CN108829624A - A kind of storage organization method of CPS nodal community data and functional method code - Google Patents
A kind of storage organization method of CPS nodal community data and functional method code Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4027—Coupling between buses using bus bridges
- G06F13/4031—Coupling between buses using bus bridges with arbitration
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/24—Handling requests for interconnection or transfer for access to input/output bus using interrupt
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- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4027—Coupling between buses using bus bridges
- G06F13/404—Coupling between buses using bus bridges with address mapping
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
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Abstract
A kind of storage organization method of CPS nodal community data and functional method code, it is characterised in that：It sets a property memory block in CPS node, memory node description defines two kinds of information with functional attributes, functional method code memory block is set, the code and data of memory node function processing method, after addition system, other CPS host nodes are mapped according to the data mapping that information dynamic in attribute memory block establishes CPS node with method CPS node.The storage organization method of CPS nodal community data and functional method code of the invention, provide a kind of attribute data tissue and storage method for supporting CPS node Dynamic Recognition and access, good support is provided for the dynamic access of plug and play and free drive of CPS node device, the heterogeneous access ability and access criteria of CPS node can be improved.
Description
Technical field
The present invention relates to a kind of functional module method for organizing of information physical system (CPS) more particularly to a kind of CPS nodes
Function module data tissue and storage method.
Background technique
Information physical system (Cyber-Physical Systems, hereinafter referred to as CPS) is by calculating, communicating and control
Information processing and phy-aware are executed depth integration by the combination of technology processed, realize that computing resource and physical resource are coordinated
The New Generation of Intelligent system of work.CPS by series of computation unit and physical object in a network environment it is highly integrated with
Interaction, to improve ability of system in terms of information processing, real time communication, accurate remote control and component,
It is that space-time multidimensional isomery mixes autonomous system, has the characteristics that real-time, safe and reliable, high-performance.CPS is advanced by integrating
Information technologies and the automatic control technology such as perception, calculating, communication, control, construct physical space with it is a variety of in information space
Element mutually maps, interaction in due course, the complication system efficiently cooperateed with, the on-demand of resource distribution and operation in realization system,
Iteratively faster, dynamic optimization.
CPS emphasizes to calculate and physics is combined closely, while also emphasizing networking, and core is still information processing.Data
Perception is then the basis that CPS realizes analysis, science decision in real time, is the starting point of CPS data closed-loop flow.By instructing control to hold
Row unit acts on physical world, and making it, desirably state develops, then is a free-revving engine of CPS.In order to adapt to
The demand that sensor ubiquitous access, multi-source perception are merged, CPS should have the ability of well adapting to for Heterogeneous Information, simultaneously
Section components are dynamically exited and are accessed in permission system.
A main path of CPS perception data is to carry out data acquisition by wireless sensor network at present.However,
The fields such as a large amount of industrial site, embedded Control, due to the system by factors such as noise, signal decaying, message collisions
About, wireless sensor network real-time, accuracy, in terms of be difficult to meet application requirement.It is traditional based on bus
The embedded distribution processing system of network connection, due in sides such as Bus Speed, fault-tolerant ability, synchronous, the isomery extensions of node
Face lacks enough supports, it is also difficult to meet CPS heterogeneous access, Dynamic link library, reliability, in terms of development need
It asks.Meanwhile various wireless networks and high-speed bus, the interruption for lacking equipment room mostly are supported, it is difficult to equipment room in CPS application
The quick real-time response of event provides good support.
Dynamic reconfigurable high-speed serial bus (UM-BUS) is proposed for system compact and embedded integrated design
One kind redundancy fault-tolerant and high-speed communication organic unity can be had the high-speed serial bus of Remote Expansion ability.Such as Fig. 1 institute
Show, it is using based on M-LVDS (Multipoint Low Voltage Differential Signaling, multiple spot low voltage difference
Sub-signal) technology bus type topological structure, support multinode direct interconnection, 32 channel concurrent transmissions at most can be used, lead to
Believe rate up to 6.4Gbps.In communication process, if certain channels are broken down, bus control unit can detect in real time
Come, data are dynamically assigning on remaining effectively channel and are transmitted, dynamic restructuring are realized, to carry out dynamic to communication failure
It is fault-tolerant.
UM-BUS bus uses the communication pattern of principal and subordinate's command response, and information exchange is carried out by way of data packet.Even
The communication node connect in bus can be divided into master node, slave node and monitoring node by function difference, and bus communication process is always
It is initiated by host node, is completed from node response.UM-BUS bus has the function of time synchronization, it is ensured that each node of bus
Between time system precise synchronization.UM-BUS bus supports single main (Single Master) communication and more main (Multi
Master two kinds of communication patterns) are communicated.Under more holotypes, may exist multiple host nodes in bus, needed between multiple host nodes
It will be by the arbitration mode that variable slot rotates come the competition bus right to use.
UM-BUS bus communication process can only be initiated by host node, and host node can press other intra-node functional units
Address read and write access can support three kinds of I/O space, memory space and attribute space address spaces, wherein attribute space size 1KB,
I/O space size 64KB, memory space 256TB.It can be the plug and play of sensor and execution unit, data method attribute in CPS
It encapsulates, be reliably connected at a high speed, isomery accesses in real time etc. provides technical support.
The processing of UM-BUS bus supports both interrupt, any node in bus can be by common interrupt signal wires to any
One or more bus nodes carry out interrupt requests.
For the application demand of CPS, the characteristics of being based on UM-BUS bus, the present invention proposes a kind of CPS nodal community data
It is square in heterogeneous access, dynamic organization, standardization extension etc. for meeting CPS with the tissue and storage method of functional method code
The growth requirement in face.
Summary of the invention
It is an object of the invention to design a kind of CPS nodal community data based on UM-BUS bus and functional method code
Tissue and storage method, mentioned for CPS node plug and play, heterogeneous access, differential shading, standardization extension, the dynamic application of free drive
For supporting.
To achieve the above object, the technical scheme adopted by the invention is as follows：
A kind of storage organization method of CPS nodal community data and functional method code, it is characterised in that：CPS node N0
Stored using attribute data and functional method code of the following methods to node, in the system of addition, for other nodes into
Mobile state load：
(1) set a property memory block in CPS node N0, including node describes two kinds points of area and functional attributes definition
Area；The node describes area and definition is described to the essential characteristic of CPS node N0, includes at least node identification, function defines
Two kinds of information are described, the function defines size, the quantity described to global approach area storage location and functional attributes definition
It is described, node serial number, type etc. is described in the node identification；Function of the functional attributes definition to node
Attribute is described, and includes at least Function Identification, function processing method information, performance data information；The Function Identification is to function
Energy type, effect are described；The function processing method information defines Global treatment method, function processing method in method area
Storage location and size；The performance data information is divided into data and describes area and data operating space, and the data describe area pair
Type, address and the quantity information of performance data are defined, the data manipulation area be one can be directly to performance data
The region being written and read；
(2) region of the setting for store function method code in CPS node N0, is referred to as method area, including side
Method describes area, method map section and method entity area；The method describe area to the method quantity in method area and methodological function into
Row description；The method map section is that each method stores the index information including title, storage address；The method is real
The program code and data of body area Realization of Storing function；
(3) after CPS node N0 access system, other CPS host node Mx in system pass through the category for reading CPS node N0
Property memory block obtain nodal information, the method area of CPS node N0 is loaded into CPS host node Mx memory, and is deposited according to attribute
The information of storage area is CPS node N0 method for building up mapping table and data mapping tables, and CPS host node Mx is to CPS node N0's later
Data access and method call, which pass through established data mapping tables and method mapping table, to carry out.
The storage organization method of CPS nodal community data and functional method code that the present invention realizes, it is total by UM-BUS
The attribute space of line realizes the attribute memory block of CPS node, and attribute and data to CPS node, method are defined, pass through
The memory space of UM-BUS bus realizes the method area of CPS node, storage is formatted to functional method code, so that bus
Other upper CPS host nodes can easily identify it, and carry out data and method mapping for it.This makes based on this hair
Bright CPS system can support the indifference tissue fusion of different type CPS node, exempt CPS node driver and pacify in advance
Dress demand solves the problems, such as the fusion of CPS node isomery and dynamic access, and the heterogeneous access ability and access of CPS node can be improved
Normalization is conducive to the standardization upgrade maintenance of CPS system.
Detailed description of the invention
Fig. 1 is the topology diagram of UM-BUS bus；
Fig. 2 is UM-BUS bus protocol hierarchical model figure；
Fig. 3 is UM-BUS bus data transfer process and data path schematic diagram；
Fig. 4 is UM-BUS bus interrupt signal line connection schematic diagram；
Fig. 5 is CPS host node method map section structure chart；
Fig. 6 is the integral layout and storage organization schematic diagram in CPS nodal method area；
Fig. 7 is CPS host node data mapping tables structure chart；
Fig. 8 is CPS from node Dynamic Recognition procedure chart；
Fig. 9 is CPS host node Dynamic Recognition procedure chart.
Specific embodiment
As shown in Figure 1, UM-BUS bus uses the multi-channel intelligent dynamic redundancy based on M-LVDS (TIA/EIA-899)
Bus type topological structure could support up 30 communication node direct interconnections, not need routing or trunking；Use 2~32
Channel concurrently-transmitted data, maximum communication rate is up to 6.4Gbps；Channel can pass through channel dynamic redundancy if there is failure
And failure reconfiguration technology automatic shield faulty channel, continue to communicate on remaining healthy channel；Using the logical of principal and subordinate's command response
Letter mode can provide Remote metering system and non intelligent extended capability for system.
Node in UM-BUS bus can be divided into master node, slave node and monitoring node by function difference, primary to communicate
Process can only be initiated by host node, and by from node or the response of other host nodes, monitoring node is used to monitor logical in bus
Letter process.Between node by way of data packet interactive information.UM-BUS bus host node can be to other intra-node functions
Unit presses address read and write access, and three kinds of I/O space, memory space and attribute space address spaces, I/O space and attribute can be supported empty
Between access can only be written and read by word, and can not buffer, memory space can only be then written and read access by page, and be needed in local
It is buffered.
The protocol layers model of UM-BUS bus as shown in Fig. 2, be followed successively by process layer, data link from top to bottom
Layer, physical layer, wherein process layer is responsible for the management of entire bus, protocol encapsulation and conversion to upper layer application interface.Data
Link layer is divided into transmission sublayer and media access control sublayer two parts again, and transmission sublayer is grouped data according to existing active line
And dynamic restructuring；Media access control sublayer is responsible for communication line detection, provides channel health status to transmission sublayer, completes to channel transfer
Information carries out secondary packing and unpacking, realizes the time synchronization of bus node.Physical layer is the bottom of agreement, it is logical for data
Letter provides transmission media and interconnection equipment, realizes the physical connection of network, complete serioparallel exchange, 8b/10b encoding and decoding, when
Clock such as synchronizes at the functions, provides reliable communication infrastructure for bus.
Bus node is using the form of data packet to carry out data transmission between different agreement layers in communication process, data
Transmission process is as shown in Figure 3.When data communication, in transmitting terminal, process layer obtains data from high-level interface and stores slow to data
Area is rushed, data packet dynamic equalization is assigned to effective channel in the active line information that transmission sublayer is provided according to media access control sublayer
On, after physical layer packs packet data, bit stream is encoded into through 8b/10b and is sent to chain road.In receiving end, physical layer
After the data received are carried out synchronous clock, 8b/10b decoding, serioparallel exchange, channel data is unpacked, then in transmission sublayer
Data are carried out dynamic organization and are stored in data buffer zone by the active line information provided according to media access control sublayer, finally by handling
Layer gives application layer process.
Under multi-host communication mode, host node must could be sent after obtaining the bus right to use from physical layer to bus
Data start a bus communication process.UM-BUS bus has the function of time synchronization, when work, in bus at all nodes
In time synchronization state.
Between all nodes, special shared interrupt signal line is arranged in UM-BUS bus.As shown in figure 4, bus is all
Node can be by OC (open collector) or equivalent way, using serial code mode, into the transmission of shared interrupt signal line
Disconnected request signal, lifts interrupt requests to bus host node；Meanwhile all nodes can also receive letter from shared interrupt line
Number, obtain the information transmitted on interrupt line.
Based on above-mentioned UM-BUS bus working principle, a kind of specific reality of CPS host node dynamic identifying method of the invention
It is as follows to apply mode：
For sake of convenience, it is assumed that CPS system as communication bus, shares 6 host nodes in bus using UM-BUS bus
With 10 from node, the CPS host node and CPS that are respectively equivalent in the CPS system are from node, the node number of each CPS host node
It is defined as 1~6, each CPS is defined as 11~20 from the node number of node.
The definition of 1 attribute space of table
In order to realize the standardized operation to UM-BUS bus node equipment in CPS system, meeting isomery fusion and move
The demand of state access, a kind of virtual equipment of software definition is realized using the attribute space of UM-BUS bus, passes through attribute sky
Between the standard interface that defines, method realize to the unification operation of heterogeneous device.
One, UM-BUS bus node attribute space is arranged
The 1KB attribute space of node each in UM-BUS bus is divided into node and describes area (32 words, 128B), reserved area
Three parts in (32 words, 128 bytes) and functional attributes definition (maximum 192 words, 768 bytes), as shown in table 1.Node description
Area is used to that the essential characteristic of UM-BUS bus node is described and is defined, and reserved area will be extended for future, and functional attributes are fixed
Adopted area can be 0-4 as needed, at most may be implemented to be specifically defined 4 concrete functions.One UM-BUS bus
Node can at most support four kinds of function combinations, can be that a functional attributes definition is arranged in each function by attribute space
Area carries out software definition to function.
1, node describes area
Node describes area's totally 32 words (128 byte), occupies attribute space address 0-124, to node number, interrupts control, empty
Between demand, function classification, global approach, nodename etc. be defined.
(1) node number and essential attribute
0th word is node number and essential attribute, is divided into 4 bytes, and lowest byte is node serial number, and position 4-0 is UM-BUS
Bus node number, virtual value 1-30；Secondary low byte is node type attribute, and position 7 (highest order) is that 1 expression node has main section
Point ability, position 6 are that 1 expression node has from node capacity, and position 5 indicates that node has time host node ability for 1, and position 4 is 1 table
Show that node has interrupt requests ability, position 3 is that 1 expression node has interrupt handling capacity；Secondary high byte is nodal function attribute,
Position 2-0 is 0 expression node without concrete function area, indicates that node has 1-4 kind combination function for 1-4, uses 1-4 functional attributes
The specific object and method of each function of area definition；Highest byte retains, and extends for future.
(2) control is interrupted
Control totally 5 words are interrupted, and address 4 is forced resetting register, node can be set to register write-in 0x1005
It is standby to reset；Address 8 is interrupt mask register, and position 15-0 corresponds to interrupt requests 15-0, shields corresponding interrupt requests when being 1,
Only allow No. 0 interruption after reset；Address 12 is to interrupt identification register, and position 15-0 respectively corresponds interrupt requests 15-0, is indicated for 1
Corresponding interrupt requests high level is effective, and otherwise rising edge is effective；Address 16 is to interrupt forced register, and position 15-0 is respectively corresponded
Interrupt requests 15-0, write-in 1 indicate to force to generate corresponding interrupt requests；Address 20 retains, and extends for future.
(3) space reflection demand
Address 24 is I/O space address need register, and position 15-0 is to carry out unified address of cache in the master node from node
When, the I/O space size needed, unit is byte, and one can only at most map the I/O space of 64KB from node.Address 28 is to deposit
Space address demand register is stored up, when position 15-0 indicates to carry out unified address of cache in the master node from node, the storage that needs
The block number in space, each piece is 64KB.Therefore, a memory space that can only at most map 4GB from node.Memory space access
When, if necessary to can individually specify high 16 bit address by position 31-16 by the way of piecemeal mapping more than 4GB range.
(4) function defines
Address 32 is function coding register, is divided into 4 bytes, and lowest byte is function classification, and secondary low byte is function
Subclass coding, highest byte and time high byte retain, and extend for future.
The word of address 36,40 two retains, and extends for future.
Node global approach area index is in address 44,48, initial address and size including method area.Initial address is 48
Position specifies global approach in the initial address of this node storage space.Address 44 is low 32 of initial address, address 48 it is low
16 are the 16 high of initial address.High 16 of address 48 are the size in global approach area, and the size in global approach area is with 256
The block number of byte indicates that is, global approach area is up to 16MB.
Address 52 is functional attributes area definition register, is divided into 4 bytes, by lowest byte (position 7-0), secondary low byte
(position 15-8), secondary high byte (position 23-16), highest byte (position 31-24) sequence, respectively indicate 1,2,3,4 four function of function
Attribute definition area number of words.Minimum 10 words in one functional attributes definition, are up to 140 words, therefore each byte value range
For 10-140.If functional attributes definition is not present, i.e., no corresponding function, then corresponding byte should be 0.
The word of address 56,60 two retains, and extends for future.
(5) name definition
Tetra- words of address 64-76, totally 16 byte is encoded, every two word for the title of node to be arranged using Unicode
Section indicates a character, can indicate 8 characters altogether.Tetra- words of address 80-92, totally 16 byte, for node manufacturer to be arranged
Title, encoded using Unicode, one character of every two byte representation can indicate 8 characters altogether.Address 96-124 totally 8
Word retains, and extends for future.
2, functional attributes definition
UM-BUS bus node could support up four kinds of function combinations, and a functional attributes are arranged for each function and define
Area carries out abstract definition to its attribute configuration, I/O operation, processing method, to support the normalizing operation of heterogeneous device.One
UM-BUS bus node contains at least one functional attributes definition, at most may include four functional attributes definitions.Function
Processing method that attribute definition area code requirement structure is related to a functional module, operation address are defined, so as to
Unified standard operation is carried out to isomery version on software.
Functional attributes definition includes primary attribute definition and can two part of operational attribute definition.Primary attribute definition is solid
It is set to 10 words, if a functional attributes definition exists, it is necessary to have primary attribute definition.Operational attribute then basis
Functional requirement selection is realized.
(1) primary attribute defines
Primary attribute definition includes that function code, title and operational attribute configure, totally 10 40 bytes of word.
Function code occupies first character, is divided into 4 bytes, and lowest byte is function classification, and secondary low byte is function
Class coding, highest byte and time high byte retain, and extend for future.
2-5 word is function title, and totally 16 byte, is encoded using Unicode, one character of every two byte representation, altogether
It can indicate 8 characters.
6th word is operational attribute configuration words, is divided into 4 bytes.Highest byte retains；Secondary high byte position 0 is that 1 expression exists
Otherwise functional method memory block does not have functional method memory block；Secondary low byte is direct access attribute area size, value 0-64,0
Indicate no direct access attribute area, 1-64 indicates the number of words in direct access attribute area；Lowest byte is I/O space attribute mapping
Area (dereference attribute area) size, value 0-64,0 indicates no I/O space attribute mapping area, and 1-64 indicates I/O space mapping
The number of words of attribute area.In the present embodiment, the operational attribute configuration words of four functional attributes definitions be respectively 0x00011020,
0x00010C00,0x00000800,0x00010040 are indicated：Function 1,2,4 has functional method memory block, and function 3 does not have function
It can method memory block；The direct access attribute area number of words of function 1,2,3 is respectively 16,12,8, and function 4 is without direct access attribute
Area；The I/O space attribute mapping area number of words of function 1,4 is respectively 32,64, and function 2,3 does not have I/O space attribute mapping area.
Totally 4 words retain 7-10, extend for future.
(2) operational attribute defines
The operational attribute of UM-BUS bus node function is divided into four kinds：
1) functional method attribute, in operational attribute definition, using 2 words, totally 8 bytes provide functional method code and are saving
The storage initial address and size of point memory space.Initial address is 48, and first character is low 32 of initial address, second
Low 16 of a word are the 16 high of initial address.High 16 of second word are the size in functional method area, functional method area
Size indicate that therefore functional method area is up to 16MB with the block number of 256 bytes.
2) data are directly accessed, 64 direct references can be at most defined in operational attribute area, by straight to these
The address read-write of data is asked in receiving, can be done directly the read and write access to performance data.
3) dereference data can at most define 64 I/O space mapping address in operational attribute area, they are deposited respectively
A node I/O space address is stored up, by the read and write access of these I/O space addresses, completes the read and write access to performance data.
4) proprietary data, this performance data is related to node specific implementation, can be in I/O space, can also be empty in storage
Between.
The mark that operational attribute definition supports functional method attribute, directly accesses data attribute and dereference data attribute
Standardization definition is realized the isomery of same function, as long as system software can use identical using identical attribute definition
Software is uniformly processed.
Table 1 gives the functional attributes definition example that one includes the bus node of four kinds of functions combination.
Two, method area storage format
UM-BUS bus node may include two methods of global approach and functional attributes method, and global approach is used to support
The system initialization of node device, public operation, interrupt processing function, functional attributes method are used to the data of concrete function
Reason, attribute setting and drive control are specifically handled.Global approach and functional attributes method all use identical storage organization
It is solidificated in the memory space of node, after system reset, is dynamically loaded into being locally stored for processor as needed by host node
It is run in device.Area and functional attributes definition is described in node to provide global approach and functional attributes method respectively and store in node
The storage initial address and range in space.Method area maximum is occupied 16MB and is stored using 256B memory block as base growth unit
Beginning address is necessary for 256B boundary alignment, and storage format is as shown in figure 5, include that method describes area, method map section and method reality
Body area three parts.Fig. 6 gives the integral layout and storage organization structure in CPS nodal method area.
1, method describes area
Method describes area's 64 byte of totally 16 word, and the lowest byte of the 1st word is used to indicate the method sum in method area, value model
0-128 is enclosed, other three bytes retain.Therefore, each method area at least includes 0 method, contains up to 128 methods.When
When the method sum in method area is 0, without method map section and method entity area.Method describes remaining 15 word in area totally 60 word
Section, is briefly described method using ASCII character, may include the information such as copyright, title, version.
2, method map section
Method map section is used to provide index for each specific method, establishes an index entry for each method.One rope
Draw item and occupy 8 words (32 byte), including the offset of method name, method, method parameter and reserved field.Method name occupies 16 words
Section, using ASCII character representation method.Method offset occupies 4 bytes, provides method code entrance in the inclined of method area initial address
It moves；Method parameter totally 4 byte, supports 4 parameter definitions, is not present for 0 expression parameter, indicates numerical parameter for 1, indicates for 2
Pointer parameter.Reserved field totally 8 byte will be extended for future.
3, method entity area
Method entity area is used to store the entity code and data of support method operation, not only includes the execution of method itself
Code further includes that method code executes the support code needed and data, also may include other user-defined data and generation
Code.
Three, the access method of functional parameter
Based on above-mentioned UM-BUS attribute bus definition space, in CPS system, to the specific access side of nodal function parameter
Method is as follows：
(1) straight by the attribute space data access mode of UM-BUS bus for the attribute-defining data of attribute space
Tap into row read and write access；
(2) for node proprietary data, access is written and read by attribution method, can also according to the address IO of agreement or
Storage address is written and read access；
(3) for the direct access data and dereference data that are defined in attribute space, by the following method with step into
Row read and write access：
1) as shown in fig. 7, in CPS host node, one is established by node number, space from each data of node for CPS
The address of cache of the address of cache of mark, storage address three parts composition, all data of each function constitutes an independence
Attribute data address mapping table.Wherein, node number is node number of the CPS from node；Space identification indicates that data are in IO sky
Between or in attribute space, can also include other attributes such as read-write, the size of data；Storage address be then data CPS from
Node corresponds to the storage location in space.
2) when to CPS from node initializing, CPS host node obtains direct one by one from each of which functional attributes definition
The storage address of access data and dereference data, the storage that acquired storage address is mapped as data address
Location, and be data address mapping settings space identification and node number.
3) when CPS host node is written and read access to performance data, from the corresponding attribute data address mapping table of function
Corresponding address of cache is obtained, according to the node number, space identification and storage address of address of cache, passes through UM-BUS bus pair
CPS is written and read from the corresponding address of the additional space of node.
Four, the dynamic loading method of function processing method
In CPS system, CPS host node needs to load the functional method of other nodes, during dynamically load, to appoint
One CPS host node, other CPS nodes are used as CPS from node, its functional method are loaded into the host node.
Global approach and function processing method dynamically load and calling when node initializing and system are applied.To one
When CPS is initialized from node, dynamically load is carried out using following steps and method and is called：
(1) CPS host node reads attribute space of the CPS from node first, obtains CPS from the global approach area of node and function
The configuration information in energy processing method area；
(2) CPS host node according to CPS from the global approach area of node and the memory space requirements in function processing method area,
In CPS host node memory, it is CPS from node method for building up loading zone, includes interruption processing method area, global approach area and function
It can method area；
(3) by UM-BUS bus, CPS is copied into CPS host node method loading zone from all method codes of node
Corresponding region；
(4) the method for building up mapping table in CPS host node is CPS from each method of node indicates shared memory
Beginning address and size, each method in mapping table, ASCII character sequence by name is arranged, convenient for retrieval；
(5) when the application call CPS in CPS host node is from the functional method of node, first by method name and
Parameter carries out lookup matching in method mapping table, is then transferred to corresponding mapping address, and specific method code is called to carry out
Processing.
Five, the dynamic identifying method of functional module
1, from the dynamic identifying method of node
Based on UM-BUS bus, CPS host node carries out Dynamic Recognition from node to CPS using following methods and step, such as
Shown in Fig. 8.For sake of convenience, without loss of generality, it is assumed that CPS from node S0 be it is to be identified from node, by any in CPS system
CPS host node Mx identification.
(1) CPS from node S0 in being added to system or reset after, first, in accordance with UM-BUS bus specification complete when
Between it is synchronous, the global interrupt request of a request identification is then sent in UM-BUS bus, requests to connect in UM-BUS bus
All CPS host nodes it is identified；
(2) a CPS host node Mx in UM-BUS bus receive CPS from node S0 request identification global interrupt ask
After asking, handled as follows：
1. reading attribute space of the CPS from node S0, essential attribute information of the CPS from node S0 is obtained；According to CPS from section
The essential attribute information of point S0 is judged, if CPS had been identified from node S0, is gone to step 4.；Otherwise, it goes to step 2.
It continues to execute；
2. being in memory CPS from node S0 method for building up loading zone, CPS is read from the overall situation side of node S0 attribute space
The configuration information in method area and functional attributes method area is all interruption processing methods, global approach and function of the CPS from node S0
Method method for building up mapping table, and CPS is moved from the method code on node S0 into the memory of CPS host node Mx, turn step
Suddenly 3.；
It is in memory CPS 3. reading immediate data attribute and indirect data attribute definition area information of the CPS from node S0
Establish functional parameter read and write access mapping table from node S0, for each data establish one comprising node serial number, space identification,
4. the address of cache of storage address three parts information, goes to step；CPS host node Mx is establishing functional parameter from node S0 for CPS
When read and write access mapping table, by CPS from the address of cache of all properties data of node S0 each function, an independence is constituted
Functional parameter read and write access mapping table；
After 4., when CPS host node Mx accesses to CPS from the data of node S0, pass through functional parameter read and write access
Mapping table accesses data of the CPS from node S0；When being called to CPS from the method for node S0, by CPS host node Mx
Method mapping table in depositing executes corresponding method code.
(3) during carrying out from the Dynamic Recognition of node, each CPS host node in UM-BUS bus is receiving CPS
After the global interrupt request of the request identification sent from node S0, according to the how main referee method of bus, successively to CPS from node
The bus access that S0 is needed.
2, the dynamic identifying method of host node
Based on UM-BUS bus, CPS host node carries out dynamic from node to the CPS in bus using following methods and step
Identification, and by other host node Dynamic Recognitions in bus, as shown in figure 9, UM-BUS address space and host memory are empty in figure
Between internal structure be laid out same Fig. 8.For sake of convenience, without loss of generality, it is assumed that CPS host node M0 is host node to be identified.
(1) CPS host node M0 is same first, in accordance with the UM-BUS specification deadline in being added to system or after resetting
Then step sends the global interrupt request of a request identification in UM-BUS bus, requests its connected in UM-BUS bus
He identifies it all CPS host nodes, and requests to identify other CPS nodes；
(2) all CPS connected in UM-BUS bus are from node in the complete of the request identification for receiving CPS host node M0 transmission
After office's interrupt requests, the interrupt requests of a request identification can be sent to CPS host node M0 by UM-BUS bus, request CPS
Host node M0 carries out identification load from node to the CPS；
(3) other CPS host nodes connected in UM-BUS bus are complete the request identification for receiving CPS host node M0 transmission
Office interrupt requests after, first by UM-BUS bus read CPS host node M0 attribute space configuration information, in memory for
CPS host node M0 establishes functional parameter read and write access mapping table and method mapping table, completes to know the dynamic of CPS host node M0
Not；Then, the interrupt requests that a request identification is sent to CPS host node M0, request CPS host node M0 to the CPS host node
Carry out identification load；Each CPS host node in UM-BUS bus is total according to UM-BUS to the bus access of CPS host node M0
The how main referee method of line, successively carries out.
(4) it after the interrupt requests that the request that CPS host node M0 receives the transmission of other CPS nodes identifies, reads and sends request
Identify interrupt CPS node attribute space, be in the memory of CPS host node M0 according to the configuration information of its attribute space
It sends the CPS node that request identification is interrupted and establishes functional parameter read and write access mapping table and method mapping table, and requested sending
It identifies that the method code of the CPS node interrupted is loaded into the memory of CPS host node M0, completes to request identification to be interrupted transmission
The Dynamic Recognition of CPS node.
The storage organization method of CPS nodal community data and functional method code that the present invention realizes, it is total based on UM-BUS
Line provides the storage organization method of a kind of CPS nodal community data and functional method code, can be by the data of CPS node
It is stored in functional method in the address space of node itself, by others CPS host node in bus after node access system
Dynamic Recognition and management, can exempt the demand that CPS is disposed on CPS host node in advance from node driver, realize free drive
Dynamic application, can be improved the fusion faculty of isomery CPS node, is conducive to the standardization upgrade maintenance of CPS system.
Without departing from the spirit of the scope of the invention, the present invention can have various deformation, such as：Use the total of other forms
Line or network increase other attribute informations, concept transfer naming method etc., can change in different implementation.These deformations
It is also contained within scope of the present invention.
Claims (5)
1. a kind of storage organization method of CPS nodal community data and functional method code, it is characterised in that：CPS node N0 is adopted
The attribute data of node and functional method code are stored using the following method, in the system of addition, carried out for other nodes
Dynamically load：
(1) set a property memory block in CPS node N0, including node describes area and two kinds of functional attributes definition subregion；Institute
It states node and describes area and definition is described to the essential characteristic of CPS node N0, include at least node identification, function definition description two
Kind information, the function define description and retouch to size, the quantity of global approach area storage location and functional attributes definition
It states, node serial number, type etc. is described in the node identification；The functional attributes definition to the functional attributes of node into
Row description, includes at least Function Identification, function processing method information, performance data information；The Function Identification to function type,
Effect is described；Storage location and size of the function processing method information defined function processing method in method area；Institute
It states performance data information and is divided into data and describe area and data operating space, the data describe type of the area to performance data, address
And quantity information is defined, the data manipulation area is the region that can be directly written and read to performance data；
(2) region of the setting for store function method code in CPS node N0, is referred to as method area, including method is retouched
State area, method map section and method entity area；The method describes area and retouches to the method quantity and methodological function in method area
It states；The method map section is that each method stores the index information including title, storage address；The method entity area
The program code and data of Realization of Storing function；
(3) after CPS node N0 access system, other CPS host node Mx in system are deposited by reading the attribute of CPS node N0
Storage area obtains nodal information, the method area of CPS node N0 is loaded into CPS host node Mx memory, and according to attribute memory block
Information, be CPS node N0 method for building up mapping table and data mapping tables, later data of the CPS host node Mx to CPS node N0
Access and method call, which pass through established data mapping tables and method mapping table, to carry out.
2. the storage organization method of CPS nodal community data according to claim 1 and functional method code, feature exist
In：The functional attributes definition of the attribute memory block can have multiple, can also not have, and each functional attributes definition is corresponding
One independent function combination, the quantity and the function number of combinations phase of independent body in CPS node N0 of functional attributes definition
Together.
3. the storage organization method of CPS nodal community data according to claim 2 and functional method code, feature exist
In：The attribute memory block of CPS node N0 is written and read access, the method for CPS node N0 by the attribute space of UM-BUS bus
Area is accessed by the memory space of UM-BUS bus.
4. the storage organization method of CPS nodal community data according to claim 3 and functional method code, feature exist
In：Data manipulation area in CPS node N0 attribute memory block is stored using general register form, in application process, other
Node can be written and read the data manipulation area；Other information in CPS node N0 attribute memory block is deposited using read-only
Reservoir is stored, and cannot be modified in application process；The method area of CPS node N0 is stored using read-only memory,
It cannot be modified in the application.
5. the storage organization method of CPS nodal community data according to claim 4 and functional method code, feature exist
In：There can be multiple method areas in CPS node N0, can also there is no method area, multiple function combinations can share a method
Area, but the combination of each standalone feature can only use a method area.
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