CN109933550B - Redundant universal bus system supporting user-defined signals - Google Patents
Redundant universal bus system supporting user-defined signals Download PDFInfo
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Abstract
The invention discloses a redundant general bus system supporting a user-defined signal, which comprises at least three groups of sub-networks with the same function, wherein the bus relates to a functional module bus interface, a backboard bus slot interface and a PCB printed circuit. The backboard provides at least three groups of slot positions with the same configuration, and different functional modules following the same standard can be inserted into any slot position; the modules are connected through the backplane slot positions and the buses, each module bus interface comprises three parts with completely same functions, and each part is respectively connected with a corresponding sub-network to form a system comprising power supply, power distribution, communication, calculation and input and output switching value signal function modules. The redundant general bus system provided by the invention provides three or more redundant communication and control buses, provides a self-defined signal interface, can meet the requirements of complex and high-integration combined electronic instruments, improves the stability of the system, and can adapt to severe electromagnetic environment and thermodynamic environment.
Description
Technical Field
The invention belongs to the technical field of universal buses, and particularly relates to a redundant universal bus system supporting a user-defined signal.
Background
The bus is an information transmission line connecting the respective components so that the respective components share a transmission medium, and is generally a transmission harness composed of wires, and can be divided into an internal bus, a system bus, and a communication bus. The internal bus refers to a bus for connecting the respective elements inside the chip or the like. A system bus refers to a bus that connects components within the system. The external bus is a bus between systems or with other systems. The system bus is divided into three types, namely, a data bus db (data bus), an address bus ab (address bus), and a control bus cb (control bus), and the system bus is also referred to as a bus in a general sense.
At present, buses in a system often have protocols of multiple standards, which is of great significance to module interconnection adopting the same standard. The bus adopted by the system at present is a single communication bus, so that signals such as power supply and other IO signals are not restricted, self-definition is not supported, only the communication universality is supported, the requirements of most actual complex working conditions are not met, and the expansibility and the flexibility are insufficient. The existing VITA76 provides a dual redundancy scheme based on module redundancy, and the dual redundancy design is realized by a complete backup mode of slot positions, a back plate and modules, but the slot positions and the bus resources are more serious in consumption, large in size, unobvious in weight reduction and more in optimized space.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a redundant general purpose bus system supporting a custom signal. The technical problem to be solved by the invention is realized by the following technical scheme:
a redundant universal bus system supporting custom signals, comprising:
at least three groups of parallel sub-networks with the same function, wherein each group of sub-networks respectively corresponds to one group of connector components; the sub-networks with the same function are symmetrically distributed on the backboard, slot positions butted with the connector assembly are configured on the backboard, the functional modules are inserted into the slot positions of the backboard, and the sub-networks are used for realizing the connection of the functional modules; the plurality of functional modules comprise a power supply module, a communication module, a universal signal module and a self-defined signal module, and the bus interface of each functional module is connected with at least three groups of sub-networks with the same function.
In one embodiment of the invention, each transmission line parallel to the sub-network comprises: power lines, optical fibers, coaxial cables, twisted pair or differential signal communication lines, analog signal lines, and custom lines.
In one embodiment of the invention, each connector assembly comprises:
the first connecting unit is used for being inserted into the power supply module and the communication module so as to provide power and realize a communication function;
the second connecting unit is used for being inserted into the general signal module or the self-defined signal module so as to realize the general function and the self-defined function of a user;
a connector connects the first connection unit, the second connection unit and the parallel sub-network.
In one embodiment of the invention, the connectors include at least three sets of RT2 series connectors or CPCI connectors.
In one embodiment of the present invention, the first connection unit includes:
the power supply module comprises at least three groups of power supply parts, is connected with the parallel sub-network through the connector and is used for being inserted into the power supply module to provide at least three sets of redundant power supplies for all other functional modules;
comprises at least three groups of communication sites, which are connected with the parallel sub-networks through the connectors and are used for providing redundant communication among all modules on the bus.
In one embodiment of the present invention, the connector assembly comprises:
three key pins provided by the functional module and three key holes provided by the backplane connector assembly; each key hole is provided with an misplug-preventing guide surface, and reliable correct connection is realized through different angles of the guide surfaces.
In one embodiment of the present invention, the second connection unit includes:
a plurality of common signal contacts for connecting said functional module and said parallel sub-network via said connector;
a plurality of custom signal contacts for connecting the functional module and the parallel sub-network through the connector.
In one embodiment of the invention, the universal signal contact comprises:
and the universal signal interface is used for electrically connecting the functional module and the connector.
In one embodiment of the present invention, the custom signal contact comprises:
and the user-defined signal interface is used for electrically connecting the functional module and the connector.
The invention has the beneficial effects that:
the redundant general bus system provided by the invention provides more than three redundant communication and control buses, provides a self-defined signal interface, can meet the requirements of complex and high-integration combined electronic instruments, improves the stability of the system, and can adapt to severe electromagnetic environment and thermodynamic environment.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic connection diagram of a redundant general purpose bus system supporting custom signals according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a redundant general purpose bus system supporting custom signals according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of slot and module docking provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an 8-slot redundant universal bus device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example one
Referring to fig. 1 and fig. 2, fig. 1 is a connection diagram of a redundant general bus system supporting a custom signal according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a redundant general purpose bus system supporting custom signals according to an embodiment of the present invention;
an embodiment of the present invention provides a redundant general bus system supporting a custom signal, as shown in fig. 1, including:
at least three groups of functionally identical parallel sub-networks (sub-networks/switching networks), each group of sub-networks corresponding to a respective group of connector assemblies; the sub-networks with the same function are symmetrically distributed on the backboard, slot positions butted with the connector assembly are configured on the backboard, the functional modules are inserted into the slot positions of the backboard, and the sub-networks are used for realizing the connection of the functional modules; the plurality of functional modules comprise a power supply module, a communication module, a universal signal module and a self-defined signal module, and the bus interface of each functional module is connected with at least three groups of sub-networks with the same function
Specifically, the system is composed of a backboard containing a redundant bus with a plurality of slot positions and a redundant functional module. Each slot position is composed of three groups of modules with the same function, the slot positions are connected through a backboard printed board circuit, and a plurality of slot positions form a complete bus network. The functional module is provided with a connector corresponding to the redundant bus of the backboard.
The backboard slot position is used for inserting a plurality of functional modules to realize the functions of the functional modules; the plurality of functional modules comprise a power supply module, a communication module, a universal signal module and a self-defined signal module;
and each switching network is used for connecting the slot position to realize the connection of the functional module group and the outside.
Specifically, at least three functional module groups adopt the same structure, wherein each functional module group is connected with the parallel sub-network, each functional module group can be connected with the outside through the parallel sub-network, and different functional modules are inserted into the functional module groups to realize different functions of the system. The parallel switching networks adopt the same structure, and preferably, the transmission medium of each parallel sub-network comprises: the device comprises a power line, optical fibers, a coaxial cable, a twisted pair, a VLAN (virtual local area network), a VPN (virtual private network), a protocol converter, a wireless bridge, a differential signal communication line, an analog signal line and a custom line, wherein the custom line can be customized.
The parallel exchange network can adopt star structure, also can adopt ring and bus structure, in order to simplify the system, the bus topology network is optimized.
At least two functional module groups in the at least three functional module groups provided by the system operate, and when at least one parallel sub-network is unblocked, the system can normally work, so that the stability of the system is improved, and the system can adapt to severe electromagnetic environment and thermodynamic environment.
Further, each connector assembly includes:
the first connecting unit is used for being inserted into the power supply module and the communication module so as to provide power and realize a communication function;
the second connecting unit is used for being inserted into the general signal module or the self-defined signal module so as to realize the general function and the self-defined function of a user;
a connector connects the first connection unit, the second connection unit and the parallel sub-network.
Specifically, each connector assembly comprises a first connection unit and a second connection unit, and the first connection unit and the second connection unit are connected with the backplane in a plugging mode so as to be connected with three parallel switching networks. The first connecting unit is used for power supply and communication, and when a power supply module is inserted into any slot position, power is supplied to all the functional module groups; when any slot is inserted into a communication module, all modules can communicate with it. Preferably, the connector comprises an RT2 series connector or a CPCI connector or other high density rectangular connector.
Further, as shown in fig. 2, the first connection unit includes:
the power supply module comprises at least three groups of power supply parts, is connected with the parallel sub-network through the connector and is used for being inserted into the power supply module to provide at least three sets of redundant power supplies for all other functional modules;
comprises at least three groups of communication sites, which are connected with the parallel sub-networks through the connectors and are used for providing redundant communication among all modules on the bus.
Specifically, the first connection unit includes at least three power supply slots to accommodate insertion of at least three power supply modules, and the power supply modules may be connected to a power line in the parallel switching network through a connector, and may be connected to a battery or a standby dc power supply thereof through the power line to convert the battery or the standby dc power supply and provide a secondary power supply for use by other functional modules. The first connection unit may further include a plurality of power supply slots into which a plurality of power supply modules are inserted, and may be used in a master-slave manner.
The first connecting unit further comprises a plurality of communication slot positions, wherein the plurality of communication slot positions are connected with at least three parallel switching networks through connectors, the plurality of communication slot positions can be inserted into communication modules with different functions so as to meet different communication requirements, preferably, the power supply module is a 5V secondary power supply module, and the communication module is a high-speed differential communication module.
Further, the connector assembly includes:
three key pins provided by the functional module and three key holes provided by the backplane connector assembly; each key hole is provided with an misplug-preventing guide surface, and reliable correct connection is realized through different angles of the guide surfaces.
Specifically, the power supply slot position and the communication slot position both adopt key pins and key holes matched with corresponding functional modules, and slots of different functional modules adopt different key pins and key holes (key misplug prevention tracks) so as to prevent the slot position misplug between different functional modules. The power supply slot position adopts a power supply interface matched with the power supply module so as to connect the power supply module and the connector. The communication slot position adopts a communication interface matched with the communication module so as to connect the communication module and the connector.
Preferably, the power supply interface is a chip contact and the communication interface is a low voltage differential pair interface.
The key positions realize the misplug prevention of the module slot positions in a combined mode, each key is provided with 6 key positions for adjustment, and the difference of every two adjacent key positions is 60 degrees. There are 216 different combinations of three keys.
Further, the second connection unit includes:
a plurality of common signal contacts for connecting said functional module and said parallel sub-network via said connector;
a plurality of custom signal contacts for connecting the functional module and the parallel sub-network through the connector.
Specifically, the second connection unit includes a plurality of universal signal contacts, and it is connected with function module and three parallel switching network through the connector, can connect other function module or connect external equipment through parallel switching network, and it can insert a plurality of universal signal modules to realize universal signal module and outside signal interaction, and in the same way, the grafting of the function module of a plurality of self-defined models can be realized to a plurality of self-defined signal trench, thereby realizes the function of this module. Preferably, the universal signal module is a 5VIO or 28VIO signal, and the custom signal module is Udf.
Further, the universal signal contact includes: and the universal signal interface is used for electrically connecting the functional module and the connector.
Further, the custom signal contact includes: and the user-defined signal interface is used for electrically connecting the functional module and the connector.
Specifically, the universal signal slot position and the user-defined signal slot position adopt key position misplug prevention key position pins and key position holes matched with corresponding functional modules, the slots of different functional modules adopt different key position misplug prevention key position pins and key position holes, namely the universal signal slot position, the user-defined signal slot position, the power supply slot position and the communication slot position adopt different key position misplug prevention key position pins and key position holes, wherein the same type of slot position adopts the same key position misplug prevention key position pins and key position holes, and the universality among the same type of functional modules can be realized. The universal signal slot position adopts a universal signal interface matched with the universal signal module to connect the universal signal module and the connector. And the user-defined signal slot adopts a user-defined signal interface matched with the user-defined signal module so as to connect the user-defined signal module and the connector.
The redundant general bus system provided by the invention provides a triple redundant communication and control bus, provides a self-defined signal interface, can meet the requirements of complex and high-integration combined electronic instruments, improves the stability of the system, and can adapt to severe electromagnetic environment and thermodynamic environment.
Example two
Referring to fig. 3 and 4, fig. 3 is a schematic diagram of slot and module docking according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of an 8-slot redundant universal bus device according to an embodiment of the present invention. The embodiments of the present invention are illustrated on the basis of the above-described embodiments. As shown in fig. 3, an 8-slot redundant universal bus device supporting custom signals includes 8 functional module slots, and the device can be installed on a standard rack, preferably, the standard rack has a model of 6U industrial chassis, and the size of the device is 6U. Wherein, trench 1 is the power supply trench, and inserted functional module 1 is power module, and trench 2 is the communication trench, and inserted functional module is communication module, and trench 3 is general signal trench, and inserted functional module 3 is general signal module, and trench 4 is the self-defined signal trench, inserts self-defined signal module. All the slot positions are connected into a redundant bus network through a backboard bus. Each slot contains three groups of functionally identical connectors, the first group being P11, P12, the second group being P21, P22, and the third group being P31, P32. When each functional module is inserted into the slot position of the backboard, the functional module is connected with the three groups of connectors, the three groups of connectors are connected with the three groups of parallel bus networks of the backboard, and the parallel bus networks are connected into a whole through the printed circuit of the backboard.
The connector P11 and the connector P12 are first connection units, and the connector P11 and the connector P12 are connected to three parallel switching networks (three buses), specifically, the connection relationships and functions of each slot, each connector, and the three parallel switching networks are the same as those in the above embodiments, and are not described herein again.
Similarly, the structures of the slot positions 5 to 8, 9 and 12 are the same as those of the slot positions 1 to 4, and are not described herein again.
The 8-slot redundant general bus system supporting the custom signal provided by the embodiment of the invention shown in fig. 4 is formed.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. A redundant universal bus system supporting custom signals, comprising:
at least three groups of parallel sub-networks with the same function, wherein each group of sub-networks respectively corresponds to one group of connector components; the sub-networks with the same function are symmetrically distributed on the backboard, slot positions which are butted with the connector assembly are configured on the backboard, each slot position is inserted with one functional module, and the connection of the plurality of functional modules is realized through the sub-networks; wherein each connector assembly comprises: the first connecting unit is used for inserting the power supply module and the communication module; the second connection unit is used for inserting a general signal module or a self-defined signal module so as to provide redundant communication on a bus, and the first connection unit and the second connection unit are connected with the parallel sub-network through connectors; each of the functional modules includes: the power supply module, the communication module, the universal signal module and the user-defined signal module are inserted into the slot corresponding to the functional module, and the bus interface of each functional module is connected with at least three groups of sub-networks with the same function.
2. A redundant general purpose bus system according to claim 1, wherein the transmission circuit of each parallel said sub-network comprises: power lines, optical fibers, coaxial cables, twisted pair wires, differential signal communication lines, analog signal lines, and custom lines.
3. A redundant universal bus system according to claim 1 wherein said connectors comprise at least three sets of RT2 series connectors or CPCI connectors or other high density rectangular connectors.
4. A redundant universal bus system according to claim 1, wherein said first connection unit comprises:
the power supply module comprises at least three groups of power supply parts, is connected with the parallel sub-network through the connector and is used for being inserted into the power supply module to provide at least three sets of redundant power supplies for all other functional modules;
comprises at least three groups of communication sites, which are connected with the parallel sub-networks through the connectors and are used for providing redundant communication among all modules on the bus.
5. A redundant universal bus system according to claim 4, wherein said connector assembly comprises:
three key pins provided by the functional module and three key holes provided by the backplane connector assembly; each key hole is provided with an misplug-preventing guide surface, and reliable correct connection is realized through different angles of the guide surfaces.
6. A redundant general purpose bus system according to claim 1, wherein said second connection unit comprises:
a plurality of common signal contacts for connecting said functional module and said parallel sub-network via said connector;
a plurality of custom signal contacts for connecting the functional module and the parallel sub-network through the connector.
7. A redundant universal bus system according to claim 6, wherein said universal signal contacts comprise:
and the universal signal interface is used for electrically connecting the functional module and the connector.
8. A redundant universal bus system according to claim 7, wherein said custom signal contact comprises:
and the user-defined signal interface is used for electrically connecting the functional module and the connector.
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