CN218587194U

CN218587194U - CPCI backboard

Info

Publication number: CN218587194U
Application number: CN202222392144.9U
Authority: CN
Inventors: 肖健华; 罗述珍; 康仙慧
Original assignee: Zte System Technology Co ltd
Current assignee: Zte System Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-03-07
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to the technical field of electronic equipment, and discloses a CPCI (compact peripheral component interconnect) backboard, which comprises a core exchange board slot position module, a system main control board slot position module, a service access board slot position module, a power supply slot position module and a circuit board; each slot position module is arranged on the circuit board; the core exchange board slot position module is respectively connected with the system main control board slot position module and the service access board slot position module through IP communication; the system main control board slot module is respectively connected with the service access board slot module and the core exchange board slot module through IIC and/or UART; the slot modules of the core exchange board, the system main control board and the service access board are in a star topology structure, and the star topology structure takes the slot modules of the core exchange board as the center. The CPCI back panel replaces the traditional PCI bus communication mode with the mode of IP/IIC/UART communication and management, and can support the access of functional modules of various Ethernet protocols.

Description

CPCI backboard

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a CPCI backplate.

Background

Compact Peripheral Component Interconnect (CPCI) is a bus interface standard proposed by international Industrial Computer manufacturers association (PCI Industrial Computer manufacturers' groups, PICMG for short) in 1994, and is a modified technology based on PCI technology, wherein a traditional PCI bus is still adopted as a communication mode, a chassis structure with a pluggable board card is adopted as a chassis structure, a traditional PCI golden finger connection mode is abandoned, pin hole connectors with 2mm spacing are adopted, a crimping process is adopted, the system reliability is further improved, and the load carrying capacity of the system is increased. The CPCI has the characteristics of hot plug and high reliability, is widely applied to industries with diversified functional requirements and higher reliability requirements, such as the rail transit industry and the like, and various monitoring devices are unusually numerous and diverse in types.

At present, various types of access subboards need to support a PCI interface to share monitored information through a PCI bus. For an access module which does not support a PCI interface, a PCI bridge is often added and a related protocol conversion software driver is developed to access the access module into the CPCI system. In the common CPCI architecture backplane communication, the reliability and compatibility of the system are often reduced because the service module does not support the PCI bus protocol.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a CPCI backplate aims at solving because of the business module does not support the unable compatible technical problem of PCI bus agreement.

In order to achieve the above object, the present invention provides a CPCI backplane, which comprises a core exchange board slot module, a system main control board slot module, a service access board slot module, a power supply slot module and a circuit board; the core exchange board slot position module, the system main control board slot position module, the service access board slot position module and the power supply slot position module are arranged on the circuit board.

The core exchange board slot position module is respectively connected with the system main control board slot position module and the service access board slot position module through IP communication; the system main control board slot module is respectively connected with the service access board slot module and the core exchange board slot module through IIC, and/or the system main control board slot module is respectively connected with the service access board slot module and the core exchange board slot module through UART; the core exchange board slot modules, the system main control board slot modules and the service access board slot modules are in a star topology structure, and the star topology structure takes the core exchange board slot modules as the center.

Optionally, in an embodiment, the slot positions of the core switch board slot position module, the system main control board slot position module, the service access board slot position module, and the power supply slot position module are respectively formed by two CPCI connectors, and the CPCI connectors are installed and fixed on the circuit board.

Optionally, in an embodiment, the slot positions of the system main control board slot position module, the service access board slot position module, and the power supply slot position module are respectively disposed at two sides of the slot position of the core switch board slot position module.

Optionally, in an embodiment, the CPCI backplane further includes a core switch module, the core switch module is inserted into the slot of the slot module of the core switch board, and the core switch module is provided with a 1Gbps data communication channel for providing the slot of the slot module of the service access board; the slot position of the core switch board slot position module is connected with the slot position of the system main control board slot position module through a data communication channel with the speed of 1Gbps and/or 10 Gbps.

Optionally, in an embodiment, the CPCI backplane further includes two system main control boards, two slot modules of the system main control boards are provided, a system main control board is respectively inserted into two slots of the two slot modules of the system main control boards to form a dual redundancy structure, a system service data backup connection channel is formed between the two slots of the two slot modules of the main control boards through an ethernet interface, and a system configuration data backup connection channel is formed by the two slots of the two slot modules of the main control boards through a UART interface; and an interaction channel of a heartbeat signal, a working state signal and a board reset signal is arranged between the slot positions of the two system main control board slot position modules.

Optionally, in an embodiment, an IIC control path and a UART control path are disposed between the slot of the system main control board slot module and the slot of the service access board slot module.

Optionally, in an embodiment, there are two power slot modules, where the two power slot modules form a dual-redundancy structure, and the power slot modules include a dual-redundancy power supply mode and a current-balancing power supply mode.

Optionally, in an embodiment, the CPCI backplane further includes a power module, the power module is inserted into the slot of the power slot module, and the power module is 220V alternating current.

Optionally, in an embodiment, the CPCI backplane further includes a power module, the power module is inserted into the slot of the power slot module, and the power module is a direct current of 110V, 48V, or 24V.

Optionally, in an embodiment, eleven service access board slot modules are provided; and/or a service access board is inserted into a slot position of the slot position module of the service access board; the service access board comprises one or more of a CPCI size standard interface, an Ethernet interface, an IIC interface and a UART interface.

In the technical scheme provided by the utility model, the mode of using IP data communication, IIC/UART management to replace traditional PCI bus communication, the transmission bandwidth is higher, the time delay is smaller, the interface mode is more mature, and the access of various protocol modules is easy to realize; and according to the development status of software and hardware such as Ethernet, IIC/UART and the like, the service data stream and the management data stream of the communication system are separated, and a mode that the CPCI back plate uses IP/IIC/UART communication and management to replace the traditional PCI bus communication mode is provided, so that various functional modules supporting the Ethernet protocol can be seamlessly accessed into the back plate. Due to the maturity and universality of the Ethernet interface, the reliability of the application is not influenced by external factors, the running reliability of the whole back plate is high, and the back plate can be applied to occasions such as railways, airports, long-distance bus stations and the like with high reliability requirements, diversified functions, wide service access and the like.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

Fig. 1 is a schematic diagram of star-type ethernet service data communication according to an embodiment of the CPCI backplane of the present invention;

fig. 2 is a schematic diagram of the hot standby interaction of the dual redundant system main control board according to an embodiment of the CPCI backplane of the present invention;

fig. 3 is a schematic diagram of IIC and UART service management of the dual redundant system main control board according to an embodiment of the CPCI backplane of the present invention.

1, a circuit board; 2. a core switch module; 3. a system main control board; 4. a service access board; GE. A 1Gbsp rate data communication channel; XGE, 10Gbsp rate data communication channel.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implying any number of indicated technical features. Thus, unless stated otherwise, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; the meaning of "plurality" is 2 or more than 2. The terms "comprises" and any variations thereof, are intended to cover a non-exclusive inclusion, which may have the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or combinations thereof.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between 2 elements. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to fig. 3, an embodiment of the present application discloses a CPCI backplane, which includes a core switch board slot position module, a system main control board slot position module, a service access board slot position module, a power slot position module, and a circuit board 1, where the core switch board slot position module, the system main control board slot position module, the service access board slot position module, and the power slot position module are mounted and fixed on the circuit board 1; the core exchange board slot position module is respectively connected with the system main control board slot position module and the service access board slot position module through IP communication; the system main control board slot position module is respectively connected with the service access board slot position module and the core exchange board slot position module through IIC interfaces, and is also connected through a UART interface; the core exchange board slot position module, the system main control board slot position module and the service access board slot position module are connected in a star topology structure connection mode, wherein the star topology structure takes the core exchange board slot position module as a center. In the application, the CIPI back plate does not adopt the traditional standard PCI bus topology, but adopts a star topology taking a core exchange plate slot position module as the center, adopts an open type back plate signal mode of IP/IIC/UART communication and management to replace the traditional PCI bus communication mode, so that various functional modules supporting the Ethernet protocol can be seamlessly accessed into the application, and in the CPCI back plate, a mature Ethernet interface is selected as a system service data channel, a mature low-cost IIC/UART interface is selected as a system service management channel, data and management are separately processed, so that the system service processing is clearer, and the working stability of the system is ensured. Due to the maturity and universality of the Ethernet interface, the overall reliability of the back plate is not affected by external factors, and the operation reliability of the back plate is high. The communication and interaction between the slots are realized through PCB routing on the circuit board 1, wherein the core exchange board slot module is a 3U CPCI-sized core exchange board slot module.

The slot positions of the core exchange board slot position module, the system main control board slot position module, the service access board slot position module and the power supply slot position module are respectively composed of two CPCI connectors, and the CPCI connectors are installed and fixed on the circuit board 1. Wherein the CPCI connectors are all standard CPCI connectors.

Generally, the slot of the core switch board slot module is arranged in the middle of the circuit board 1, and the slots of the system main control board slot module, the service access board slot module and the power supply slot module are arranged at two sides of the slot of the core switch board slot module. The core switch board slot modules are used for interacting and processing information of each slot module, and the slots of the core switch board slot modules are arranged in the middle of the circuit board 1, so that circuits among the slot modules can be connected conveniently, and PCB routing design optimization on the circuit board 1 is facilitated. When the number of the slot positions of the system main control board slot position module, the service access board slot position module and the power supply slot position module is even, the number of the slot positions at two sides of the slot position of the core exchange board slot position module is the same; however, when the number of the slot positions of the system main control board slot position module, the service access board slot position module and the power supply slot position module is odd, the number of the slot positions at one side of the slot positions of the core exchange board slot position module is one more than that at the other side.

In an embodiment, the CPCI backplane further includes a core switch module 2, a system main control board 3, a service access board 4, and a power module. The core switch module 2 is inserted in the slot position of the core switch board slot position module, the system main control board is inserted in the slot position of the system main control board slot position module, the power supply module is inserted in the slot position of the power supply slot position module, and the service access board 4 is inserted in the slot position of the service access board slot position module. The number of the system main control board 3 and the number of the system main control board slot modules are respectively two, the number of the service access board 4 and the number of the service access board slot modules are eleven, and the number of the power supply slot modules and the number of the power supply modules are also two.

In this embodiment, the core switch module 2 is provided with 1Gbps speed data communication channels (GE 0-GE3 and GE6-GE 12) provided for eleven slot positions of the service access board slot position module, and the core switch module 2 provides 1Gbps speed data communication channels (GE 4 and GE 5) and 10Gbps speed data communication channels (XGE 0 and XGE 1) for the slot positions of the two system main control board slot position modules, respectively, that is, the slot positions of the core switch board slot position module and the slot positions of the system main control board slot position module are connected through 1Gbps and/or 10Gbps speed data communication channels.

The slot position modules of the two system main control boards support dual redundancy, and the two system main control boards 3 are in a dual redundancy relationship. Referring to fig. 2, in the embodiment, a 1Gbps system service data backup channel is arranged between two slot modules of the system main control board, and a system configuration data backup channel of an uart interface is arranged between the two slot modules of the system main control board; and a board card working state signal (PRE) interaction channel, a board card pulse heartbeat signal (HBT) interaction channel and a board card Reset Signal (RST) interaction channel are arranged between the slot positions of the slot position modules of the two system main control boards. According to the CPCI back board, only one system main control board 3 works as a main module at the same time, the two main control boards can be backed up mutually, when the working state of one system main control board 3 is abnormal, the master control board can be seamlessly switched to the other system main control board 3, service interruption is avoided, and the stability and the reliability of the CPCI back board are guaranteed.

Referring to fig. 3, the system main control board 3 and the service access boards 4 are in a one-master-multi-slave relationship, wherein an IIC control path and a UART control path are respectively disposed between a slot of the system main control board slot module and the service access board slot module, and the system main control board 3 obtains the operating state information of each service access board 4 through the IIC control path and the UART control path. The service access board 4 serves as a function access interface of the CPCI backplane of the present application, and the service access board 4 includes one or more of a CPCI size standard interface, an ethernet interface, an IIC interface, and a UART interface, and can flexibly configure the interface type of the service access board 4 according to actual requirements, so that the CPCI backplane of the present application supports access of function modules of various ethernet protocols.

In this embodiment, two power slot modules form a dual redundancy structure, and the power slot modules support a dual redundancy power supply mode and a current balance power supply mode. The power supply module is a standard CPCI power supply, the standard CPCI power supply can be an alternating current power supply or a direct current power supply, and the general power supply specification can be 220V alternating current (AC 220), or one of 110V direct current (DC 110V), 48V direct current (DC 48V) or 24V direct current (DC 24V). The two standard CPCI power supplies are mutually redundant and have the same specification, and the normal use of the CPCI back plate is not influenced under the condition that any power supply module of the power supply module fails due to the double-redundant power supply slot position arrangement. And realizes uninterrupted power switching when the CPCI power supply is replaced.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims

1. A CPCI back panel is characterized by comprising a core exchange board slot position module, a system main control board slot position module, a service access board slot position module, a power supply slot position module and a circuit board; the core exchange board slot position module, the system main control board slot position module, the service access board slot position module and the power supply slot position module are arranged on the circuit board;

the core exchange board slot position module is respectively connected with the system main control board slot position module and the service access board slot position module through IP communication;

the system main control board slot module is respectively connected with the service access board slot module and the core exchange board slot module through IIC, and/or the system main control board slot module is respectively connected with the service access board slot module and the core exchange board slot module through UART;

the core exchange board slot modules, the system main control board slot modules and the service access board slot modules are in a star topology structure, and the star topology structure takes the core exchange board slot modules as the center.

2. The CPCI backplane according to claim 1, wherein the slots of the core switch board slot module, the system main control board slot module, the service access board slot module and the power supply slot module are each formed by two CPCI connectors, and the CPCI connectors are mounted and fixed on the circuit board.

3. The CPCI backplane according to claim 2, wherein the slots of the system main control board slot module, the service access board slot module, and the power slot module are respectively disposed at two sides of the slot of the core switch board slot module.

4. The CPCI backplane of claim 1, further comprising a core switch module plugged into a slot of the core switch board slot module, wherein the core switch module is configured to provide a 1Gbps rate data communication channel for the slot of the service access board slot module; the slot position of the core switch board slot position module is connected with the slot position of the system main control board slot position module through a data communication channel with the speed of 1Gbps and/or 10 Gbps.

5. The CPCI backplane of claim 1, further comprising two system main control boards, wherein two slot modules of the system main control boards are inserted into one system main control board to form a dual redundancy structure, a system service data backup connection channel is formed between the slots of the two system main control board slot modules through an Ethernet interface, and a system configuration data backup connection channel is formed between the slots of the two main control board slot modules through a UART interface;

and an interaction channel of a heartbeat signal, a working state signal and a board reset signal is arranged between the slot positions of the two system main control board slot position modules.

6. The CPCI backplane of claim 5, wherein an IIC control path and a UART control path are arranged between the slot of the system main control board slot module and the slot of the service access board slot module.

7. The CPCI backplane of claim 1, wherein there are two power slot modules, and the two power slot modules form a dual redundant structure, and the power slot modules comprise a dual redundant power supply mode and a current balancing power supply mode.

8. The CPCI backplane of claim 7, further comprising a power module that plugs into a slot of the power slot module, the power module being 220V AC.

9. The CPCI backplane of claim 7, further comprising a power module that plugs into a slot of the power slot module, the power module being 110V, 48V, or 24V DC.

10. The CPCI backplane according to claim 1, wherein eleven service access slot modules are provided;

and/or, a service access board is inserted into the slot position of the slot position module of the service access board; the service access board comprises one or more of a CPCI size standard interface, an Ethernet interface, an IIC interface and a UART interface.