CN107577300A - A kind of comprehensive control equipment based on CPCI frameworks reinforces cabinet - Google Patents

Abstract

The present invention is a comprehensive measurement and control equipment reinforcement case based on CPCI architecture. High-strength aluminum alloy processing structure, and the upper cover, front panel, side panel, rear cover, upper air duct cover and lower air duct cover are all processed in one piece, and the box body is welded and formed after integral processing, with high structural rigidity Strength and durability, the external connector of the box and the backplane are electrically connected through the CPCS module and the TRM connector, and the external connector adopts a floating connector to eliminate the stress and poor contact of the connector caused by processing and assembly errors. The wire spring contact pair with small contact force solves the connection problem between the high-density multi-core TRM socket and the matching TRM plug. maintainability.

Description

A reinforced chassis for comprehensive measurement and control equipment based on CPCI architecture

technical field

The invention relates to the technical field of CPCI electronic equipment, in particular to a reinforced chassis of comprehensive measurement and control equipment based on CPCI architecture.

Background technique

CPCI is the abbreviation of Compact PCI, which is a high-performance industrial computer bus standard proposed by the International Federation of Industrial Computer Manufacturers in 1994. The electronic equipment chassis is the shell of electronic equipment, which mainly plays the role of installing, supporting, containing and protecting electronic components, circuit boards and electrical connectors, and protects them from various environmental influences and interferences. It is the basic structure to ensure the realization of electrical performance . The reinforced chassis is designed to adapt to various harsh environments such as vehicle, ship and airborne, and to make functional modules or systems work reliably and stably for a long time in this environment. The design of reinforced chassis for electronic equipment mainly includes structural shape design, thermal design, shock and vibration design, electromagnetic compatibility design, maintainability design, and three-proof design.

The board and module layout inside the strengthened CPCI electronic equipment chassis is more traditionally the ATR method. With the increase in the number of modules and external connectors, the number of connecting cables between the connector and the backplane can reach hundreds, and the layout of the connectors is small, the space of the chassis is small, the cable welding is difficult, and the welding quality is difficult to guarantee. Flexible The rigidity of the cable is poor, and it is easy to generate coupling when it is forced to vibrate, resulting in large displacement, which will damage the solder joints and make it difficult to meet the requirements of various harsh vibration environments.

Contents of the invention

The object of the present invention is to provide a comprehensive measurement and control equipment reinforcement chassis based on CPCI architecture to solve the above problems.

A reinforced chassis for comprehensive measurement and control equipment based on CPCI architecture, including a box body, the box body is connected with a top cover, a front panel, a side panel, a rear cover, an upper air duct cover and a lower air duct cover, and the upper cover passes through the inner The hexagonal screws are rigidly fixed to the box body, the side panels, the upper air duct cover and the lower air duct cover are rigidly connected to the box body through M3 countersunk screws, and the front panel and rear cover are fixedly connected to the box body through M4 countersunk screws , the side panel is rigidly connected with a fan box, and a fan is installed in the fan box through M3 countersunk screws, and a CPCI backplane is installed in the box, and a TRM plug is welded on the CPCI backplane, which is connected to the TRM plug. The corresponding TRM socket is welded on the CPCS module, and a floating connector is also welded on the CPCS module, and the CPCS module is rigidly connected to the upper cover, and the upper cover is rigidly fixed to the box body by hexagon socket head cap screws.

In one embodiment, an air channel plate is installed parallel to the inner side of the side panel, and the side panel, the lower air channel cover plate, the upper air channel cover plate and the air channel plate are rigidly connected to the box body by M3 countersunk screws.

In one of the embodiments, the box is provided with parallel upper guide rails and lower guide rails, and a CPCI main processing module, a CPCI function module, and a CPCI redundant power supply module are arranged between the upper guide rail and the lower guide rail, and the CPCI The main processing module, the CPCI function module, and the CPCI redundant power supply module are respectively connected to the upper guide rail and the lower guide rail through the cold guide plate, and the outer surfaces of the upper guide rail and the lower guide rail are milled with cooling fins.

In one of the embodiments, the CPCI main processing module, the CPCI function module, and the CPCI redundant power supply module are rigidly fixed to the box body through locking components, and the CPCI backplane is rigidly connected to the box body through reinforcing bars.

In one of the embodiments, the connections between the box body and the upper cover, the front panel, the rear cover and the upper air channel plate are bonded and embedded with silver-plated aluminum conductive rubber strips.

Using the above technology, the box is rigidly connected to the upper cover, front panel, side panel, rear cover, upper air duct cover and lower air duct cover, and the components connected to the box are made of high-strength aluminum alloy processing, and the upper cover, front The front panel, side panel, rear cover, upper air duct cover and lower air duct cover are all processed in one piece, and the box body is welded and formed after integral processing, which has high structural rigidity and durability. The external connector of the box body and The backplane is electrically connected through the CPCS module and the TRM connector. The external connector uses a floating connector to eliminate the stress and poor contact of the connector caused by processing and assembly errors. The wire spring contact pair with small contact force solves the problem of high Density multi-core TRM socket and matching TRM plug connection problem, the functional module adopts standard CPCI design, realizes no cable installation inside the whole machine, greatly improves the reliability and maintainability of the whole machine.

Description of drawings

Fig. 1 is a structural representation of an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of an embodiment of the present invention;

Fig. 3 is a schematic diagram of another angle decomposition structure of an embodiment of the present invention;

Fig. 4 is a schematic diagram of an internal cross-sectional structure of an embodiment of the present invention.

detailed description

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

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a comprehensive measurement and control equipment reinforcement chassis based on CPCI architecture includes a case body 1, and the case body 1 is connected to the upper cover 2, the front panel 3, the side panel 4, The rear cover 8, the upper air passage cover 9 and the lower air passage cover 6, the upper cover 2 is rigidly fixed to the box body 1 by hexagon socket head cap screws 19, the side panel 4, the upper air passage cover 9 and the lower air passage cover 6 is rigidly connected to the box body 1 through M3 countersunk screws 22, the front panel 3 and the rear cover 8 are fixedly connected to the box body 1 through M4 countersunk screws 21, and the fan box 5 is rigidly connected to the side panel 4, so A fan 18 is installed in the fan box 5 through M3 countersunk screws 22, and a CPCI backplane 11 is arranged in the box body 1. A TRM plug 12 is welded on the CPCI backplane 11, and a TRM socket corresponding to the TRM plug 12 13 is welded on the CPCS module 14, the floating connector 7 is also welded on the CPCS module 14, the CPCS module 14 is rigidly connected with the upper cover 2, and the upper cover 2 is connected to the box body 1 by hexagon socket head cap screws 19 rigidly fixed. The box body 1 is rigidly connected with the upper cover 2, the front panel 3, the side panel 4, the rear cover plate 8, the upper air channel cover plate 9 and the lower air channel cover plate 6, and the components connected to the box body 1 are made of high-strength aluminum alloy processing, and The upper cover 2, the front panel 3, the side panel 4, the rear cover 8, the upper air channel cover 9 and the lower air channel cover 6 all adopt the overall processing method, and the box body 1 adopts the overall processing and welding forming method, which has a high structural rigidity. Strength and durability, the external floating connector 7 and the backplane are electrically connected through the CPCS module 14 and the TRM socket 13, and the floating connector 7 is used to eliminate the stress and poor contact of the connector caused by processing and assembly errors. The wire spring contact pair with small force solves the connection problem between the high-density multi-core TRM socket 13 and the matching TRM plug 12. The functional module adopts the standard CPCI design, which realizes the installation without cables inside the whole machine and greatly improves the reliability of the whole machine and maintainability.

The floating connector 7 and the TRM socket 13 are respectively welded on the CPCS module 14 to form a CPCS assembly, and are rigidly fixed to the upper cover 2 through the M3 combination screw 20, and the upper cover 2 is rigidly fixed to the box body 1 through the hexagon socket head cap screw 19, and at the same time The connection between the TRM plug 12 and the TRM socket 13 is realized, and the electrical connection between the CPCI backplane 11 and the CPCS module 14 is completed. The front panel 3 and the rear cover 8 are connected and fixed on the cabinet 1 through M4 countersunk screws 21, and the installation of the cabinet and the cabinet or the table is realized by using the four installation lugs on the cabinet 1.

In one of the embodiments, an air channel plate 10 is installed parallel to the inner side of the side panel 4, and the side panel 4, the lower air channel cover plate 6, the upper air channel cover plate 9 and the air channel plate 10 are connected to the box by M3 countersunk head screws. Body 1 is rigidly connected. The side panel 4, the lower air channel cover 6, the upper air channel cover 9 and the air channel plate 10 are rigidly connected to the box body 1 through M3 countersunk screws 22 to form the main air channel for forced convection heat dissipation of the chassis, and the fan 18 is installed on the On the fan box 5, the fan box 5 and the side panel 4 are rigidly connected together to form a relatively independent complete air duct of the chassis.

In one of the embodiments, the box body 1 is provided with parallel upper guide rails and lower guide rails, and a CPCI main processing module 15, a CPCI function module 16, and a CPCI redundant power supply module are arranged between the upper guide rails and the lower guide rails. 17, the CPCI main processing module 15, the CPCI function module 16, and the CPCI redundant power supply module 17 are respectively connected to the upper guide rail and the lower guide rail through the cold guide plate, and the outer surfaces of the upper guide rail and the lower guide rail are all milled Has cooling fins. The heat generated by the CPCI main processing module 15, the CPCI function module 16, and the CPCI redundant power supply module 17 is respectively conducted to the upper guide rail and the lower guide rail of the cabinet 1 through the cold guide plate, and the outer surfaces of the upper guide rail and the lower guide rail are milled with cooling fins , increase the heat exchange area with the forced convection airflow, in the independent air duct formed by the box body 1, the lower air duct cover plate 6, and the upper air duct cover plate 9, exchange heat with the forced air flow generated by the fan 18 and dissipate it to the ambient heat sink At the same time, it realizes the lightweight design requirements.

A two-cavity structure is formed inside the box body 1. The external open cavity is a forced convection heat dissipation cavity, and the internal electrical component installation cavity is a fully sealed design, which provides effective protection for electrical components against harsh environments. The heat of the internal heating chip and components is uniform. Conducted to the box body 1 through the heat conduction plate, and exchange heat with the atmospheric heat sink through the heat dissipation cavity outside the box body 1. The electrical boards in the chassis are equipped with independent cold conduction plates, and adopt a vertical layout from bottom to top to maintain a natural environment. The direction of convection is consistent, and the main processing module and other high-power consumption board cold plates are equipped with heat dissipation fins to increase the heat dissipation area and improve heat dissipation efficiency. The open cavity is composed of an upper cover 2, a front panel 3, a side panel 4, a rear cover 8, an upper air channel cover 9 and a lower air channel cover 6. The airtight electrical box 1 includes an upper guide rail, a lower guide rail, a CPCI main processing module 15 , a CPCI function module 16 and a CPCI redundant power supply module 17 .

In one of the embodiments, the CPCI main processing module 15, the CPCI function module 16, and the CPCI redundant power supply module 17 are rigidly fixed to the box body 1 through a locking assembly, and the CPCI backplane 11 is connected to the CPCI backplane 11 through a reinforcing strip 24. The box body 1 is rigidly connected. Reinforcing bar 24 strengthens the rigid connection between CPCI backplane 11 and box body 1, keeps the PCB board in CPCI main processing module 15, CPCI function module 16, CPCI redundant power supply module 17, CPCI backplane 11 vertically fixed in the chassis, The natural frequency of the PCB is increased, the deformation of the PCB is reduced, and its shock and vibration resistance performance is improved. The CPCS module 14 improves its rigidity and improves its shock and vibration resistance performance by increasing the thickness of the printed board, the high-density mounting hole spacing and the rigid connection with the upper cover 2.

In one of the embodiments, aluminum silver-plated conductive rubber strips 23 are bonded and embedded at the joints between the box body 1 and the upper cover 2 , the front panel 3 , the rear cover 8 and the upper air channel plate 9 . The aluminum-plated silver-plated conductive rubber strip 23 bonded and embedded increases sealing performance and electromagnetic overlap, which can improve the protection level and electromagnetic compatibility performance of the chassis.

The above is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications made by those skilled in the art within the field of the present invention are covered by the patent scope of the present invention Inside.

Claims (5)

1. A comprehensive measurement and control equipment reinforcement chassis based on CPCI architecture, comprising a casing, characterized in that: the casing is connected with a loam cake, a front panel, a side panel, a rear cover, an upper air duct cover and a lower air duct cover, The upper cover is rigidly fixed to the box body by hexagon socket head cap screws, the side panel, the upper air channel cover plate and the lower air channel cover plate are rigidly connected to the box body by M3 countersunk screws, and the front panel and rear cover are connected by M4 countersunk head screws Fixedly connected to the box body, the side panel is rigidly connected with a fan box, and a fan is installed in the fan box through M3 countersunk screws, and a CPCI backplane is installed in the box, and a TRM is welded on the CPCI backplane Plug, the TRM socket corresponding to the TRM plug is welded on the CPCS module, and a floating connector is also welded on the CPCS module, and the CPCS module is rigidly connected with the upper cover, and the upper cover is connected to the box by a hexagon socket head screw. The body is rigidly fixed. 2. According to claim 1, a kind of comprehensive measurement and control equipment reinforcement chassis based on CPCI architecture is characterized in that: the inside of the side panel is provided with an air duct plate in parallel, and the side panel, the lower air duct cover plate, and the upper air duct cover The board and the air duct board are rigidly connected to the box body through M3 countersunk screws. 3. according to claim 1, a kind of comprehensive measurement and control equipment reinforcement case based on CPCI framework is characterized in that: described casing is provided with parallel upper guide rail and lower guide rail, and CPCI is provided between described upper guide rail and lower guide rail. The main processing module, the CPCI function module, and the CPCI redundant power supply module, the CPCI main processing module, the CPCI function module, and the CPCI redundant power supply module are respectively connected to the upper guide rail and the lower guide rail through the cold guide plate, and the upper The outer surfaces of the guide rail and the lower guide rail are milled with cooling fins. 4. according to claim 3, a kind of comprehensive measurement and control equipment reinforcement chassis based on CPCI architecture is characterized in that: said CPCI main processing module, CPCI function module, CPCI redundant power supply module are all rigidly fixed by locking assembly and box body , the CPCI backplane is rigidly connected to the box body through reinforcing strips. 5. According to claim 1, a reinforced chassis for integrated measurement and control equipment based on CPCI architecture is characterized in that: the joints between the box body and the upper cover, the front panel, the rear cover and the upper air duct plate are bonded and embedded Aluminum silver-plated conductive rubber strip.