CN100579052C - Intelligent network bridge for network element communication in different segments and its data transmission method - Google Patents

Intelligent network bridge for network element communication in different segments and its data transmission method Download PDF

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CN100579052C
CN100579052C CN 200710178546 CN200710178546A CN100579052C CN 100579052 C CN100579052 C CN 100579052C CN 200710178546 CN200710178546 CN 200710178546 CN 200710178546 A CN200710178546 A CN 200710178546A CN 100579052 C CN100579052 C CN 100579052C
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device
field
network
bridge
background
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CN101170480A (en
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渊 张
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中兴通讯股份有限公司
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Abstract

The invention discloses an intelligent network bridge and a data transmission method for the communication in the different network segments, which is used for the engineering system including a field operation equipment and a background monitoring equipment, the field operation equipment and the background monitoring equipment are respectively operated in the different network segments, wherein, the method includes: step 1, the intelligent network bridge receives the network connection requests which are sent by the background monitoring equipment and establishes the connection relationship between the field operation equipment and the background monitoring equipment according to the field operation equipment which is interested by the background monitoring equipment and is obtained by the network connection request; step 2, the intelligent network bridge receives the data packets which are sent by the field operation equipment to carry out the sealing of the data packets and forwards the data packets after the sealing to the background monitoring equipment which has the connection relationship with the field operation equipment. The usage of the invention in the industrial system can realize the high efficient, stable and convenient multi-to-multi communication between the field operation equipment and the background monitoring equipment.

Description

用于不同网段间网元通信的智能网桥及其数据传输方法 Intelligent network bridge for data transmission method and network element communication between different network segments

技术领域 FIELD

本发明涉及网络通信领域,特别是涉及一种用于不同网段间网元通信的智能网桥及其数据传输方法。 The present invention relates to the field of network communication, particularly to a data transmission method and intelligent network bridge A network element for a communication between different network segments.

背景技术 Background technique

在目前的工程系统中,往往将设备分成现场操作设备和后台监控设备,各自运行于不同的网段之中。 In the current engineering systems tend to operate equipment and devices into the field background monitoring devices, each operable in different segments. 而当这两个网段中的设备要发生多对多的通信时, 往往统一通过一个转发器或称网桥来实现数据包的转发。 And when these two segments of the equipment-many communication to take place, often known as a bridge to achieve unity or data packets transmitted via a transponder.

现场操作设备和后台监控设备相互间要传输的数据包数量非常庞大,因此,作为沟通两个网段的枢纽,网桥的任务往往会非常的繁重。 On-site operation of equipment and background monitoring devices among each other to transfer very large number of packets, therefore, the two networks as a communication hub, bridge task tend to be very heavy. 此外,在实际的工程系统中,往往会出现许多不可预知的异常情况,因此,也需要网桥能够对于现场操作设备的运行状况进行监测,能够对于异常状况进行相应的处理。 In addition, in the actual engineering systems, often there will be many exceptions unpredictable, therefore, we need to be able to bridge health monitoring for field operations equipment, can make the appropriate treatment for abnormal conditions.

目前的转发器或者网桥一般采用的工作模式是无差别的接收所有现场操作设备的所有报文,并转发给监控设备。 The current repeater or bridge mode of operation used is generally indistinguishable receive all messages for all field operations equipment, and forwarded to the monitoring equipment. 同时无差别的接收所有后台控制设备的控制命令并透明传输给现场操作设备。 Undifferentiated while all background control command receiving device, and a transparent transfer to the field operating device.

这种设计还有一些不足的情况,首先,网桥作为网络传输的枢纽,其作用举足轻重,无差别的接收处理所有的数据包会加重网桥的负担,造成在网桥的网络带宽和处理能力上不必要的浪费。 This design there are some shortcomings in the case, first, as a hub bridge network transmission, and its pivotal role, non-discriminatory treatment of all received packets will increase the burden on the bridge, resulting in network bandwidth and processing power bridge on unnecessary waste. 其次,在现场操作设备和后台监控设备相互间需要建立多对多通信的情况下,来自监控层的许多控制命令可能是相互矛盾的,比如某个监控设备要关闭与某个操作设备的网络连接,而另一个监控设备恰恰要保持与这个操作设备的网络连接。 Secondly, in the case of field operations equipment and background monitoring equipment between the need to establish mutual-many communication, many control commands from the control layer may be contradictory, such as a monitoring device connected to the network to shut down an operation of the device and the other monitoring equipment just to stay connected to the network to operate the equipment. 如果无差别的向现场操作设备转发来自后台监控设备的控制命令,会影响整个网络整体上的工作效能。 If the forwarding control command from the undifferentiated background monitoring equipment to the field operation of the device will affect the overall effectiveness of the work on the entire network.

在专利号为200510090811的中国专利"智能网桥及其实现网络隔离控制的方法"中,提出了一种利用智能网桥实现网络隔离控制的方法。 Patent No. 200 510 090 811 Chinese patent "smart bridge their way to network isolation control" in the proposed method of using intelligent bridge control for network isolation. 此发明包括处理器、存储器、组态控制模块、若干网络接口、和所述网络接口具有相同个数的网络通信模块。 This invention includes a processor, memory, configuration control module, a plurality of network interface, and the network interface having the same number of network communication module. 此发明可以对不同网段的所有报文进行监听、处理和转发,并可以根据组态信息来控制报文转发,隔离大部分在其他网段无效的报文。 This invention can be carried out on all packets of different segments of monitoring, processing and forwarding, and packet forwarding can be controlled depending on the configuration information, in most other segments isolated invalid packets.

这种网桥仍然存在需要改进的地方,在实际应用中,监控设备需要监控当前现场所有的操作设备的情况仍属少数。 This bridge still exists room for improvement, in practice, the monitoring device needs to monitor the current situation of the scene all operating equipment still a minority. 大多数场合下,监控设备只是有选择的挑选少数几个现场操作设备进行监控。 In most cases, monitoring equipment have a choice but to pick a handful of field operations for surveillance. 无差别的接收所有设备的所有报文会不必要的加重作为传输枢纽的网桥的工作负担。 Undifferentiated receive all equipment for all packets will unnecessarily increase the workload as a transport hub of the bridge.

此外,由于在实际的工程系统中,会发生许多诸如设备死机,通讯链路故障等不可预知的异常情况。 In addition, since the actual engineering systems, many crashes, communications links, such as equipment and other anomalies occur unpredictable. 无论是现场操作设备还是后台监控设备,哪一个设备出现异常都可能会影响整个网络的运行,至少也会不必要地占用网桥的资源。 Whether on-site operating equipment or background monitoring device, which device is abnormal are likely to affect the operation of the entire network will unnecessarily occupy at least resources to bridge. 长时间与一个已经死机的现场操作设备保持网络连接,或者是向一个己经关闭了的监控设备转发数据包。 A network connection with a long period of time has been crash site operation device, or shut down to have a monitoring device to forward the packet. 不但毫无意义,也造成宝贵的网桥资源的浪费。 Not only pointless, but also a waste of valuable resources of the bridge. 以上发明的缺点在于并没有充分考虑到在工业应用中的实际情况,对于在实际工程系统中可能出现的诸如待处理的数据包数量庞大,设备死机链路中断,控制消息相互矛盾等情况缺乏考虑。 Disadvantage of the above invention is not fully take into account the actual situation in industrial applications, such as for a huge potential to be processed in the actual engineering system the number of packets, the device link failure crash, a control message like the absence of conflicting considerations .

发明内容 SUMMARY

本发明所要解决的技术问题在于提供一种用于不同网段间网元通信的智能网桥及其数据传输方法,用于在工业系统中实现现场操作设备与后台监控设备之间高效稳定且便捷的多对多通信。 The present invention solves the technical problem is to provide a data transmission method and intelligent network bridge A network element for a communication between different networks for efficient and stable operation of the device between the background monitoring field devices in industrial systems and convenient many to many communication.

为了实现上述目的,本发明提供了一种用于不同网段间网元通信的智能网桥,用于包括现场操作设备和后台监控设备的工程系统,所述现场操作设备、 所述后台监控设备各自运行于不同的网段,其特征在于,该智能网桥包括: To achieve the above object, the present invention provides an intelligent network element for a communication bridge between different networks, and the operation device comprises a field for background monitoring equipment engineering system, the operating device field, the background monitoring device each running on different network segments, wherein, the smart bridge comprising:

网络通信模块,用于实现所述现场操作设备、所述后台监控模块之间的数据传输; Network communication module for enabling the operation of field device, the data transmission between the background monitoring module;

数据处理模块,连接所述网络通信模块,用于处理所述后台监控设备发送的网络连接请求,根据所述网络连接请求获取所述后台监控设备感兴趣的现场操作设备,建立所述现场操作设备、所述后台监控模块之间的连接关系;接收所述现场操作设备发送的数据包,对所述数据包进行封装,并将封装后的数据包转发给与所述现场操作设备存在连接关系的后台监控设备。 Data processing module, connected to the network communication module, a network connection request transmission processing for the background monitoring apparatus according to the network connection request acquisition apparatus operating field background monitoring apparatus of interest, to establish the operating device field the connection relationship between the background monitoring module; receiving said data packet sent by the operating field, the encapsulated data packet, and forwards the connection relation exists to give the field operation device encapsulated data packet background monitoring equipment.

所述的用于不同网段间网元通信的智能网桥,其中,还包括: For the intelligent network bridge between different communication network element, wherein, further comprising:

硬件承载模块,用于运行所述网络通信模块、所述数据处理模块。 Carrier module hardware, for operating the network communication module, the data processing module. 所述的用于不同网段间网元通信的智能网桥,其中,所述硬件承载模块为配置有双网卡的计算机或包含有处理器、存储器和网络驱动设备的嵌入式设 For the intelligent network bridge communication between different network element, wherein, said hardware carrier configured with a computer module or a dual-card provided with an embedded processor, memory and a network device driver

所述的用于不同网段间网元通信的智能网桥,其中,所述数据处理模块以交换矩阵形式记录/保存所述现场操作设备与所述后台监控设备之间的连接关 For the intelligent network bridge communication between different network element, wherein the data processing module in a switching matrix in the form of a recording / save off the connection between the field device and the operation of the background monitoring device

为了实现上述目的,本发明提供了一种应用智能网桥实现数据传输的方法,用于包括现场操作设备和后台监控设备的工程系统,所述现场操作设备、 所述后台监控设备各自运行于不同的网段,其特征在于,该方法包括: To achieve the above object, the present invention provides a method of data transmission bridge application intelligence for operating devices including field and background monitoring equipment engineering system, the operating device field, the background monitoring devices each operating in a different network segments, wherein, the method comprising:

步骤一,智能网桥接收由所述后台监控设备发送的网络连接请求,根据所述网络连接请求获取所述后台监控设备感兴趣的现场操作设备,并建立所述现场操作设备与所述后台监控设备之间的连接关系; A step, by the intelligent network bridge receives a connection request sent by the background monitor, according to the network connection request to acquire the background monitoring operation device field device of interest, and the establishment of the field device and the operation of the background monitoring the connection between devices;

步骤二,所述智能网桥接收由所述现场操作设备发送的数据包,对所述数据包进行封装,并将封装后的数据包转发给与所述现场操作设备存在连接关系的后台监控设备。 Step two, the smart bridge receiver, the data packet encapsulated by the data packet sent by the operating field, and forwarding the encapsulated data packet field operating device is present to give the background monitoring apparatus connection relationship .

所述的实现数据传输的方法,其中,所述步骤一之前,进一步包括:启动所述智能网桥,完成所述智能网桥的初始化,并在针对所述后台监控设备的网络端口处侦听来自所述后台监控设备的网络连接请求的步骤。 The method according to data transmission, wherein, before the step a further comprises: activating the intelligent network bridge to complete the initialization of the smart bridge, the background and listens for a network monitoring device port step back from the network monitoring device connection request.

所述的实现数据传输的方法,其中,所述步骤一中,进一歩包括:所述智能网桥在接收到所述网络连接请求时,对所述后台监控设备进行鉴权,判断所述后台监控设备是否为有权用户的步骤,若有,则接纳所述网络连接请求;否则拒绝所述网络连接请求。 The method according to the data transmission, wherein, in said step a, into a ho comprising: upon receiving the smart bridge connection request to the network, for authenticating the background monitoring device determines the background monitoring equipment whether the user is entitled to step if so, to receive the network connection request; otherwise, reject the connection request to the network.

所述的实现数据传输的方法,其中,所述步骤一中,进一步包括: The method according to the data transmission, wherein, in said step a, further comprising:

当所述智能网桥接收到所述后台监控设备需要增加对指定现场操作设备的监测时,根据网桥内存中是否存在该指定现场操作设备的记录进行相应的处理: When the bridge receives the smart back to the monitoring device need to increase the field when the monitoring operation of the specified device performs corresponding processing according to whether or not the designated recording device is present in the operation field memory bridge:

若存在,则建立所述后台监控设备与该指定现场操作设备之间的连接关系;否则向该指定现场操作设备发送网络连接请求,并在所述网桥内存中增加对该指定现场操作设备的信息记录,再在所述网桥内存中建立所述后台监控设备与该指定现场操作设备之间的连接关系。 If present, to establish the connection between the monitoring device and the designated background field operation device; otherwise, the connection request to the network device sends the specified field operations, field operations and increases the device specified in the bridge memory recording information, and then create the connection between the monitoring device and the designated background field device operating in the bridge memory. 所述的实现数据传输的方法,其中,所述步骤一中,进一歩包括: The method according to the data transmission, wherein, in said step a, into a ho comprising:

当所述智能网桥接收到所述后台监控设备需要关闭指定现场操作设备的监测时,拆除网桥内存中所述后台监控设备与该指定现场操作设备之间的连接关系,并检索是否还有其他后台监控设备对该指定现场操作设备感兴趣: When the bridge receives the smart device to the need to turn off the background monitoring operations to monitor the specified field device, the connection between the removal of the background field monitoring device and the operating device specifies the memory bridge, and retrieves whether there other background monitoring equipment operating interest in the designated field devices:

若有,则保持与该指定现场操作设备之间的网络连接,维持相应的信息记录;否则关闭与该指定现场操作设备之间的网络连接,册lj除相应的信息记录。 If so, maintaining the network connection between the operating device specified field, to maintain the corresponding information recording; otherwise, closes the connection between the network and the operation field specifies the device corresponding to the information recording books lj addition.

所述的实现数据传输的方法,其中,所述歩骤二中,进一步包括:所述智能网桥对所述现场操作设备和/或所述后台监控设备的运行状况进行监控,当所述现场操作设备和/或所述后台监控设备出现异常状况时,断开与相应设备的网络连接并释放相关资源的步骤。 The method according to the data transmission, wherein said step of two ho, further comprising: a bridge for the smart field operating conditions of the operation device and / or the monitoring device to monitor the background, when the field when the operation device and / or the background abnormal condition monitoring device, disconnect and release the resources associated with the network the corresponding step of the device.

本发明的有益技术效果: Advantageous effects of the invention:

1) 通过一种类似交互矩阵的传输机制,支持现场操作设备和后台监控设备相互之间多对多的通信,作为沟通现场操作设备和后台监控设备的传输枢纽,保证了相互之间稳定高效、便捷的信息传输。 1) via a transmission mechanism similar to the interaction matrix, and the operation device supports background monitoring field devices communicate with each other many-site operation as a transmission apparatus and communication hub background monitoring equipment, to ensure the stable and efficient one another, convenient information transmission.

2) 因不是无差别地接收处理现场操作设备的所有报文,而只是接收处理后台监控设备感兴趣的现场操作设备的报文,所以在保证了后台监控设备监测需求的同时,节省了网络带宽,降低了网桥的工作负荷。 At the same time 2) because all the packets are not receiving treatment field to operate the equipment indiscriminately, but only to receive messages background monitoring process field device of interest to operate the equipment, so in the background monitoring to ensure the needs of the monitoring device, saving network bandwidth and reduce the work load of the bridge.

3) 对于后台监控设备和现场操作设备的运行状况进行监测,当某台设备出现异常时,网桥自行中断与它的网络连接并释放相关的资源;而对于来自后 3) conduct background monitoring for health facilities and on-site monitoring equipment operation, when the exception of a piece of equipment, the bridge itself breaks the connection to its network and releases associated resources; and for post from

台监控层,对可能相互冲突的控制消息进行处理,提高了网络整体上的工作效能。 Taiwan monitoring layer, the control of potentially conflicting messages are processed, improving the effectiveness of the work on the overall network.

以下结合附图和具体实施例对本发明进行详细描述,但不作为对本发明的限定。 The present invention will be described in detail in conjunction with the accompanying drawings and the specific embodiments, but not limit the present invention.

附图说明 BRIEF DESCRIPTION

图1为应用本发明的一种工程系统的示例图; FIG 1 is a diagram of an example of the engineering system of the present invention is applied;

图2为本发明采用的类似交换矩阵的数据传输原理示意图; FIG 2 is a schematic view similar to the principle of data transmission using switching matrix of the present invention;

图3为本发明的基本框架结构图; FIG 3 FIG basic framework of the present invention;

图4为本发明的基本工作流程图; Basic operation Figure 4 is a flow chart of the invention;

图5为本发明对外围设备运行状况进行监测并对异常情况进行处理的工作流程图。 5 operational status of peripheral device and abnormality monitoring processing performed an operation flowchart of the present invention. 具体实施方式 Detailed ways

下面结合附图和具体实施方式对本发明的技术方案作进一步更详细的描述。 Next, the technical solution of the present invention will be further described in more detail in conjunction with accompanying drawings and specific embodiments.

如图1所示,为应用本发明的一种工程系统的示例图。 As shown in FIG. 1, an engineering system for the application of the present invention is an example in FIG. 该图给出了主要应 The figure shows primarily

用于工程领域,主要是为现场操作设备10与后台监控设备20提供一个多对多信息交互的平台。 For engineering, mainly on-site operation device 10 and the background monitoring device 20 provides a platform for information exchange is many to many.

在图1中,整个工程系统包括:现场操作设备10 (现场操作设备1〜现场 In Figure 1, the entire engineering system comprising: 10 (field operation device operating device 1 ~ Field Field

操作设备n)和后台监控设备20 (后台监控设备l〜后台监控设备n),其中, n为大于2的自然数。 Operation device n) and background monitoring device 20 (the background monitoring apparatus l~ background monitoring device n), where, n is a natural number greater than 2.

现场操作设备10和后台监控设备20各自运行于不同的网段,网桥30对应两个不同的网段开放两个不同的网络接口。 Background field operating device 10 monitoring device 20 are each running on different network segments, the bridge corresponding to two different segments 30 open and two different network interfaces. 而对于现场操作设备io和后台监控设备20而言,他们只需要在统一的网络接口上建立网络连接,就可以与整个网络进行信息传输和交互,从而有利于整个工程系统的扩容与设备的自由增减。 For 20 field operations in terms of equipment io and background monitoring equipment, they only need to establish a network connection on a single network interface, can transmit information and interact with the entire network, thus facilitating the expansion of freedom and equipment throughout the engineering system increase or decrease.

如图2所示,为本发明采用的类似交换矩阵的数据传输原理示意图。 2, a schematic view similar to the present data transmission principle using the switching matrix of the present invention. 结合图1,由于在实际的工业系统中,每一后台监控设备20都可能要监测多个现场操作设备10,而每一个现场操作设备10也可能被多个后台监控设备20所监测,于是相互之间便形成了多对多的信息交互关系。 In conjunction with FIG. 1, since in practical commercial systems, each of the background monitoring device 20 may be monitored operation of a plurality of field devices 10, each operating a field device 10 may be a plurality of background monitoring the monitored device 20, then each it formed a many to many relationship between information exchange. 本发明利用交换矩阵来记录这种信息交互关系。 The present invention utilizes such information to record the switching matrix interactions.

每当收到某个现场操作设备10发来的数据包,网桥30将在交换矩阵中检索与此现场操作设备10存在连接关系的后台监控设备20,并将数据包封装后转发所有对此现场操作设备10感兴趣的后台监控设备20。 Whenever the operation device 10 receives an incoming field of data packet, the bridge 30 will retrieve background monitoring device 20 is connected to this relationship field operation device 10 is present in the switching matrix, and forwards the encapsulated packet to all this 10 interested in field operations equipment background monitoring device 20.

每当收到后台监控设备20需要增加对于某个现场操作设备10的监测时, 网桥30则会首先查询是否已经存在此现场操作设备10的记录,如果已存在, 则在内存中记录后台监控设备20与现场操作设备10之间的连接关系。 Whenever receive background monitoring device 20 needs to be increased to 10 when monitoring the operation of an on-site equipment, the bridge will be 30 first queries whether the existing record field operating device 10, if it already exists, then the background monitoring records in memory connection between the device 10 and field device 20 operation. 如果不存在,则向此现场操作设备IO发送网络连接请求,在内存中增加对于此现场操作设备10的记录,再在内存中记录后台监控设备20与现场操作设备10之间的连接关系。 If not, this field is sent to the operating device IO network connection request, to increase the recording device 10 for this operation in the field memory, and then recording a background connection relationship between the monitoring device 20 and 10 operate the field device in memory. 同样,每当收到后台监控设备20需要关闭/停止对于某个现场操作设备10的监测时,网桥30拆除这两者之间的连接关系,并检索是否仍然 Likewise, whenever the received background monitoring device 20 need to turn off / stop time for a field operation monitoring device 10, 30 demolished bridge the connection between the two, and retrieval is still

还有其他后台监控设备20对此现场操作设备10感兴趣,如果有,则网桥30 将仍然保持与此现场操作设备10的网络连接,维持它的信息记录。 There are other back-end monitoring equipment 20 10 site operators interested in this device, if so, the bridge 30 will remain on-site operation of this device connected to the network 10 to maintain its record information. 如果没有, 网桥30关闭与此现场操作设备10的网络连接,删除相应的信息记录。 If not, the bridge 30 is connected to this field network closing operation of device 10, deletes the corresponding record information.

在实际工程系统中,由于多个后台监控设备20相互之间往往会发出互相矛盾的指令,比如一个要求中断网络连接,而另一个要求保持网络连接。 In practical engineering system, since a plurality of background monitoring devices often conflicting issues an instruction 20 to each other, such as a network connection is interrupted required, while maintaining the other required network connection. 无论是透明传输这些控制命令,还是简单执行这些控制命令都会造成整个网络整体上工作性能的下降。 Whether it is transparent transmission of these control commands, or simply decline to perform work on the overall performance of the entire network can cause these control commands. 而本发明通过交换矩阵的采用,解决了这个问题,从而提高了整个网络的工作性能。 The present invention is employed by the switching matrix, to solve this problem, thereby improving the performance of the entire network.

如图3所示,是本发明的基本框架结构图。 As shown in FIG 3, the basic framework of the present invention of FIG. 该图给出了一种应用于工程系统且具有类似交换矩阵功能的智能网桥。 The figure shows a system used in engineering and a switching matrix having a similar function intelligent bridge.

当有后台监控设备20要停止对某个现场操作设备10的监测时,网桥30 拆除两者相互间的连接关系,査询信息记录,根据其他后台监控设备20的需求,判断否仍然需要保持与此现场操作设备IO之间的网络连接。 When there is background monitoring device 20 to stop the demolition connections between the two are on a field when the monitoring operation device 10, the bridge 30, query information record, according to the needs of other background monitoring device 20 determines whether still need to keep network connection between the operating device IO this field.

对所有与网桥30存在网络连接的设备(包括现场操作设备IO、后台监控设备20),网桥30定期发送心跳数据包,并要求对方在规定时间内返回一个应答消息。 30 bridges exist for all network connection devices (the IO operation device comprises a field, background monitoring device 20), the bridge 30 periodically sends a heartbeat packet and ask for a response message returned within a predetermined time. 当某个设备超时未应答,网桥30视为此设备发生异常,关闭与此设备的网络连接,删除此设备的记录,释放相应的资源。 When a device time-out does not answer, the device bridge 30 deemed abnormal, turn off the device connected to the network, and delete records for this device, release the corresponding resources.

在图3中,该网桥30包括以下几个模块: In Figure 3, the bridge 30 includes the following modules:

网络通信模块51,用于实现现场操作设备10、后台监控设备20之间的数据传输,接收后台监控设备20的网络连接请求,处理后台监控设备20的控制消息,同时接收后台监控设备20感兴趣的现场操作设备10的数据包,并根据后台监控设备20和现场操作设备10的连接关系进行相应的转发。 Network communication module 51 for enabling operation of field device 10, the background data transmission between the monitoring device 20, receives the background monitoring device 20 of network connection requests, message processing control background monitoring device 20, while the monitoring device 20 receives background interest the field device 10 is operational data packet, and forwards the connection relationship corresponding background monitor device 20 and operation of field device 10.

数据处理模块52,用于记录当前所有外围设备(现场操作设备IO、后台监控设备20)的基本信息,以交换矩阵的形式保存设备与设备之间的连接关系,以及对所接收到的数据包进行解析和处理,对需要转发的数据包进行再封装。 The data processing module 52, the basic information of all peripheral devices (the IO operation device field, background monitoring device 20) used for recording, storage devices and the connections between the switching device in the form of a matrix, and the received data packet parse and process, the need to forward a packet re-encapsulation.

硬件承载模块53,可以是一台配置了双网卡的计算机,也可以是包含了处理器、存储器和网络驱动设备的嵌入式设备,用于运行网络通信模块51、 数据处理模块52。 Hardware module carrier 53 may be configured with a double computer card, may be embedded device comprising a processor, a memory and a network drive apparatus for operating a network communication module 51, data processing module 52. 当网桥30启动后,完成初始化操作,启动网桥监听线程,侦听来自后台监控设备20的网络连接请求;通过网络通信模块51接收后台监控设备20的网络连接请求,然后通过数据处理模块52解析数据包,获知后台监控设备20 企图监控的现场操作设备10的名称。 When the bridge 30 is started, initialization operation is completed, the bridge starts listening thread, listens background monitoring device 20 requests the network connection; receiving background monitoring device 20 via the network connection requests network communication module 51, data processing module 52 then parsing the packet, the field is known to monitor the operation device 20 attempts the background monitor 10 of the device name.

数据处理模块52根据现场操作设备10的名称査询信息数据库,找到与需求相匹配的记录,以获取现场操作设备10的IP地址,根据该IP地址向此设备IO发送网络连接请求,以在交换矩阵上建立后台监控设备20与现场操作设备IO之间的连接关系。 The data processing module 52 queries the name field of the operation device information database 10, and needs to find the records that match, to obtain the IP address field 10 of the operation device, the network transmits a connection request to the device according to the IP address of IO to exchange establish the connection between the background monitoring device 20 and the IO devices on-site operation matrix.

数据处理模块52收到现场操作设备10的数据包,查询连接关系记录,并将数据包进行封装,由网络通信模块51将封装后的数据包转发给与此现场操作设备10存在连接关系的所有后台监控设备20。 The data processing module 52 receives the data packet operation of field device 10, the connection relationship record queries, and encapsulates the packet, the communication module 51 by the network the encapsulated packet forwarded to the connection relationship of this field device 10 that the operation of all background monitoring device 20.

如图4所示,为本发明采用的基本工作流程图。 4, a flowchart of the basic operation of the present invention is employed. 结合图2,当有后台监控设备20要停止对于某个现场操作设备10的监测时,网桥30拆除两者相互间的连接关系,查询信息记录,根据其他后台监控设备20的需求,判断是否仍然需要保持与此现场操作设备10的网络连接。 In conjunction with FIG. 2, when there is background monitoring device 20 to stop the monitoring operation device 10 for a certain field, the removal of bridge 30 is connected between the two mutual relationships, query information recorded in accordance with the needs of other background monitoring device 20 determines whether or not still we need to stay connected to this field network operation device 10.

对于所有与网桥30存在网络连接的现场操作设备10及后台监控设备20, 定期发送心跳数据包;并要求对方在规定时间内返回一个应答消息。 For all existing bridges 30 and network device 10 connected to the operating field and background monitoring device 20, periodically transmits heartbeat data packet; ask and returns a response message within a predetermined time. 当某个后台监控设备20超时未应答,网桥30视为该设备发生异常,关闭与该设备的网络连接,删除该设备的记录,释放相应的资源。 When a timeout background monitoring device 20 does not answer, the device bridge 30 deemed abnormal, turn off the device connected to the network, delete the record of the device, release the corresponding resources.

当网桥30启动以后,首先会执行一些基本的初始化操作;同时网桥30 并不会无差别的与所有现场操作设备IO进行网络连接,而只是打开针对后台监控设备20的网络端口,并在此端口侦听后台监控设备20的网络连接请求。 When the bridge 30 starts, will first perform some basic initialization; while 30 bridges and a network connection is not indifferent to all field operations equipment IO, but only for open network ports background monitoring device 20, and this network listens for background monitoring device 20 port connection request. 当收到一个后台监控设备20的网络连接请求时,网桥30会首先鉴别它是否为有权用户,如果是无权用户,则拒绝与它的网络连接。 When receiving a network connection request background monitoring devices 20, 30 bridges will first identify whether it is an authorized user, if the user is not entitled to, reject the connection to its network. 如果是有权用户,则接纳它的网络连接请求,并在自身的信息数据库中记录这个用户。 If an authorized user, the network connection request receiving it, and records the user information in its own database.

当网桥30建立了与后台监控设备20的网络连接以后,每当此用户要增加对于某个现场操作设备10的监测时,网桥30检索自身的记录,如果网桥30 之前己经和此现场操作设备10建立了网络连接,则将后台监控设备20与现场操作设备10在交换矩阵上建立连接关系后返回。 When the bridge 30 is established with the background monitoring device 20 after the network connection whenever the user to add a field respect to the monitoring operation device 10, the bridge 30 to retrieve its records, if the bridge has previously 30 and this on-site operation device 10 to establish a network connection, it will return to background monitoring device 20 and the field operation of the device 10 to establish a connection relationship in the switching matrix. 如果网桥30并未与此现场操作设备IO建立网络连接,则网桥30在自身的信息数据库中寻找此现场操作设备10的IP地址,根据检索到的IP地址,向相应的现场操作设备10发送网络 If the bridge 30 does not establish a network connection with this field operation the IO device, the bridge 30 in this field to find the IP address of the operation device 10 itself in the information database, the retrieved IP address field corresponding to the operation device 10 send network

连接请求,如果网络连接成功建立,则在交换矩阵中增加对于该设备的记录, Connection request, if the network connection is successfully established, is increased for the recording device in the switching matrix,

并将此现场操作设备10与后台监控设备20在交换矩阵中建立连接关系;如果网络连接失败,则向后台监控设备20返回失败消息。 This field and background monitoring operation device 10 and the device 20 to establish a connection relationship in switching matrix; if the network connection fails, back to the monitoring device 20 returns a failure message.

在图4中,该流程包括如下步骤: In FIG. 4, the process comprising the steps of:

步骤S401,启动网桥30,完成网桥30的初始化; Step S401, the start bridge 30, the bridge 30 of the completion of the initialization;

步骤S402,启动网桥监听线程,侦听来自后台监控设备20的网络连接请 Step S402, the bridge started listening thread, listen on the network from the background monitoring device 20 is connected to please

求; begging;

步骤S403,接收后台监控设备20的网络连接请求,通过解析数据包,获知后台监控设备20企图监控的现场操作设备10的名称; Step S403, the network monitoring device 20 receives back a connection request, by analyzing the data packet, the field known operating device 20 attempts to monitor background monitoring device name 10;

步骤S404,查询信息数据库,找到与需求相匹配的记录,获取现场操作设备10的IP地址,向此现场操作设备IO发送网络连接请求,并在交换矩阵上建立后台监控设备20与现场操作设备10之间的连接关系; Step S404, the query information database, find the record needs to match the acquired field operation device IP address 10, and transmits the network connection request to this field operation of the device the IO, and establish 20 and field operation device background monitoring device 10 in the switching matrix connection relationship between;

步骤S405,收到现场操作设备10的数据包,查询连接关系记录,将数据包封装以后,再转发给与此现场操作设备IO存在连接关系的所有后台监控设备20; Step S405, the received packet field operation device 10, the connection relationship record queries, after the packet is encapsulated, all background forwarded to the monitoring device 20 is connected to this relationship exists field operation the IO device;

步骤S406,结束。 Step S406, the end.

图4中,由于网桥30只与后台监控设备20感兴趣的现场操作设备10建立网络连接,从而避免了在传统的网桥设计中,无差别地接收处理数据报文, 而造成的在网络带宽和网桥30处理能力上的浪费。 In FIG. 4, since the bridge 30 and the background field operating device 20 monitoring device 10 of interest to establish a network connection, thereby avoiding the traditional bridge designs, indifferently receiving process data packets on the network caused by waste of bandwidth and processing power of 30 bridges. 在实际工程系统中,这种设计更为合理,大大提高了整个网络的信息传输效率。 In practical engineering systems, this design is more reasonable, greatly improving the efficiency of the entire network of information transmission.

如图5所示,为网桥对现场操作设备和后台监控设备的运行状况进行监控的工作流程图。 5, a flowchart of the bridge is on-site monitoring of operational status of equipment and operation of the background monitoring device.

在图5中,在通过网桥30来沟通现场操作设备10和后台监控设备20的工程系统中,作为网络传输的枢纽,网桥30的任务相当的繁重,因此它的网络带宽,CPU资源都非常的宝贵;节约网桥资源,避免不必要的浪费,是提高整个网络工作效能的重要环节。 In Figure 5, the operation of the device in the field to communicate through the bridge engineering systems 10 and 30 background monitoring device 20, as a hub for network transmission, the task of bridge 30 is quite heavy, so its network bandwidth, CPU resources very precious; save bridge resources and avoid unnecessary waste, it is an important part of the work to improve overall network performance. 针对一个己经不复存在的对象发送数据,或为一个已经死机或发生故障的设备保留信息记录都是对于带宽或处理机资源的浪费。 A transmission for the target data has ceased to exist, or have a crash or failure to retain the information recording apparatus or processor is the bandwidth waste of resources occurs. 而由于在实际工程系统中,经常会因为某些未知的原因导致设备出现诸如死机、复位、关闭或者通讯链路中断等异常状况。 And because in practical engineering systems, often because of some unknown reasons cause the device such as a crash, reset, or shut down the communication link is interrupted or other abnormal conditions. 通过网桥30对所连接的设备状态的监测,在周边设备发生异常时中断网络连接,回收资源可以有效提高整个网络的工作效能。 By monitoring the status of the device 30. For a bridge connection, network connection is interrupted when an abnormality occurs peripherals, resource recovery can effectively improve performance of the entire network.

在图5中,网桥30会定时查询自己的信息记录,对于所有存在网络连接关系的外围设备发送一个心跳数据包并置标志位,同时网桥30启动一个定时 In FIG. 5, the bridge 30 will periodically check their records information, it sends a heartbeat packet to all peripheral devices and a network connection relationship set flag, and a bridge 30 starts the timing

器,凡是接收到心跳数据包的设备都会返回一个应答消息。 Device, who received heartbeat packets device returns a response message. 当网桥30接收到 When the bridge 30 receives

来自某个设备应答消息,便清除该设备的标志位。 A reply message from the device, will clear the flag for the device. 当定时器超时以后,网桥 When the timer expires, the bridge

30检索信息数据库中所有的信息记录,对于标志位尚未被清除的对象,都视为发生了异常。 All information is recorded in the database 30 to retrieve information for the object flag has not been cleared, it is regarded as abnormal. 于是,网桥30便会在交换矩阵中删除此设备的记录,拆除之前保留的此设备和其他设备的连接关系。 As a result, the bridge 30 will delete records of this device in the switching matrix, a connection relationship between devices and other equipment are kept before being removed. 如果是现场操作设备10发生了异常, 网桥30还将发送相应的通知消息,告知还在监测此现场操作设备10的后台监测设备20。 If the site operation device 10 is an exception occurs, the bridge 30 also sends a corresponding notification message informing still monitoring this background monitoring device 20 field operation device 10.

结合图5,该流程具体包括如下步骤: In conjunction with FIG. 5, the flow includes the following steps:

步骤S501,网桥30发送心跳数据包,置标志位; Step S501, the bridge 30 transmits heartbeat data packet, the flag is set;

步骤S502,网桥30接收应答,清除标志位; Step S502, the bridge 30 receives a response, to clear the flag;

步骤S503,定时器超时,网桥30检查设备标志位; Step S503, the timer expires, the bridge device 30 checks flag;

步骤S504,网桥30逐一判断记录中所有设备的标志位是否被清除? Step S504, the bridge 30 one by one to determine whether the record all equipment flags are cleared? 对己被清除标志位的设备不作处理,对未被清除标志位的设备,则转入步骤S505; The device has to be cleared flag without treatment, the device of the flag is not cleared, the process proceeds to step S505;

步骤S505,网桥30关闭与未被清除标志位的设备之间的网络连接,删除记录5 Step S505, the network connection between the device 30 and the closing flag is not cleared bridge, delete records 5

步骤S506,网桥30完成全部检索。 Step S506, the bridge 30 to complete all the query.

以上对本发明的具体实现方法和它的功能特点作了详细说明,结合在工程系统中存在的实际情况,此发明对于先前的网桥设计做出了重大的改进,在工程领域和网络通信领域中具有非常广阔的应用前景。 Made to the above specific method of the invention and detailed description of its features, the actual presence of the engineering system, this invention is designed to bridge the previously made significant improvements in the engineering and the field of communications networks It has a very broad application prospects.

本发明结合了工业系统中的实际情况,提供了一种更为高效简便的智能网桥,从而保证了在工业系统中,现场操作设备和后台监控设备高效稳定的多对多通信;还提供了一种可以让工作在不同网段中网元相互之间完成信息交互的简便方法,该方法通过一种类似交互矩阵的传输机制,支持现场操作设备和后台监控设备相互之间多对多的通信,作为沟通现场操作设备和后台监控设备的传输枢纽,保证了相互之间稳定高效、便捷的信息传输。 The present invention combines the actual conditions in the industrial system, a simpler more efficient intelligent bridge, thus ensuring the industrial system, field device operation monitoring device and a highly efficient and stable back-many communication; also provides a technology that allows to work in different network segment yuan easy way to complete the information exchange between each other, the transmission method by a similar mechanism of interaction matrix, mutual support between field devices and back-office operations-many communications monitoring equipment as a hub of communication transmission equipment and field operations background monitoring equipment to ensure stable and efficient, easy transfer of information between each other.

另外,本发明并不是无差别的接收处理现场操作设备的所有报文,而只是接收处理后台监控设备感兴趣的现场操作设备的报文。 Further, the present invention is not intended operation of the reception processing apparatus undifferentiated field of all packets, but only packet reception processing apparatus interest field background monitor operation of the device. 在保证了后台监控设备监测需求的同时,节省了网络带宽,降低了网桥的工作负荷。 In the background monitoring to ensure that the needs of monitoring devices at the same time, saving network bandwidth and reduces the work load of the bridge.

对于后台监控设备和现场操作设备的运行状况进行监测,当某台设备出现异常时,网桥自行中断与它的网络连接并释放相关的资源。 For the background to monitor the health monitoring equipment and field operation of the device, a device when an exception occurs, the bridge itself breaks the connection to its network and releases associated resources. 且对于来自后台监控层,对可能相互冲突的控制消息进行处理,提高了网络整体上的工作效能。 And for monitoring layer from the background, the control of potentially conflicting messages are processed, improving the effectiveness of the work on the overall network.

当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 Of course, the present invention may have many other embodiments without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and variations according to the present invention, these corresponding modifications and variations shall fall within the scope of the appended claims.

Claims (10)

1、一种用于不同网段间网元通信的智能网桥,用于包括现场操作设备和后台监控设备的工程系统,所述现场操作设备、所述后台监控设备各自运行于不同的网段,其特征在于,该智能网桥包括: 网络通信模块,用于实现所述现场操作设备、所述后台监控设备之间的数据传输; 数据处理模块,连接所述网络通信模块,用于处理所述后台监控设备发送的网络连接请求,根据所述网络连接请求获取所述后台监控设备需要监控的现场操作设备,建立所述现场操作设备、所述后台监控设备之间的连接关系,接收所述现场操作设备发送的数据包,对所述数据包进行封装,并将封装后的数据包转发给与所述现场操作设备存在连接关系的后台监控设备。 1. A method for intelligent network bridge communication between different network element, and the operation device comprises a field for background monitoring equipment engineering system, the operating device field, the background monitoring devices each running on different network segments wherein the intelligent network bridge comprising: a network communication module for enabling operation of the field device, the data transmission between the background monitoring apparatus; data processing module, connected to the network communication module, for processing network connection request transmitting said background monitoring device, according to the network connection request acquires the background field operating device monitoring device need to be monitored, the field operation device establishing the connection relation between the background monitoring device, receiving the data packets sent by the operation field, the encapsulated data packet, and forwarding the encapsulated data packet field operation device connected to the presence of the background gives the relationship between the monitoring device.
2、 根据权利要求1所述的用于不同网段间网元通信的智能网桥,其特征在于,还包括:硬件承载模块,用于运行所述网络通信模块、所述数据处理模块。 2, according to claim intelligent network bridge between different communications network element according to claim 1, characterized by further comprising: a carrying module hardware, for operating the network communication module, the data processing module.
3、 根据权利要求2所述的用于不同网段间网元通信的智能网桥,其特征在于,所述硬件承载模块为配置有双网卡的计算机或包含有处理器、存储器和网络驱动设备的嵌入式设备。 3, according to claim smart bridge communication between different segments of the network element 2, wherein said hardware carrier configured with a computer module or a dual-card comprises a processor, memory, and network device drivers embedded devices.
4、 根据权利要求l、 2或3所述的用于不同网段间网元通信的智能网桥, 其特征在于,所述数据处理模块以交换矩阵形式记录/保存所述现场操作设备与所述后台监控设备之间的连接关系。 4, according to claim L, for intelligent bridges between different network elements in communication network 2 or claim 3, wherein the data processing module in a switching matrix in the form of a recording / storage devices and the operation of the field said connection relationship between the background monitoring device.
5、 一种应用智能网桥实现数据传输的方法,用于包括现场操作设备和后台监控设备的工程系统,所述现场操作设备、所述后台监控设备各自运行于不同的网段,其特征在于,该方法包括:步骤一,智能网桥接收由所述后台监控设备发送的网络连接请求,根据所述网络连接请求获取所述后台监控设备需要监控的现场操作设备,并建立所述现场操作设备与所述后台监控设备之间的连接关系;步骤二,所述智能网桥接收由所述现场操作设备发送的数据包,对所述数据包进行封装,并将封装后的数据包转发给与所述现场操作设备存在连接关系的后台监控设备。 5. A method of data transmission bridge application intelligence for operating devices including field and background monitoring equipment engineering system, the operating device field, the background monitoring devices each running on different network segments, wherein , the method comprising: a step, by the intelligent network bridge receives a connection request sent by the background monitor requests according to the network connection apparatus acquiring the background field operation monitoring device need to be monitored, and the establishment of the field operating device the connection between the monitoring device and the background; step two, the smart bridge receiver, the data packet encapsulated by the operation of the field device data packet transmitted, and forwards the encapsulated packet to give the presence of field device operation monitoring device is connected back relationship.
6、 根据权利要求5所述的实现数据传输的方法,其特征在于,所述歩骤一之前,进一步包括:启动所述智能网桥,完成所述智能网桥的初始化,并在针对所述后台监控设备的网络端口处侦听来自所述后台监控设备的网络连接请求的步骤。 6, the data transmission method as claimed in claim 5, characterized in that a step prior to the ho, further comprising: activating the intelligent network bridge to complete the initialization of the smart bridge, and for the background monitoring apparatus at the network port listener network connection request from the step of the background monitoring device.
7、 根据权利要求6所述的实现数据传输的方法,其特征在于,所述歩骤一中,进一步包括:所述智能网桥在接收到所述网络连接请求时,对所述后台监控设备进行鉴权,判断所述后台监控设备是否为有权用户的步骤,若有,则接纳所述网络连接请求;否则拒绝所述网络连接请求。 7, the data transmission method as claimed in claim 6, characterized in that a step in the ho, further comprising: said intelligent bridge network upon receiving the connection request, the background monitoring device authenticating, background monitoring apparatus determines whether the user's right to step, if so, to receive the network connection request; otherwise, reject the connection request to the network.
8、 根据权利要求5、 6或7所述的实现数据传输的方法,其特征在于,所述步骤一中,进一步包括:当所述智能网桥接收到所述后台监控设备需要增加对指定现场操作设备的监测时,根据网桥内存中是否存在该指定现场操作设备的记录进行相应的处理:若存在,则建立所述后台监控设备与该指定现场操作设备之间的连接关系;否则向该指定现场操作设备发送网络连接请求,并在所述网桥内存中增加对该指定现场操作设备的信息记录,再在所述网桥内存中建立所述后台监控设备与该指定现场操作设备之间的连接关系。 8. The data transmission method of 5, 6 or claim 7, wherein, in said step a, further comprising: when the smart bridge receiving the background monitoring device is necessary to increase the specified site when monitoring the operation of the device, the recording operation of the specified field device according to whether there is the memory bridge corresponding processing: if present, to establish the connection between the monitoring device and the designated background field operation device; otherwise, to the field specifies the operation device transmits the connection request to the network, and increase the information recording device the operation of the specified field in the bridge memory, and then establishing the background monitoring device and the operating device designated field in the bridge between the memory the connection relationship.
9、 根据权利要求5、 6或7所述的实现数据传输的方法,其特征在于,所述步骤一中,进一步包括:当所述智能网桥接收到所述后台监控设备需要关闭指定现场操作设备的监测时,拆除网桥内存中所述后台监控设备与该指定现场操作设备之间的连接关系,并检索是否还有其他后台监控设备对该指定现场操作设备需要监控:若有,则保持与该指定现场操作设备之间的网络连接,维持相应的信息记录;否则关闭与该指定现场操作设备之间的网络连接,删除相应的信息记录。 9, the data transmission method according to 5, 6 or claim 7, wherein, in said step a, further comprising: when receiving the smart bridge monitoring device needs to close the background field operations specified when the monitoring equipment, the removal of the connection between the monitoring device and the background field specifies the memory bridge operation device, and retrieve background monitor whether there are other operating devices of the specified field device needs to be monitored: if so, retaining and a network connection between the designated field operating device, to maintain information corresponding record; otherwise, closes the connection between the network and the operation field specifies the device, deletes the corresponding record information.
10、 根据权利要求5、 6或7所述的实现数据传输的方法,其特征在于, 所述步骤二中,进一步包括:所述智能网桥对所述现场操作设备和/或所述后台监控设备的运行状况进行监控,当所述现场操作设备和/或所述后台监控设备出现异常状况时,断开与相应设备的网络连接并释放相关资源的步骤。 10. The data transmission method of 5, 6 or claim 7, wherein said step two, further comprising: the intelligent network bridge operating the field device and / or monitoring the background monitor operating conditions of the device, when the operation of field device and / or the background abnormal condition monitoring device, the device disconnected from the network and corresponding to the step of releasing related resources.
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