CN102546477B - Multifunctional gateway for distributed networked embedded system - Google Patents
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Abstract
The invention discloses a multifunctional gateway for a distributed networked embedded system, which is used for flexibly realizing communication between a plurality of distributed networked embedded systems and a plurality of public basic networks through a plurality of access ways. A method for the multifunctional gateway comprises the following steps of: receiving first data transmitted by a wireless wide area network or a wireless personal network and the like by using a protocol conversion module, performing protocol analysis on the first data by adopting a first protocol type, acquiring a business processing message and intermediate data represented in a unique format, and transmitting to a business processing module; receiving a business processing result transmitted by the business processing module, encapsulating the business processing result into second data with a second protocol type, and transmitting to the wireless wide area network or the wireless personal network and the like; and performing business processing by using the business processing module according to the business processing message and the intermediate data, acquiring a business processing result and transmitting to the protocol conversion module. Due to the adoption of the multifunctional gateway, communication between the plurality of distributed networked embedded systems and the plurality of public basic networks through the plurality of access ways can be realized flexibly.
Description
Technical field
The present invention relates to distributed networked embedded system, relate in particular to a kind of Multifunctional gateway of distributed networked embedded system.
Background technology
One of typical case's application of distributed networked embedded system is wireless sensor network (WSN).Gateway in distributed networked embedded system, is mainly the protocol conversion realizing between distributed networked embedded system and other network, realizes the connection of multiple network.
Mostly the gateway of distributed networked embedded system is the mutual conversion of two kinds of agreements at present, as the wireless sensor network gateway based on code division multiple access (CDMA) technology, the wireless sensor network gateway based on GPRS (GPRS), the wireless sensor network gateway based on Ethernet (ETHERNET) etc., it is single that these gateways adapt to scenes, signal that can not flexible access multiple network agreement.
The application system in some field, is the huge system consisting of a plurality of distributed networked embedded systems, as the hydrographic data gathering system in water utilities monitoring field.Article one, the basin in river is very wide, need to dispose a plurality of distributed networked embedded systems, and the access way that each distributed networked embedded system can be chosen is not quite similar again, it can be GPRS network access, can be WLAN (WLAN) access, can be also Ethernet (ETHERNET) access etc.Further, the data on each distributed networked embedded system are correlated with, and require to have strict timing tracking accuracy.
Therefore, a kind of Multifunctional gateway need to be provided, by plurality of access modes, realize interconnecting of multiple distributed networked embedded system (as wireless sensor network, field bus system etc.) and multiple public basic network (if internet, private network, cable broadband network, ADSL net, WiMAX are as WiFi and WiMax, various mobile communications networks etc.) flexibly.
Summary of the invention
Technical problem to be solved by this invention is the Multifunctional gateway that a kind of distributed networked embedded system need to be provided, and realizes interconnecting of multiple distributed networked embedded system and multiple public basic network flexibly by plurality of access modes.
In order to solve the problems of the technologies described above, the invention provides a kind of Multifunctional gateway of distributed networked embedded system, comprise protocol conversion module and Service Processing Module, wherein:
Described protocol conversion module, be used for receiving wireless wide area network, Wireless Personal Network, Ethernet, fieldbus or external equipment and send the first data, adopt the first protocol type to carry out protocol analysis to described the first data, the intermediate data that obtains Business Processing message and adopt consolidation form to represent sends to described Service Processing Module; Receive the service processing result that described Service Processing Module sends, with second protocol type, described service processing result is packaged into the second data, to described wireless wide area network, Wireless Personal Network, Ethernet, fieldbus or external equipment, send;
Described Service Processing Module, for carrying out Business Processing according to described Business Processing message and intermediate data, obtains described service processing result and sends to described protocol conversion module.
Preferably, this Multifunctional gateway comprises:
The first common interface module, for accessing described wireless wide area network;
The second common interface module, for accessing described Wireless Personal Network;
Ethernet interface module, for accessing described Ethernet;
Fieldbus interface module, for accessing described fieldbus;
Peripheral Interface module, for connecting described external equipment.
Preferably, the described wireless wide area network of described the first common interface module access comprises at least one in GPRS network, third generation mobile network, wireless fidelity network and multi-carrier-wave wireless information local loop network.
Preferably, the described Wireless Personal Network of described the second common interface module access comprises at least one in ZigBee-network and wireless high-speed addressable remote transducer protocol network.
Preferably, described the second common interface module is for accessing described Wireless Personal Network with the standard frequency of 2.4G hertz or the standard frequency of 433M hertz.
Preferably, this Multifunctional gateway also comprises:
Network management module, is connected with described the second common interface module, for the data acquisition node to each distributed networked embedded system, manages, and each distributed networked embedded system network is carried out to topology control and routing algorithm control.
Preferably, this Multifunctional gateway further comprises:
Time synchronized module, for carrying out being synchronously connected to the operating time of each distributed networked embedded system inside of described Multifunctional gateway according to the time service information of GPS (Global Position System).
Preferably, described time synchronized module comprises receiving element and lock unit, wherein:
Described receiving element, for receiving described time service information;
Described lock unit, for carrying out described synchronous according to described time service information to being connected to the operating time of each distributed networked embedded system inside of described Multifunctional gateway.
Preferably, described receiving element comprises GPS receiving element, Big Dipper receiving element, GLONASS (GLONASS) receiving element or Galileo receiving element.
Preferably, this Multifunctional gateway further comprises:
Handover module, it is for realizing the switching being connected between distributed networked embedded system and host computer, Ethernet or wireless wide area network.
Preferably, described protocol conversion module comprises abstraction unit, analytic unit and encapsulation unit, wherein:
Described abstraction unit, for according to the corresponding relation of described the first common interface module, the second common interface module, ethernet interface module, fieldbus interface module and Peripheral Interface module and protocol type, obtains described the first protocol type;
Described analytic unit, for according to described the first data being carried out to protocol analysis with corresponding the first protocol stack of described the first agreement, obtains described Business Processing message and described intermediate data;
Described encapsulation unit, receive the described service processing result that described Service Processing Module sends, utilize with the corresponding described second protocol stack of described second protocol described service processing result is encapsulated, obtain described the second data and send by described the first common interface module, the second common interface module, ethernet interface module, fieldbus interface module or Peripheral Interface module.
Compared with prior art, the present invention can realize interconnecting of multiple distributed networked embedded system and multiple public basic network by plurality of access modes flexibly.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms a part for specification, for explaining technical scheme of the present invention, does not form the restriction to technical solution of the present invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the composition schematic diagram of embodiment of the present invention Multifunctional gateway;
Fig. 2 is the composition schematic diagram of protocol conversion module in the embodiment of the present invention.
Embodiment
Below with reference to drawings and Examples, describe embodiments of the present invention in detail, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
Embodiment mono-, distributed networked embedded system Multifunctional gateway
As shown in Figure 1, Multifunctional gateway of the present invention mainly comprises the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114, Peripheral Interface module 115, protocol conversion module 121, Service Processing Module 122, memory module 130, human-machine interface module 140, network management module 150 and power module (not shown) etc., wherein:
The first common interface module 111, be used for accessing GPRS, third generation mobile network (3G), Wireless Fidelity (Wireless Fidelity, WiFi) network and multi-carrier-wave wireless information local loop (Multi-Carrier Wireless Information Local Loop, McWill) at least one network in the wireless wide area network such as network, carries out transfer of data with wireless wide area network;
The second common interface module 112, for accessing at least one network of the Wireless Personal Networks such as ZigBee and wireless high-speed addressable remote transducer agreement (WirelessHART), carries out transfer of data with Wireless Personal Network;
Ethernet interface module 113, for accessing Ethernet;
Fieldbus interface module 114, for accessing the fieldbus such as Modbus, RS485;
Peripheral Interface module 115, for connecting various external equipments, such as being or combination in any at present popular RS232, universal asynchronous serial interface (as UART interface) and USB etc.;
Protocol conversion module 121, with the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114 and Peripheral Interface module 115 are connected, be used for from the first common interface module 111, the second common interface module 112, ethernet interface module 113, in fieldbus interface module 114 or Peripheral Interface module 115, receive the first data, according to first protocol stack corresponding with the first protocol type of this locality storage, these first data are carried out to protocol analysis, obtain Business Processing message, the intermediate data that adopts consolidation form to represent sends to Service Processing Module 122, Business Processing message wherein comprises query messages, order, control message or data fusion message, and receive the service processing result of Service Processing Module 122 feedback, determine the second protocol stack of storing according to this locality after second protocol type, with second protocol type, this service processing result is packaged into the second data, is transmitted to the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114 and Peripheral Interface module 115,
Service Processing Module 122, with the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114, Peripheral Interface module 115 and protocol conversion module 122 are connected, for passing through the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114 or Peripheral Interface module 115, according to Business Processing message and intermediate data, carry out authentication and service adaptation and the Business Processing such as reply, obtain service processing result and send to protocol conversion module 121,
If query messages, Service Processing Module 122 is for carrying out legitimacy authentication to user, legal according to the query argument judgement query type in query messages and inquiry validity, determine whether to carry out that service adaptation is replied or whether carry out querying command and assign, if the too frequent Ze Xiang of inquiry administrative center sends validated user, access frequent message; If user is non-, rule refusal provides service, and Bing Xiang administrative center sends disabled user's access message and carries out alarm;
If order or control message, Service Processing Module 122 is for carrying out legitimacy authentication to user, judgement user's legitimacy and control authority, if destination address legal and order or control message is to net interior data acquisition node direct forward command or control message; If destination address legal and order or control message is gateway itself, at gateway local, carry out the operations such as decoding, configuration; If the non-rule denial of service of user, Bing Xiang administrative center sends and is subject to the alarm that disabled user controls;
If data fusion business, Service Processing Module 122, for judging the legitimacy of the data acquisition node of distributed embedded systems, judges whether it belongs to the topology of gateway, if not rule is reported and submitted the alarm of illegal node request access as administrative center;
Memory module 130, be connected with protocol conversion module 121 and Service Processing Module 122, for storage management program, protocol convertor and authentication procedure etc., also for storing the business datum of data transmission procedure, for Service Processing Module 122, carry out service adaptation to reply;
Human-machine interface module 140, is connected with protocol conversion module 121 and Service Processing Module 122, for the Presentation Function of system debug information and application message etc. is provided, accepts user's the operations such as option and installment; More preferably, can adopt can input type human-machine interface module, as touch-screen etc.;
Network management module 150, is connected with the second common interface module 112, for the data acquisition node to each distributed networked embedded system, manages, and each distributed networked embedded system network is carried out to topology control and routing algorithm control;
Power module, for the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114, Peripheral Interface module 115, protocol conversion module 121, Service Processing Module 122, memory module 130, human-machine interface module 140 and network management module 150 etc. provide energy support, for each part provides suitable operating voltage, ensure the normal work of each part.
In a practical application, above-mentioned the first common interface module 111 can comprise GPRS module, and it realizes the communication of wireless sensor network and wireless wide area network.GPRS has that wide coverage, transfer of data are fast, the high communication quality, the always online and feature such as charge by flow, support ICP/IP protocol, can be directly and Internet net interconnecting, without the switching through other networks (as public telephone network), efficiency of transmission is high.
In a practical application, above-mentioned the second common interface module 112 is for the standard frequency with 2.4G hertz (Hz) or with the standard frequency access Wireless Personal Network of 433MHz.
Above the first common interface module 111, the second common interface module 112, ethernet interface module 113, fieldbus interface module 114 are by pluggable module interfacing, by on device, realize a plurality of can connecting-disconnecting interface, support existing various radio-frequency module, interface module etc.Wherein, the first common interface module 111, according to the interface type design of existing wide area network access module, can be selected serial ports, USB interface etc.; The second common interface module 112, according to the interface of existing various Wireless Personal Network radio frequency chips, is mainly RS232, UART at present; Fieldbus interface module 114 is mainly RS485 and Modbus interface etc.
In above-mentioned Peripheral Interface module 115, RS232 interface is for providing the RS232 connected mode of wireless sensor network and peripheral hardware, universal asynchronous serial interface is for providing the universal asynchronous transmission connected mode of wireless sensor network and peripheral hardware, is used for that gateway support is connected with the direct RS232 of host computer or universal asynchronous serial interface connection.
Above-mentioned memory module 130 can be to comprise read-only memory (ROM), random asccess memory (RAM), flash memory (FLASH), in the present embodiment, read-only memory is for saved system preset parameter, random asccess memory is for caching system service data and program, and flash memory is preserved the firmware program of gateway.
Above-mentioned human-machine interface module 140 can be LCDs or liquid crystal touch screen, by LCDs or liquid crystal touch screen, can check the network connection of each sensor node in the configuring condition, each distributed networked embedded system of this gateway, the wireless mesh network of each sensor node self-organizing (MESH), is used for carrying out auxiliary diagnosis fault etc.
The power supply of the present embodiment can the solar powered unit of option and installment, and so the present embodiment has the applicable ability of field work.
Above-mentioned protocol conversion module 121, in a practical application of the present invention, adopts a kind of simple, efficient address mapping rule to complete the address transition of the first protocol type and second protocol type.In this practical application, in model various protocol types and each distributed networked embedded system, the corresponding relation of the address of each data acquisition node, realizes local logical mappings.Each data acquisition node sequential encoding uniquely in distributed networked embedded system, when carrying out protocol conversion, by the address of data acquisition node in distributed networked embedded system (corresponding with coding) directly and the sign of distributed networked embedded system (can referred to as subnet number) splicing, form the part address in the first protocol type after changing.Otherwise, then be transformed into the process of second protocol type from the first protocol type, can from the part address of the first protocol type, obtain the data acquisition node address corresponding with coding in distributed networked embedded system.Need to set up with existing address mapping table, search, renewal and memory address mapping table compare, and saves in a large number calculation resources and storage resources, realized fast address mapping.
The first data that distributed networked embedded system gathers, Multifunctional gateway through the present embodiment carries out after protocol conversion, pass through or be transferred to host computer without wide area network, the operating state data of data acquisition node in each distributed networked embedded system, after the Multifunctional gateway of the present embodiment, pass through or be transferred to host computer without wide area network.Host computer through or without wide area network, need to send to the work order of data acquisition node in each distributed networked embedded system and/or state configuration data to forward by the Multifunctional gateway of the present embodiment, work order is wherein used to indicate how image data of data acquisition node, and state configuration data are wherein used to indicate data acquisition node and how adjust operating state.
The secure authentication that the present embodiment has been realized Multifunctional gateway by above-mentioned Service Processing Module 122 is managed, the service-user of inquiring about by this Multifunctional gateway is registered and authentication mechanism, avoided malice for each data acquisition node inside the Pass multifunctional mesh being carried out to exhaustion attacks (assailant take the inquiry that bandwidth consumed and data acquisition node energy are object), such as taking to limit request number that same request address sends etc., realized.Above-mentioned Service Processing Module 122 can be by safeguarding a data collection station registration table, preferably, also can be by connecting by password between data collection station and gateway, can also frequently access by restriction etc., prevent the access of invalid data acquisition node and repeat mala fide to send data, cause Multifunctional gateway processing redundancy hash always and cannot carry out other Business Processing.
Fig. 2 is the composition schematic diagram of protocol conversion module 121 in the present embodiment.As shown in Figure 2, above-mentioned protocol conversion module 121 specifically comprises wireless wide area network protocol stack, Wireless Personal Network protocol stack, Ethernet protocol stack etc. numerous protocol stacks, and Fig. 2 illustrates with WLAN protocol stack 210, Internet protocol stack 220 and WSN protocol stack 230.Protocol conversion module 121 also comprises abstraction unit 240, analytic unit 250 and encapsulation unit 260, and this abstraction unit 240, analytic unit 250 and encapsulation unit 260 can be referred to as multiprotocol conversion engine.The first data of WSN network are converted to the second data instance of Internet network, describe, in protocol conversion module 121:
Abstraction unit 240, with WLAN protocol stack 210, each protocol stack such as Internet protocol stack 220 and WSN protocol stack 230 connects, be used for according to the first common interface module 111 and second communication interface of common interface module 112 and the corresponding relation of protocol type (other embodiment, comprise ethernet interface module 113, the communication interface of fieldbus interface module 114 and Peripheral Interface module 115 and the corresponding relation of protocol type), WSN network interface from the second common interface module 112 is received the first data, obtaining the communication protocol type that the first data adopt is WSN procotol (the first protocol type), the communication interface of different agreement type is corresponding with each protocol stack, and the communication interface of different agreement type is corresponding with corresponding hardware driving again, so abstraction unit 240 can drive connection corresponding to each protocol stack by the network hardware of different agreement type,
Analytic unit 250, be connected with WLAN protocol stack 210, Internet protocol stack 220, WSN protocol stack 230 and abstraction unit 240, for according to WSN agreement, the first data being carried out to protocol analysis, the intermediate data that obtains data fusion message (Business Processing message) and adopt consolidation form to represent; Data fusion message and intermediate data are sent to Service Processing Module 122;
Encapsulation unit 260, be connected with each protocol stacks such as WLAN protocol stack 210, Internet protocol stack 220 and WSN protocol stacks 230, receive the data fusion result (service processing result) of Service Processing Module 122 feedbacks, utilize Internet protocol stack (second protocol stack), adopt Internet agreement (second protocol type) to carry out the data encapsulation from link layer to physical layer to data fusion results, obtain the second data, and send by the Internet network interface in the first common interface module 111.
The authorizing procedure of above-mentioned Service Processing Module mainly comprises two parts, and a part is that user's authentication, a part is to netting the authentication of interior data acquisition node.According to network data, flow to calling of decision module.From PAN (Personal Area Network) interior nodes through gateway through/data without wide area network to upper computer end, need call Service Processing Module 122, inquire about legal node listing (list can only be configured by legal keeper), if in list, be legal; Otherwise be illegal, and illegal node is added to illegal node listing, Bing Xiang administrative center sends and finds illegal node messages.From host computer through/without wide area network outer net, flow into the data in net, invoke user Service Processing Module 122, the list of inquiry validated user, judgement access rights, if denial of service of illegal user, Bing Xiang administrative center reports and submits receives illegal user's access or the message of controlling; If the unauthorized access rule in validated user offence access rights is as too frequent in access etc., to administrative center, reports and submits the message of validated user unauthorized access, otherwise serve.
For improving the fail safe of network, the registration of validated user, the modification of validated user list and the modification of legal node listing, be configured by legal keeper.Legal node listing is automatically added, deletes, is revised by network topology, is also adapted to the present invention.
Multifunctional gateway of the present invention, in another embodiment, also comprise time synchronized module, for carrying out synchronously (such as can synchronously becoming world concordant time (UTC) etc.) according to the time service information of GPS (Global Position System) to being connected to the inner operating time of each distributed networked embedded system (being also connected to the all-ones subnet of this gateway) of this gateway, and for accurate acquisition time stamp;
Above-mentioned time synchronized module can comprise receiving element and lock unit, wherein:
Receiving element, for receiving the time service information of GPS (Global Position System);
Lock unit, carries out being synchronously connected to the operating time of each distributed networked embedded system inside of this gateway for the time service information receiving according to receiving element, and for accurate acquisition time stamp.
Above-mentioned receiving element is global navigation satellite module.Concrete, can be GPS receiving element (for accessing GPS Position Fixing Navigation System), can be Big Dipper receiving element (for accessing Big Dipper Position Fixing Navigation System), can be GLONASS (GLONASS) receiving element (for accessing GLONASS Position Fixing Navigation System), can be also Galileo (Galileo) receiving element (for accessing Galileo Position Fixing Navigation System).
Multifunctional gateway of the present invention, in other embodiments, can also comprise handover module, and it is for realizing the switching being connected between distributed networked embedded system and host computer, Ethernet or wireless wide area network.
Realize the switching of following three connection modes:
(1) be switched to local distributed networked embedded system to the connection of host computer; Local WSN is by the various Peripheral Interfaces of above-described embodiment, as RS232 interface, UART interface or Ethernet interface are directly connected with host computer;
(2) be switched to local distributed networked embedded system to the connection of Ethernet; Local WSN is connected with switch by Ethernet network interface, access network based on ethernet;
(3) be switched to local distributed networked embedded system to the connection of wireless wide area network, local WSN is by access public network or the private networks such as GPRS of the first common interface module.
When carrying out the switching of above three patterns, on hardware, can realize by wire jumper, on software can by can cutting, assemblnig loading mode realizes, according to real network environmental selection mode of operation.Such as, when using GPRS access way, can in hardware circuit board, Ethernet access way be masked, and in the protocol conversion moduleization assembling stage, only load the WSN protocol stack of GPRS protocol processes part and autonomy-oriented design.
In the prior art, gateway is application-oriented, only can realize the mutual conversion of a pair of agreement.Embodiments of the invention have been realized the mutual conversion of various protocols, according to actual scene, can select the network insertions such as 3G, GPRS, WLAN, LAN, WIFI, ZigBee, also can select the host computers such as UART, USB directly to access, greatly strengthen practicality of the present invention.Host computer can only be connect compared to existing technology, can only meet GPRS or the gateway of Ethernet can only be connect, embodiments of the invention improve the adaptability of Multifunctional gateway, can be by the network size of wired mode and/or wireless mode flexible expansion network embedded system.In power consumption, the embodiment of the present invention is managed by acknowledgement mechanism and the secure authentication of service adaptation, reduces the energy consumption of the whole network on network layer, has extended network life.And, service adaptation acknowledgement mechanism adapts to the feature of distributed networked embedded system finite energy, based on historical data and business demand, carry out from replying, reduced distributed networked embedded system Intranet network traffics, reduced the power consumption of distributed networked embedded system.
The embodiment of Multifunctional gateway disclosed by the invention, can realize the function that distributed networked embedded system is accessed in many ways to Internet, can realize the protocol conversion between heterogeneous networks, can realize secure authentication management.Multifunctional gateway disclosed by the invention, can realize the maintenance of distributed network, comprises topological Partial controll and route etc., has realized the exact time synchronization of distributed subnet.
In synchronous accuracy, existing wireless sensor network be all synchronously based on gateway local real-time clock, synchronous by sending the data of the mode of synchronization packets in netting, and the synchronization mechanism based on Internet carries out the clock synchronous of the whole network.This method of synchronization is not suitable for the situation that a plurality of distributed networks and built-in network have relevance.And the gateway providing by the embodiment of the present invention, can realize the precise synchronization of distributed network, make the data on distributed network reach the synchronous of millisecond (ms) level, and synchronometer point counting is fitted on to corresponding special chip, saved the computational resource of processor, solve the synchronization challenges of how distributed embedded network system, can meet the application demand that wireless sensor network region is wide, requirement of real-time is high.
In fail safe, existing wireless sensor network gateway is not considered that network that illegal user's anonymity inquiry causes can't bear the heavy load and is caused network paralysis and the situation of normal data acquisition service cannot be provided, and the illegal node of wireless sensor network Intranet sends the situation that data take gateway continuously.The embodiment of the present invention utilizes gateway to have the advantage of external application power supply more, at gateway, realize authentication management, both guaranteed the safety of network, computational resource and the power resource of wireless sensor node have been reduced again, extend the service time of wireless sensor node, thereby extended the life-span of whole wireless sensor network.And secure authentication management allows the packet of license pass through, and to not having the packet of license to tackle and abandon, has improved the degree of safety of WSN Intranet.
Although the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technical staff in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (9)
1. a Multifunctional gateway for distributed networked embedded system, is characterized in that, comprises protocol conversion module and Service Processing Module, wherein:
Described protocol conversion module, be used for receiving wireless wide area network, Wireless Personal Network, Ethernet, fieldbus or external equipment and send the first data, adopt the first protocol type to carry out protocol analysis to described the first data, the intermediate data that obtains Business Processing message and adopt consolidation form to represent sends to described Service Processing Module; Receive the service processing result that described Service Processing Module sends, with second protocol type, described service processing result is packaged into the second data, to described wireless wide area network, Wireless Personal Network, Ethernet, fieldbus or external equipment, send;
Described Service Processing Module, for carrying out Business Processing according to described Business Processing message and intermediate data, obtains described service processing result and sends to described protocol conversion module;
This Multifunctional gateway comprises:
The first common interface module, for accessing described wireless wide area network;
The second common interface module, for accessing described Wireless Personal Network;
Ethernet interface module, for accessing described Ethernet;
Fieldbus interface module, for accessing described fieldbus;
Peripheral Interface module, for connecting described external equipment;
This Multifunctional gateway also comprises:
Network management module, is connected with described the second common interface module, for the data acquisition node to each distributed networked embedded system, manages, and each distributed networked embedded system network is carried out to topology control and routing algorithm control.
2. Multifunctional gateway according to claim 1, is characterized in that:
The described wireless wide area network of described the first common interface module access comprises at least one in GPRS network, third generation mobile network, wireless fidelity network and multi-carrier-wave wireless information local loop network.
3. Multifunctional gateway according to claim 1, is characterized in that:
The described Wireless Personal Network of described the second common interface module access comprises at least one in ZigBee-network and wireless high-speed addressable remote transducer protocol network.
4. Multifunctional gateway according to claim 1, is characterized in that:
Described the second common interface module is for accessing described Wireless Personal Network with the standard frequency of 2.4G hertz or the standard frequency of 433M hertz.
5. Multifunctional gateway according to claim 1, is characterized in that, this Multifunctional gateway further comprises:
Time synchronized module, for carrying out being synchronously connected to the operating time of each distributed networked embedded system inside of described Multifunctional gateway according to the time service information of GPS (Global Position System).
6. Multifunctional gateway according to claim 5, is characterized in that, described time synchronized module comprises receiving element and lock unit, wherein:
Described receiving element, for receiving described time service information;
Described lock unit, for carrying out described synchronous according to described time service information to being connected to the operating time of each distributed networked embedded system inside of described Multifunctional gateway.
7. Multifunctional gateway according to claim 6, is characterized in that:
Described receiving element comprises GPS receiving element, Big Dipper receiving element, GLONASS GLONASS receiving element or Galileo receiving element.
8. Multifunctional gateway according to claim 1, is characterized in that, this Multifunctional gateway further comprises:
Handover module, it is for realizing the switching being connected between distributed networked embedded system and host computer, Ethernet or wireless wide area network.
9. Multifunctional gateway according to claim 1, is characterized in that, described protocol conversion module comprises abstraction unit, analytic unit and encapsulation unit, wherein:
Described abstraction unit, for according to the corresponding relation of described the first common interface module, the second common interface module, ethernet interface module, fieldbus interface module and Peripheral Interface module and protocol type, obtains described the first protocol type;
Described analytic unit, for according to described the first data being carried out to protocol analysis with corresponding the first protocol stack of described the first agreement, obtains described Business Processing message and described intermediate data;
Described encapsulation unit, receive the described service processing result that described Service Processing Module sends, utilize with the corresponding described second protocol stack of described second protocol described service processing result is encapsulated, obtain described the second data and send by described the first common interface module, the second common interface module, ethernet interface module, fieldbus interface module or Peripheral Interface module.
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| CN102546477A (en) | 2012-07-04 |
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