CN104243624B - A kind of method of multiple interfaces information exchange in heterogeneous network - Google Patents
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Abstract
The invention provides a kind of method of multiple interfaces information exchange in heterogeneous network, include the interface distributed architecture of analysis heterogeneous network, the information of interface in statistics network, to each one virtual IP address of interface assignment and an interface index value in network；Interface establishes communication by way of IP searches addressing；Interface judges working condition by interface index value；Data frame format conversion produces trigger signal by double index value look-up tables between interface.It can realize data exchange between distinct interface to the present invention suitable for various heterogeneous networks, have very high portability.
Description
Technical field
The invention belongs to the method for multiple interfaces information exchange in communication technical field, more particularly to heterogeneous network.
Background technology
With the execution of the low latitude open policy, civil helicopter application field has further expansion, is mainly reflected in：
Application field is constantly expanded, forms networked services general layout, depopulated helicopter.Especially in many work for the public good fields, such as
Monitoring Urban Environment/protection, natural calamity forecast/prevention etc., civilian depopulated helicopter will be more widely applied.
But unmanned plane is in the task of execution, by own physical performance constraints and battery electric quantity are limited etc., factor is influenceed, and it can not be once
Property all target areas are completed to monitor, it is also, also different to the mission requirements of different monitored area unmanned plane monitorings.Cause
This, it is necessary to maximumlly utilize unmanned plane resource.By allowing unmanned plane to carry various sensor assemblies, it is possible to achieve unmanned plane is same
When bear the multi-task, gather the data of various different demands.
In the heterogeneous network of this multisensor module composition, a variety of communication medias be present, it is necessary to a variety of communication equipments,
And communication equipment employs different interfaces, when entering row information exchange between these equipment, each interface institute in heterogeneous network
The address format disunity of use, it needs a kind of mechanism to realize the transmission of data between multiplex roles.
As shown in figure 1, establishing multi-channel data interactive mode, it can be good at data exchange between solution multiple interfaces.
Which is by establishing a data channel between interface, so as to realize the data transfer between distinct interface.This solution party
There is limitation in formula applicability, when there is many interfaces in network, will establish huge channel system, be not easy to safeguard pipe
Manage, information interaction approach is cumbersome between interface.Moreover, the configurability of this mode is very poor, when changing a kind of application scenarios,
Need to re-establish passage.
The content of the invention
In view of the shortcomings of the prior art, the invention provides multiple interfaces information exchange in a kind of heterogeneous network by the present invention
Method.
To achieve the above object, the present invention uses following technical scheme, a kind of heterogeneous network multiple interfaces information exchange
Method, comprise the following steps：
S1 initializes heterogeneous network, the interface number for determining to include in heterogeneous network, species number and be each interface assignment
One index value；
Network segment numbers of the S2 in kind of interface number setting heterogeneous network in S1；
S3 presets the network segment according to the network segment number set in S2 and is each one IP address of interface assignment, generation IP address letter
Breath forms interface IP tables；
S4 establishes one-to-one interface enable signal table, interface enable signal table according to each interface index value in step S1
Corresponded with the interface IP tables in step S3, the interface enable signal in the interface enable signal table can trigger reception and connect
Mouthful be working condition, the length of the interface enable signal table equal to number of ports in step S1 value, in interface enable signal table
Nth position write-in decimal value is 2n-1Binary value, and binary system enable signal width is equal to interface quantity in network
Value；
S5 establishes double index interface data transmission protocol conversion trigger signal tables to transmission interface, receiving interface；
Packet transmitted by S6 specification transmission interfaces, the data segment contents that each transmission interface is sent in packet include
Transmission interface index, receiving interface IP address, the information content；
Receiving interface IP address information of the S7 in packet in step S6, by its with interface IP tables in step S3 one by one
Contrast, when occurring matching equal, then now index value of the interface in storage table is recorded, step S8 is performed, if looked for not
To matching value, system will abandon the packet, the next packet of repeat step S7 processing；
The index of receiving interfaces of the S8 recorded in the transmission interface index and step S7 in packet in step S6
It is worth, the interface data transmission protocol conversion trigger signal table established in finding step S5, so that it is determined that used interface conversion
Host-host protocol；
According to the index value of receiving interface in step S7, in step S4 interface enable signal table read out reception connects S9
Mouth enable signal, the receiving interface enable signal triggering receiving interface is working condition；
The information contents of the S10 in packet in step S6, will with the interface conversion host-host protocol selected in step S8
The information content is converted into the frame format data that receiving interface is supported, is sent to triggering in step S9 and is connect for the reception of working condition
Mouthful.
Further, the interface described in step S1 in heterogeneous network includes already present interface and user prepares connecing for expansion
Mouthful.
Further, it is equal to already present kind of interface number in step S2 for the default network segment number of heterogeneous network to prepare with user
The kind of interface number sum of expansion.
Further, the subnet in step S3 under the same network segment of interface assignment of same type.
Further, described in step S6 in packet the content of data segment put in order be followed successively by transmission interface index, connect
Receive interface IP address, the information content.
Compared with the prior art, the invention has the advantages that：(1) connect the invention provides a variety of in a kind of heterogeneous network
The method of mouthful information exchange, this method has considered interface non-uniformity employed in heterogeneous network and transmission medium is various
Property, it is one virtual IP address of each interface assignment (Internet Protocol) address, and interface IP tables are established, pass through lookup
The data interaction that the mode of table is established between any interface, so as to which total interface address in heterogeneous network be united, realize
The address of multiple interfaces information exchanges is unified in heterogeneous network；(2) technical scheme passes through to every in heterogeneous network
One interface assignment, one virtual IP address unites all isomery interface communication addresses.In advance by the virtual of total interface distribution
IP is stored in an IP table, during distinct interface interaction data, IP information is write into interface data bag data section, passes through data segment
Parsing draws transmission interface IP address, receiving interface IP address and transmission content.According to transmission interface IP and receiving interface IP
Confirm interface conversion agreement, the transmission of data between interface is realized in a manner of searching table addressing.It is this based on kind of interface
Virtual IP address division methods, isomery interface communication can be established in heterogeneous network and unifies addressing standard, is provided for heterogeneous network
A kind of route basis, this method well go in any heterogeneous network, have a reconfigurable property, and well
Expansion.
Brief description of the drawings
Fig. 1 is that the isomery interface data of prior art exchanges the schematic diagram of implementation method；
Fig. 2 is the schematic diagram of the heterogeneous network example used in the present invention；
Fig. 3 is the schematic diagram of the flow of inventive method；
Fig. 4 is the schematic diagram of interface index value distribution method；
Fig. 5 is the schematic diagram for establishing equipment interface IP information table methods；
Fig. 6 is the schematic diagram for establishing interface enable signal table method；
Fig. 7 is the schematic diagram for establishing interface conversion agreement trigger signal table method；
Fig. 8 is the schematic diagram that interface data section reconfigures method；
Fig. 9 is the schematic diagram based on virtual IP address LUT Method；
Figure 10 is the schematic diagram of protocol conversion and data forwarding implementation method；
Embodiment
Technical solution of the present invention is described in detail below in conjunction with drawings and examples.
A variety of communication equipments are included in heterogeneous network, a variety of communication medias be present, are turned when information occurs between these equipment
, it is necessary to realize the mechanism of this multiplex roles information forwarding during hair.The present invention proposes multiple interfaces information in a kind of heterogeneous network
Interactive method.Fig. 2 is the heterogeneous network that plurality of devices a be present example, and USB, RS232, PHY (ether are included in the example
Network interface), tetra- kinds of interfaces of Pmod.Wherein Pmod is the self-defined host-host protocol interface of user development.These interfaces are all that connection is each
Equipment is planted to obtain ground, aerial, atmospheric monitoring parameter.RF (Radio Frequency) is used to realize equipment room in system
Data communicate, and are connected using RS232 interface with equipment.Fig. 3 is the embodiment of the present invention based on port species distribution virtual IP address side
Method, realize the unified schematic flow sheet in the address of multiple interfaces information exchange in heterogeneous network.
When it is implemented, the present invention can use the automatic running of computer software technology implementation process.The flow of embodiment
Describe in detail as follows：
Step S1, initial work is carried out, determine the number Interface_N and species of interface in heterogeneous network
Interface_type_N, user, which prepare, expands number of ports User_Expand_N and species User_Expand_type_N, final
Number of ports Interface_Index_N altogether.To being divided into same kind of interface using communication protocol identical interface.It is right
One index value of each interface assignment, its method of salary distribution are：The rope of interface i (1≤i≤Interface_Index_N) distribution
It is i to draw value.
The specific implementation process of example is described as follows：
Such as Fig. 2, in the instance system, equipment I, J, K are equivalence relations, and they distinguish monitored area 1,2,3, might as well be with
Equipment I is heterogeneous network instance objects.It can determine that the heterogeneous network kind of interface has：The 4 of RS232, USB, PHY three types
Individual interface, therefore interface number Interface_N=4, kind of interface Interface_type_N=3.User development mouth is Pmod
One, therefore interface number User_Expand_N=1, kind of interface User_Expand_type_N=1.Finally interface altogether
Number Interface_Index_N=5.The index value of interface assignment is respectively：Interface RS232_0 is assigned as 1, interface RS232_1
2 are assigned as, interface USB is assigned as 3, and interface PHY is assigned as 4, and interface Pmod is assigned as 5, as shown in Figure 4.
Step S2, according to the value of Interface_type_N and User_Expand_type_N in step S1, it is defined as each
The network segment number Network_Seg_N of individual interface assignment.Also, Interface_type_N, User_Expand_type_N and
Network_Seg_N meet relation be：Interface_type_N+User_Expand_type_N=Network_Seg_N.
The specific implementation process of example is described as follows：
According to Interface_type_N=3, User_Expand_type_N=1 can be defined as each interface assignment
Network segment number Network_Seg_N=Interface_type_N+User_Expand_type_N=4.
Step S3, presetting Network_Seg_N groups α according to the value of Network_Seg_N in step S2, (α is special according to network
Property determine) position virtual ip address.α values determine principle：
Principle 1, it at least can make up Network_Seg_N different α positions virtual ip address；
Principle 2, α values are advantageous to the unification of isomery interface IP address.
The network segment method of salary distribution is as follows：
Jth [1≤j≤(Interface_type_N+User_Expand_type_N)] interface assignment kth (1≤k≤
Network_Seg_N) networking section.To the interface of same type, the subnet distributed under the same network segment.So as to each interface
It is assigned to a α positions virtual ip address.These IP information are deposited into an interface IP table in the form of a list.The table
Length Interface_IP_table_length=Interface_Index_N.
The specific implementation process of example is described as follows：
Heterogeneous network contains Ethernet network interface in present case, and Ethernet is communicated using a kind of network address, by α
Value principle 2, unified for ease of isomery interface IP address, present case employs 32 virtual ip address, and this follow the example of meets principle
1.Interface network segment number Network_Seg_N=4 is had determined in step S2, has taken four network segments respectively：
RS232_0：115.0.113.x USB：117.2.212.x Pmod：202.3.113.x PHY：168.7.124.x
It is to realize the communication between these equipment, rather than data acquisition in view of RS232_1 interfaces, therefore RS232_1 does not have
It is merged into RS232_0, but distribution network segment 179.2.121.x in addition.It is as shown in the table, interface assignment in each equipment
Virtual IP address such as following table：
The IP information of these interfaces is stored into a table, its storage mode is as shown in Figure 5.The length of the table
Interface_IP_table_length=Interface_Index_N=5.
Step S4, according to the value of Interface_Index_N in step S1, an interface enable signal table is established, also,
Enable signal and the interface IP tables of table deposit have an one-to-one relation, and the interface in the interface enable signal table enables
It is working condition that signal, which can trigger receiving interface, and the length of the interface enable signal table is equal to number of ports in step S1
It is worth, nth position write-in decimal value is 2 in interface enable signal tablen-1Binary value, and binary system enable signal width
Equal to the value of interface quantity in network.It is as follows that it establishes mode：
The length Interface_En_length of interface enable signal table is equal to Interface_Index_N.Interface enables
The individual position write-in decimal value of signal table n-th (1≤n≤Interface_Index_N) is 2n-1Binary value.And binary system
Enable signal width is equal to the total Interface_Index_N of interface in network.
The specific implementation process of example is described as follows：
Interface_Index_N=5 is had determined, and then the index length of interface enable signal table can be determined
Interface_En_length=Interface_Index_N=5.As shown in fig. 6, table RS232_0_En write-ins value "
00001 ", RS232_1_En write-ins value " 00010 ", USB_En write-ins value " 00100 ", PHY_En write-ins value " 01000 ", Pmod_
En write-ins value " 10000 ".Judge whether certain interface is in work shape by judging the position of weights " 1 " in binary system ordered series of numbers
State.Having one-to-one relation with interface IP tables is achieved by identical index value.
Step S5, according to the relation of data forwarding between interface, establish double index (x, y) interface data transmission agreement
Transition trigger signal table.It is as follows that it establishes mode：
X directions represent a certain interface successively in table, and y directions represent other interfaces successively.Interface y is forward the data to when x connects
When, table xth arranges y row's write-ins " Interface_x_switch_y " and is endowed virtual value, and the value can trigger x interface protocols and turn
Change the start-up operation of y interface protocols into.
The specific implementation process of example is described as follows：
Tetra- kinds of ports of RS232, USB, PHY, Pmod use different Data Transport Protocols, Wu Fajin in example heterogeneous network
Row direct communication.Data conversion trigger signal between interface is stored in the agreement table of a double indexes, as shown in fig. 7, main
If data conversion between five interfaces of RS232_0, RS232_1, USB, PHY, Pmod.Table x is represented successively on direction
RS232_0, RS232_1, USB, PHY, Pmod are converted into other interfaces, and y directions can directly determine purpose interface type.Lift
One example illustrates how lookup of the realization to the table, takes x=1, y=3.According to x directions index value, x=1 look-up tables can be true
Surely it is that RS232_0 interfaces turn other interfaces, according to y=3, it is to turn USB that look-up table, which may further determine that,.Therefore double index values
(2,3) are final it is confirmed that RS232_0 turns USB, and now RS232_0_switch_USB is endowed virtual value triggering translation-protocol
Perform.
Step S6, the data segment in the packet of each interface transmission is standardized.What each interface was sent
Data segment uniform format specification is：Source port number Source_Interface_Index, purpose IP address Destination_IP
With information content Interface_information.Each interface data section arrangement mode is：Source port number, purpose IP
Location, the information content.Wherein, source port is transmission interface, and purpose IP address is receiving interface IP address.
The specific implementation process of example is described as follows：
When RS232, USB, PHY, Pmod wherein transmission interface forward data to other receiving interfaces, to each hair
The data segment in the packet of interface transmission is sent to be standardized.As shown in figure 8, forwarding hexadecimal information with RS232_0 "
Illustrate exemplified by the other interfaces of AABBCCDD ".The data segment proposition of RS232_0 interfaces is handled, re-starts encapsulation, source port number
The index value 1 that as transmission interface is distributed, purpose IP address are to forward to specify receiving interface to be distributed in step s3
Virtual IP address, the information content is " AABBCCDD ".
Step S7, the specification according to step S6 to data, purpose IP address Destination_IP in interface data is extracted,
Itself and interface IP tables in step S3 are contrasted one by one.When occur matching it is equal when, then remember now interface IP in storage table
In index Destination_Interface_Index；Then step S8 is performed, if can not find matching value, show this
Purpose IP can not find corresponding interface in present networks, and system will abandon the packet, the next packet of repeat step S7 processing.
The specific implementation process of example is described as follows：
RS232_0 data are received, extract its data segment.The envelope that RS232_0 turns data during USB has been given in step S6
Dress, extracts its purpose IP address Destination_IP=117.2.212.3.Such as Fig. 9, by itself and the interface IP tables in step S3
Compare, interface IP when comparing index value Search_Index=1 first is 115.0.113.7, unequal.Index value
Search_Index=Search_Index+1, continue to compare.When index value Search_Index=3, interface IP are
117.2.212.3, matching is found, it is USB to determine purpose interface, and remembers index value Destination_ now
Interface_Index=3.If it still can not find matching value when searching index value Search_Index=5, then it represents that no
In the presence of this purpose interface, S7 steps are repeated, handle next packet.
Step S8, the specification according to step S6 to data, extract source port number Source_Interface_ in interface data
Index, with (Source_Interface_Index, Destination_Interface_Index) double index value finding steps
Interface data transmission protocol conversion trigger signal table in S5, source interface conversion is determined according to Source_Interface_Index values
Into other interface columns, found out further according to Destination_Interface_Index values in column and be converted into purpose
The protocol conversion trigger signal of interface, so that it is determined that used interface conversion host-host protocol.
The specific implementation process of example is described as follows：
Such as Figure 10, according to step S1 interface indexs table it was determined that source interface RS232_0 interface numbers Source_
Interface_Index=1, purpose interface index value Destination_ is determined according to IP loop up table in the step s 7
Interface_Index=3.With interface data transmission protocol conversion trigger signal table in (1,3) double index value finding step S5,
Determine it is that RS232_0 is converted into other interfaces according to Source_Interface_Index=1, according to Destination_
It is RS232_0 conversions USB that Interface_Index=3, which is further determined that,.Now RS232_0_switch_USB_En is endowed
Virtual value, RS232_0_switch_USB_En=1 might as well be set herein, turn USB transport protocol execution so as to trigger RS232_0.
Step S9, using Destination_Interface_Index in step S7 as index value, enabled in step S4 interfaces
Purpose interface i.e. receiving interface enable signal Interface_X_En is read out in signal table, signal triggering purpose interface is work
Make state.
The specific implementation process of example is described as follows：
Destination_Interface_Index=3 is determined in step S7, finding step S4 interface enable signals table is read
Go out USB_En=00100, be working condition so as to trigger USB interface.
Step S10, the specification according to step S6 to data, Interface_information in interface data is extracted, with
The interface conversion agreement selected in step S8, purpose interface and receiving interface institute are converted into by Interface_information
The frame format data of support, and according to by purpose interface activation being working condition in step S9, so as to which purpose interface starts just
Often receive data.
The specific implementation process of example is described as follows：
Specification according to step S6 to data, extract Interface_information=" in RS232_0 data
AABBCCDD ", step S8 triggering RS232_0 conversion usb protocol conversions, information " AABBCCDD " can be converted into support USB frame
Form inserts its data segment, and USB has been working condition in step s 9, and now information " AABBCCDD " will be received by USB.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
- A kind of 1. method of heterogeneous network multiple interfaces information exchange, it is characterised in that comprise the following steps：S1 initializes heterogeneous network, the interface number for determining to include in heterogeneous network, species number and be each interface assignment one Index value；Network segment numbers of the S2 in kind of interface number setting heterogeneous network in S1；S3 presets the network segment according to the network segment number set in S2 and is each one IP address of interface assignment, generates IP address information shape Into interface IP tables；S4 establishes one-to-one interface enable signal table, interface enable signal table and step according to each interface index value in step S1 Interface IP tables in rapid S3 correspond, and the interface enable signal in the interface enable signal table can trigger receiving interface and be Working condition, the length of the interface enable signal table are equal to the value of number of ports in step S1, n-th in interface enable signal table Position write-in decimal value is 2n-1Binary value, and binary system enable signal width be equal to network in interface quantity value；S5 establishes double index interface data transmission protocol conversion trigger signal tables to transmission interface, receiving interface；Packet transmitted by S6 specification transmission interfaces, the data segment contents that each transmission interface is sent in packet include sending Interface index, receiving interface IP address, the information content；Receiving interface IP address information of the S7 in packet in step S6, by itself and a pair of interface IP tables 1 in step S3 Than when occurring matching equal, then recording now index value of the interface in storage table, step S8 being performed, if can not find Matching value, system will abandon the packet, the next packet of repeat step S7 processing；The index value of receiving interfaces of the S8 recorded in the transmission interface index and step S7 in packet in step S6, is looked into The interface data transmission protocol conversion trigger signal table established is looked in step S5, so that it is determined that used interface conversion transmission association View；According to the index value of receiving interface in step S7, in step S4 interface enable signal table read out receiving interface makes S9 Energy signal, the receiving interface enable signal triggering receiving interface is working condition；The information contents of the S10 in packet in step S6, with the interface conversion host-host protocol selected in step S8, by information The frame format data that Content Transformation is supported into receiving interface, it is the receiving interface of working condition to be sent to triggering in step S9.
- A kind of 2. method of heterogeneous network multiple interfaces information exchange according to claim 1, it is characterised in that step S1 Described in interface in heterogeneous network include already present interface and user prepares the interface expanded.
- A kind of 3. method of heterogeneous network multiple interfaces information exchange according to claim 2, it is characterised in that step S2 In be equal to already present kind of interface number and user for the default network segment number of heterogeneous network and prepare the kind of interface number sum expanded.
- 4. according to a kind of method of any described heterogeneous network multiple interfaces information exchange in claim 1,2 or 3, its feature exists In the subnet in step S3 under the same network segment of the interface assignment of same type.
- A kind of 5. method of heterogeneous network multiple interfaces information exchange according to claim 1, it is characterised in that step S6 Described in packet the content of data segment put in order and be followed successively by transmission interface index, receiving interface IP address, the information content.
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