flexible wire needs to be desoldered when the circuit board is disassembled, which is a complicated process.

Because the space electric control box has to experience the harsh mechanical environment during launch, and needs to withstand a large number of mechanical environments such as vibration, shock, and overload during the rocket launch process, therefore, the design of the space electric control box should not only consider structural strength, light weight, etc. Quantification, reliability, thermal environment adaptability, electromagnetic compatibility and other requirements, and the influence of the mechanical environment must also be fully considered to meet the assessment of the vibration environment test.

Because of the complexity of the space environment, various high-energy particles and space rays are likely to have adverse effects on the circuit boards in the cavity of the electric control box with optical loads, especially the electronic components in the circuit boards, resulting in various abnormal phenomena. occur. At the same time, the electric control box and other electric control equipment are also likely to cause electromagnetic interference with each other, resulting in damage to the electric control function.

Contents of the invention

In order to solve the technical problems of large volume, heavy weight, poor electromagnetic shielding performance of the electric control box in the existing space, and the complicated process of replacing circuit board components or board frame structures in the cavity of the electric control box, the present invention provides a Hyperspectral load electric control box system for space environment.

To achieve the above object, the technical solution provided by the invention is:

A hyperspectral load electric control box system suitable for space environments, which is special in that it includes a box body, a control bus motherboard, and multiple drawer-type circuit units; one end of the box body is provided with multiple plug-in mouth, the other end of the box is provided with the control bus motherboard, the control bus motherboard is provided with a connector at a position opposite to each insertion port; The number is matched, and one-to-one correspondence, the drawer-type circuit unit is arranged between the insertion port and the connector; the drawer-type circuit unit includes a fixed frame, a circuit board function module, an electrical connector and an electrical connector; the circuit board function module Installed on the fixed frame, the electrical connector and the electrical connector are installed on the functional module of the circuit board; the functional module of the circuit board is connected with the connector through the electrical connector, and the functional module of the circuit board is connected with the external equipment through the electrical connector; The fixed frame is connected with the inner walls of the two side plates of the box body through a sliding assembly.

Further, each functional module of the circuit board is provided with an L-shaped cooling plate, and the material of the cooling plate is T2 copper alloy.

Further, the material of the fixed frame is 6061 hard aluminum alloy, which includes a left side plate, a right side plate, a front side plate, and a rear side plate; the left side plate and the right side plate are provided with threaded holes, and the screws are sequentially After passing through the functional module of the circuit board and the threaded holes, the functional module of the circuit board is fixed on the fixed frame; the front side plate is provided with mounting holes for installing electrical connectors.

Further, both sides of the box are plate-fin heat exchange structures.

Further, reinforcing ribs are provided between the left side panel and the right side panel, and between the front side panel and the rear side panel.

Further, the functional module of the circuit board is an analog acquisition board assembly or a lower computer control board assembly or a calibration power supply control board assembly or a motion drive control board assembly or an imaging circuit plus a power-off control board assembly.

Further, the sliding connection assembly includes linear guide rails respectively provided on the outer walls of the left side plate and the right side plate, and guide grooves provided on the inner walls of the two side plates of the box to cooperate with the linear guide rails.

Further, the material of the linear guide rail is 6061 hard aluminum alloy.

Further, the box body is provided with grounding stakes, the material of which is T2 copper alloy; the surface of the grounding stakes is gold-plated.

Compared with prior art, the advantage of the present invention is:

1. In the electric control box system of the present invention, a plurality of drawer-type circuit units are laminated and assembled in the box body, and the circuit board function modules are plugged and connected to the control bus motherboard by moving the drawer-type circuit units into and out of the box body. , and then realize the exchange and communication of signals. Each functional module of the circuit board is designed as an independent structural unit, and the communication of multiple functional modules of the circuit board can be realized in one box; it meets the installation layout of the electronic control system of the hyperspectral imager, Miniaturized and lightweight design; multiple circuit board functional modules are installed in one box, and its electromagnetic shielding performance is good;

The electric control box system of this application is a modular design, and the control bus motherboard is installed separately in the box. Through the fault phenomenon and the test of the signal of the control bus motherboard, it is relatively easy to locate the fault and determine that it is a specific layer of circuit board function module. If a fault occurs, the functional module of the faulty circuit board of this layer is removed for maintenance and replacement. The replacement process does not involve the functional modules of other layers of circuit boards. The maintenance and replacement process is simple and the operation is convenient.

2. The present invention can be provided with an L-shaped heat dissipation plate on the functional module of the circuit board, which has high heat conduction performance and can quickly conduct heat from the components on the functional module of the circuit board to the fixed frame.

3. The material of the fixing frame of the present invention can be 6061 hard aluminum alloy to increase rigidity; adopting the frame structure can not only fix the functional modules of the circuit board and prevent vibration damage, but also can be used as a heat dissipation path for the functional modules of the circuit board.

4. The two side plates of the box body of the present invention adopt a plate-fin heat exchange structure, which is connected with an external cooling source to form a circulation loop to improve heat dissipation efficiency.

5. Due to the dense layout of components on the functional modules of the circuit board, in order to improve the structural strength of the drawer-type circuit unit, reinforcing ribs are provided on the fixed frame.

6. The present invention can realize the moving in and out of each layer of drawer-type circuit units relative to the box through the cooperation of the linear guide rails on the outer surface of the two sides of the fixed frame and the guide grooves on the inner walls of the two sides of the box to ensure the sealing of the connection position , Electromagnetic shielding, but also increase the mechanical stability of the structure.

7. In order to improve the safety and reliability of the electric control box system, a ground stake is provided on the box body.

Description of drawings

Fig. 1 is the structural representation of the hyperspectral load electric control box system applicable to the space environment of the present invention;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is a structural schematic diagram 1 of the fixed frame in the hyperspectral load electric control box system applicable to the space environment of the present invention;

Fig. 4 is a second structural schematic diagram of the fixed frame in the hyperspectral load electric control box system applicable to the space environment according to the present invention.

Wherein, the reference signs are as follows:

1-box body, 11-insert port, 12-quick connector, 13-cooling flow tube, 14-rear plate, 15-upper plate, 16-front plate, 17-bottom plate, 2-control bus motherboard, 21- Connector, 3-drawer circuit unit, 30-fixed frame, 31-left side panel, 32-right side panel, 34-front side panel, 35-rear side panel; 311-threaded hole, 312-linear groove, 313 -Linear guide rail, 314-lateral connection fixing hole, 321-installation hole, 33-reinforcing rib, 4-circuit board function module, 41-electrical connector, 42-electrical connector, 5-L-shaped cooling plate, 6-analog Quantity acquisition board assembly, 7-lower computer control board assembly, 8-calibration power supply control board assembly, 9-motion drive control board assembly, 10-imaging circuit plus power-off control board assembly, 22-grounding pile.

Detailed ways

The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Space environmental radiation will cause adverse effects on electronic control systems, and the effective way to prevent damage is space separation. Therefore, how to reasonably support and protect the electronic control system of the space optical load structurally becomes the key to whether the instrument can work normally in the space environment.

The process of replacing circuit board components or board and frame structures in the existing box cavity is complicated. If a certain circuit board or a certain component has a problem, the internal structure needs to be disassembled when replacing it, and the operation and maintenance process is complicated. Based on the shortcomings of the traditional electric control box, this application proposes a modular splicing push-pull frame type double-layer isolation structure electric control box design. This structure not only ensures the mechanical stability of the electric control box, but also greatly enhances the electromagnetic of the electric control box. Shielding capability enhances the reliability of the electric control box. Simultaneously, the assembly and disassembly process of the electric control box is simplified.

As shown in Figures 1 and 2, a hyperspectral load electric control box system suitable for space environments includes a box body 1, a control bus motherboard 2 and a plurality of drawer-type circuit units 3; one end of the box body 1 is automatically A plurality of insertion ports 11 are provided from top to bottom, and the control bus motherboard 2 is provided in the box body 1 at the other end, and a connector 21 is provided on the control bus motherboard 2 at a position opposite to each insertion port 11; The number of the drawer-type circuit units 3 is adapted to the number of the insertion openings 11 , and there is a one-to-one correspondence, and the drawer-type circuit units 3 are arranged between the insertion openings 11 and the connectors 21 .

Each drawer circuit unit 3 includes a fixed frame 30, a circuit board functional module 4, an electrical connector 41 and an electrical connector 42; the circuit board functional module 4 is installed on the fixed frame 30, and the circuit board functional module 4 is installed on the Electrical connector 41 and electrical connector 42; the circuit board function module 4 is connected to the connector 21 through the electrical connector 41, and the circuit board function module 4 is connected to external equipment through the electrical connector 42; the fixed frame 30 is connected to the box body 1 The inner walls of the two side panels are connected by sliding components.

This application is a modular design. The control bus motherboard 2 is installed separately on the rear panel 14 of the box body 1. By testing the signal of the control bus motherboard 2, it is relatively easy to locate the fault and determine which layer of the circuit board is the function. If the module 4 fails, you can simply pull out the drawer-type circuit unit of this layer for maintenance and replacement. The replacement process will not involve other normal circuit board function modules 4, and the maintenance process is simple and easy to operate. The electric control box system of the present invention realizes the plug-in connection between the functional modules 4 of each circuit board and the control bus motherboard 2 by moving the drawer-type circuit unit into and out of the box body 1, and performs signal exchange and communication. The functional module 4 is separately designed as an independent structural unit, and the communication of multiple circuit board functional modules 4 can be realized in one box 1, and the communication between the functional modules of each layer can be realized in the control bus motherboard 2; it meets the requirements of the hyperspectral imager The installation layout, miniaturization and lightweight design of the electric control system; multiple circuit board function modules 4 are all installed in one box 1, which has good electromagnetic shielding performance.

The electric control box system of this embodiment includes 5 drawer-type circuit units 3. Correspondingly, one end of the box body 1 is provided with 5 insertion ports 11 arranged in parallel from top to bottom, and 5 drawer-type circuit units 3 are installed in 5 insertion ports. Inside port 11, circuit board function modules 4 installed on five drawer-type circuit units 3 are analog quantity acquisition board assembly 6, lower computer control board assembly 7, calibration power supply control board assembly 8, and motion drive control board assembly from top to bottom. The board assembly 9 and the imaging circuit plus the power-off control board assembly 10, the fixed frame 30 realizes the relative insertion or insertion with the inner wall of the two sides of the box body 1 through the sliding connection assembly, and then the five circuit board function modules 4 pass through and control the bus bus The board 2 is plugged and connected for signal exchange and communication. The five circuit board function modules 4 are structurally modularized. Each layer of functional circuit board modules is designed as an independent structural unit. Each circuit board function module 4 are designed with a separate fixed frame for fixed installation, and the 5-layer functional circuit board module is designed as a laminated structure. According to the connection relationship of the functional modules 4 of each layer of circuit boards, the stacked drawer assembly is carried out, and each layer is fastened to the side panels around the box body to finally meet the technical requirements of the interface data sheet and meet the conditions of use in the space environment.

In the structural design, the circuit board function module 4 includes a circuit board arranged on the fixed frame 30, a function module arranged on the circuit board, and the function module includes components; by rationally laying out the components on the circuit board function module 4, the quality Larger components and components that require structural heat dissipation should be placed as close as possible to the edge area where the vibration deformation of the circuit board is small.

The material of fixed frame 30 is 6061 duralumin alloy, comprises left side plate 31, right side plate 32, front side plate 34, rear side plate 35; Described left side plate 31, right side plate 32, front side plate 34, rear The side plates 35 are provided with threaded holes 311, and after the screws pass through the circuit board and the threaded holes 311 in turn, the circuit board is fixed on the fixed frame 30; the front side plate 34 is provided with a mounting hole 321 for the connector 21, Used to connect and fix the connector 21 .

Preferably, linear grooves are set on the left side plate 31 and the upper surface of the right side plate 32. The two ends of the circuit board are positioned on two linear grooves 312, and the two linear grooves 312 form the mounting surface of the circuit board. The circuit board has a position-limiting effect; the fixing frame 30 and the circuit board made of hard aluminum alloy material are connected into one body by 15 M3 screws to increase rigidity. Consider the large area of the circuit board and the dense layout of components. The fixed frame structure is designed with reinforcing ribs 33 distributed in a cross shape to further ensure structural rigidity. Each circuit board is inserted into two side plate linear grooves 312 of the fixed frame, and the circuit board and the rectangular frame body are connected by 4 M3 screws on the front face of the fixed frame and 6 M3 screws at the side plate positions.

The 5-layer circuit board function module 4 inside the electric control box system can be designed with a total of 14 external electrical connectors 42. Each electrical connector 42 is directly soldered and installed on the circuit board through pins, and is precisely controlled through the component size chain . The size of the box body 1 of the electric control box system is: 290mm×200mm×150mm.

By rationally designing the fixed frame, the side panels around the fixed frame, and the installation panel of the electrical connector, the support rigidity and matching accuracy of each layer of drawer-type circuit units are guaranteed, and the installation is convenient. Since the electric control box system is a structural system for circuit support and protection, it is necessary to avoid interference between the components of the circuit system and the fixed frame, and leave a safe displacement margin according to the design of the circuit system. In the structural design, layers are independently designed, but the fixed frame 30 of each layer and the side panels around the box body 1 are fixed in a drawer type, and the fixed frame 30 of each layer is a thin-walled frame structure. It is necessary to ensure that the fixed frame and box The matching accuracy and matching length of the side walls of the body 1 ensure the convenience and smoothness of drawing and pushing of the drawer-type circuit units 3 on each layer. To avoid the influence of cumulative errors after the installation of the five-layer drawer-type circuit unit 3, the design method of combined processing is adopted for the drawer-type circuit unit 3 of each layer and the surrounding side panels, and the drawer-type circuit unit 3 of each layer is assembled after processing to complete the combination The final matching processing can eliminate the influence of accumulated errors on installation. Since the product is used in the aerospace environment, it is necessary to analyze the environmental adaptability of the structural system and adopt reasonable and effective fixing methods to ensure that the control box has good adaptability to the mechanical environment.

thermal performance design

The thermal design of the electric control box system mainly includes natural cooling design, forced air cooling design, liquid cooling design, evaporative cooling, cold plate design, thermoelectric cooler design and heat pipe heat transfer design, etc. The principle is to control the temperature of all electronic components inside the product so that it is lower than the maximum temperature required for stable operation under the working conditions, so as to ensure the safety of normal operation of the product and the reliability of long-term operation.

According to the design results of the electric control box system, the thermal power consumption of the high-power components on the circuit board is 85W. In order to ensure the normal operation of the electric control box in orbit, the high-power components of the circuit board are placed as close as possible to the frame body of the fixed frame to shorten the heat conduction path, which is quickly guided to the box body 1 through the heat conduction plate, and then dissipated by the satellite compartment plate. The fixing frame 30 can not only fix the circuit board and prevent vibration damage, but also serve as a heat dissipation path for the circuit board. The fixed frame 30 and the circuit board are fixed by screws, and an L-shaped cooling plate 5 is designed between the fixed frame 30 and the high-power components on the circuit board. The material is T2 copper alloy, which has high thermal conductivity and can quickly conduct heat to the components. onto the fixed frame. On the one hand, the heat dissipation plate is in contact with the components through thermal conductive silicone grease, and is fixed with screws on the circuit board; on the other hand, the heat dissipation plate is well installed and fixed through the structural parts of the side plate, and conducts the heat generated by the components to the side plate of the box body 1 , to dissipate heat to the outside to ensure that the thermal environment inside the box 1 can meet the normal working requirements of the device. The heat dissipation plate is used as an extension of the installation area of the high-power chip on the circuit board. The heat generated by the high-power chip can be dissipated along the heat conduction path of the device→circuit board→L-shaped heat sink→fixed frame 30→the side plate of the box body 1 to prevent Rising temperatures affect sensitive chips on circuit boards.

On the other hand, in order to quickly dissipate heat from high-power devices, an active cooling system is designed. The two side plates of the box body 1 are plate-fin heat exchange structures for heat dissipation. The two side plates of the box body 1 can respectively form a circulating liquid cooling mode, and the two side plates can also be connected in series to connect with an external cooling source. A circulating liquid refrigeration mode is formed as a whole. The working principle of the cooling system: the external cooling source enters from the inlet of the outer wall of the side plate, flows through the inner plate-fin type of the side plate, and then flows out from the outlet. The characteristics of the plate-fin heat exchange mechanism are: High heat transfer efficiency, compact structure, and strong adaptability; fins are important components in the side plate of the box body 1, and the heat transfer process is mainly completed through the heat conduction of the fins and the convective heat exchange between the fins and the fluid. Therefore, there are many options for heat exchanger fins, such as rectangular fins, triangular fins, zigzag fins, louver fins, corrugated fins, pin fins, porous fins, etc. Triangular fins and rectangular fins are beneficial to enhance heat transfer because of their small equivalent diameters. Porous-shaped fins, the fins are perforated to continuously break the thermal boundary layer, which not only transitions to turbulent flow in advance, but also significantly strengthens the heat transfer in the transition zone and turbulent flow zone. Corrugated fins are used to change the geometry of the channel to induce boundary layer separation and form a secondary flow of cooling fluid to enhance heat transfer. Louvered fins and zigzag fins are both interrupted rib surfaces, which are characterized by discontinuing the wall, so that no thick boundary layer occurs, and a uniformly developed flow at each interruption (generally from the high-level flow area to the Low turbulence zone), so its heat transfer capacity is greatly improved. Under the condition of the same fin spacing, the surface heat transfer coefficient of this fin is 2 to 3 times larger than that of triangular fins and rectangular fins. Due to the large margin of flow resistance of the cold plate, louver fins and zigzag fins with good heat transfer effect are selected, preferably zigzag fins.

The two side plates of the box body 1 are used as supporting side plates, and are designed for cooling at the same time, while satisfying mechanical stability and active cooling, and each circuit board functional module 4 is designed with an L-shaped passive cooling plate, which greatly improves the internal heat. Excellent heat dissipation efficiency ensures a good thermal environment for the electronic system to work.

The support plates on both sides of the cabinet are designed with plate-fin cooling plates, and each circuit board is designed with an L-shaped heat dissipation plate to achieve efficient heat dissipation combining active heat dissipation and passive heat dissipation.

EMC design

In a complex space environment, in addition to the good electromagnetic compatibility of the electric control system itself, it is also required that the electric control box used to support the electric control system has good electromagnetic sealing. For this reason, electromagnetic shielding is carried out by lap joints among the components inside the electric control box, and measures such as setting the distance between fasteners reasonably and clamping the lap joints with sufficient pressure are taken to ensure that the shock and vibration Even under such harsh environmental conditions, the connection surfaces are still in good contact, and do not have a great impact on the electromagnetic shielding effect and the structural stability of the entire box body 1 .

In terms of electromagnetic shielding function, each circuit board functional module 4 adopts a double-layer isolation structure. In each layer of control board assembly, the circuit board is installed inside the fixed frame, and the surrounding of the fixed frame is aluminum alloy structural parts with a wall thickness of 3mm. After the circuit board is assembled, the first layer of closed surrounding shielding body is formed. The linear guide rails 313 on the left and right panels of the fixed frame cooperate with the guide grooves on the inner walls of the two side panels of the box body 1 to realize the insertion and insertion of the drawer type circuit unit relative to the box body 1. The linear guide rails 313 are provided with lateral Connect the fixing hole 314, and fix the linear guide rail 313 on the outer surface of the left side plate and the right side plate of the fixed frame through the screw through the lateral connection fixing hole, and connect the side plate with the inter-board flange at the front end of the drawer type circuit unit , through the combination connection of front plate 16, rear plate 14, upper plate 15, and lower bottom plate 17 to form a second layer of closed surrounding shielding body of the circuit board, with a wall thickness of 3mm. The first layer carries all electronic components to achieve spatial isolation from external devices. The second layer is formed by sealing the bottom plate 17 of the fixed frame 30 and the casing 1, the two side panels of the casing 1, the front plate 16, the rear plate 14, and the upper plate 15.

In order to ensure the lap resistance requirements of structural parts and ensure good electromagnetic shielding performance, the connection positions of structural connectors are treated with conductive oxidation surface, and more screw connections are set at the connection positions to ensure reliable connection and good contact. In addition, in order to ensure the grounding state of the product, an independent grounding stake 22 assembly is designed on the side plate of the box body 1. The material of the grounding stake 22 is T2 copper alloy, which has good electrical conductivity, and the surface of the grounding stake is gold-plated as a whole. treatment to further enhance the electrical conductivity. The external grounding wire is connected to the grounding pile 22, and is locked and fixed with two nuts, the nuts are of custom-made structure, the material is T2 copper alloy, and the surface is gold-plated. In addition, the flatness of the installation surface of the electric control box is designed to be: 0.1mm/100mm, the roughness of the installation surface is ≤3.2μm, and the surface is treated with primary color conductive oxidation to ensure good electrical conductivity of the installation surface.

The above is only a description of the preferred implementation of the present invention, and does not limit the technical solution of the present invention to this. Any known deformation made by those skilled in the art on the basis of the main technical concept of the present invention belongs to the protection of the present invention. technology category.

Claims (9)

1. a kind of bloom spectrum loading electric cabinet system suitable for space environment, it is characterised in that: total including cabinet (1), control Line motherboard (2) and multiple drawer type circuit units (3)；

Described cabinet (1) one end opens up multiple insert ports (11) from top to bottom, and the control bus is equipped in other end cabinet (1) Motherboard (2), the position opposite with each insert port (11) is equipped with connector (21) on the control bus master (2)；

The quantity of the drawer type circuit unit (3) is adapted with the quantity of the insert port (11), and is corresponded, drawer type Circuit unit (3) is arranged between insert port (11) and connector (21)；

The drawer type circuit unit (3) includes that fixed frame (30), circuit board functional module (4), electric connection (41) and electricity connect Plug-in unit (42)；

The circuit board functional module (4) is mounted on fixed frame (30), installs the electricity in circuit board functional module (4) and connects Head (41) and electrical connector (42)；

The circuit board functional module (4) is connect by electric connection (41) with the connector (21), circuit board functional module (4) It is connect by electrical connector (42) with external equipment；

It is connect between the fixed frame (30) and cabinet (1) both side plate inner wall by slide assemblies.

2. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 1, it is characterised in that: Each circuit board functional module (4) is equipped with L shape heat sink (5), and heat sink materials are T2 copper alloy.

3. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 1 or 2, feature exist In: the material of the fixed frame (30) is 6061 duralumin, hard alumin ium alloys comprising left plate (31), right side plate (32), front side board (34), back side panel (35)；

It is offered threaded hole (311) on the left plate (31) and right side plate (32), screw passes through circuit board functional module (4), after threaded hole (311), circuit board functional module (4) is fixed on fixed frame (30)；

The front side board (34) is equipped with the mounting hole (321) for installing electrical connector (42).

4. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 3, it is characterised in that: Cabinet (1) both side plate is plate fin heat-exchanging structure.

5. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 4, it is characterised in that: Reinforcing rib (33) are equipped between the left plate (31) and right side plate (32), between front side board (34) and back side panel (35).

6. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 5, it is characterised in that: The circuit board functional module (4) is analog acquisition board group part (6) or slave computer control panel component (7) or calibration power supply control Board group part (8) or movement drive control plate component (9) or imaging circuit add power-off control panel component (10).

7. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 6, it is characterised in that: The component that is slidably connected includes the linear guide (11) that left plate (31) and right side plate (32) outer wall is respectively set, is arranged in case The guide groove cooperated on body (1) both side plate inner wall with linear guide (11).

8. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 7, it is characterised in that: Linear guide (11) material is 6061 duralumin, hard alumin ium alloys.

9. a kind of bloom spectrum loading electric cabinet system suitable for space environment according to claim 1, it is characterised in that: The cabinet (1) is equipped with ground stud (22), and material is T2 copper alloy；

The ground stud (22) carries out surface gold-plating processing.