Case hard connection structure based on VPX rear IO board

Abstract

The invention provides a case hard connection structure based on a VPX rear IO board. A rear IO board of an exchange slot position is used as an adapter plate, and a special adapter slot position forinternal interconnection is not designed, so the number of modules installed in a limited space is increased, and the problems of infirm connection stability, poor impedance continuity and difficult installation and maintenance caused by a cable interconnection mode can also be avoided; a modular design is adopted, so the mounting difficulty is reduced; a large number of network differential signals needing to be externally connected are directly led out from the rear IO board, no wiring processing is carried out on the backboard, and the quality of the provided network signals is better; thesize of the rear IO board is flexibly designed according to the size of equipment to complete internal interconnection; a standard VPX connector is used for hard connection, and high-speed signals canbe switched over; and the hard connection structure can also avoid high production and maintenance cost caused by the connection mode of the flexible printed board.

Description

technical field [0001] The invention belongs to the technical field of computers, and in particular relates to a chassis hard connection structure based on a VPX rear IO board. Background technique [0002] VPX is a series of standards formulated by the VITA organization, including basic specifications, mechanical structures, signal definitions, etc. According to the standard, VPX equipment is composed of a backplane and a front card functional module. The functional module is plugged into the front of the backplane, and an optional rear IO board is plugged into the back of the backplane. In the application, in addition to integrating the backplane and functional modules, the VPX equipment also needs to lead the signals of each functional module to the external connector of the equipment to complete the internal connection. The internal connection of the chassis can be divided into three types: cable interconnection, flexible printed board interconnection and hard connectio...

AI Technical Summary

Problems solved by technology

Cable interconnection refers to the use of cables to connect the connectors of aviation plugs and backplanes; flexible printed board interconnection refers to the use of flexible printed The connection board and connector connect the backplane and the aviation plug-in board. Although the advantages of the hard connection method are stable connection, continuous impedance, and simple installation, the disadvantage is that the design is complicated and the processing accuracy is high.

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