CN102111796A - Distributed interactive method for large-scale wireless sensor network - Google Patents
Distributed interactive method for large-scale wireless sensor network Download PDFInfo
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Abstract
The invention discloses a distributed interactive method for a large-scale wireless sensor network. In the invention, a highly-expandable distributed network structure mode is adopted, thus a custom interface at which a user is allowed to access and control a network node is provided for a large-scale disorderly distributed wireless sensor network; and data monitoring and control of one or multiple nodes are supported at the same time, and the nodes in the sensor network are not required to be distributed according to a specific topological structure. Access nodes are automatically identified by using a node identification mode, and a proper interactive algorithm is selected for the access nodes; through the interface, the user can directly observe the real-time inner data and communication information of the nodes, and the real-time inner data and communication information comprise inner voltage information of the nodes, the value of a data structure in a node use program and the data and condition of communication between the nodes; and the inner data of the nodes are changed when the nodes are in operation, or specific commands are implemented by the nodes.
Description
Technical field
The present invention relates to a kind of debugging and method of testing of wireless sensor network, especially refer to the debugging and the test of the wireless sensor network of large scale deployment.The invention belongs to wireless sensor network, wireless communication field.
Background technology
Wireless sensor network is exactly by the ad hoc network system that is deployed in the multi-hop that microsensor nodes a large amount of in the monitored area forms by radio communication, its objective is the information of detected object in perception collaboratively, collection and the processing network's coverage area, and send to the observer.At present, sensor network reaches one of Internet of Things key technology as the research focus of current information sciemtifec and technical sphere, has become the key factor of various countries' overall national strength trial of strength.
Because wireless sensor network has the applications well prospect in fields such as physical world information gathering, environment measuring and location, R and D at it are also more and more hotter, for example various routes at transducer, the location, and collaborative Calculation Method emerges in an endless stream.Yet, to compare with traditional network system, the single-sensor node processing of sensor network is limited in one's ability, and the unmanned plane interface, and the number of nodes that network comprised is huge, and applied environment is complicated and changeable.Wireless sensor network above-mentioned is characterized as wireless sensor network relevant application testing and debugging and is provided with obstacle, meanwhile, also increased test of wireless sensor network related application and the importance of debugging.
Current, the researcher of wireless sensor network generally adopts the method for software simulation and small-scale node test to understand intra-node ruuning situation.Yet, because wireless sensor network adopts radio communication, there is the wireless channel conflict, disturb, connect problems such as shakiness, and the node own resources are limited, routine processes need be considered resource limit.These problems are not that software simulation can solve.For the small-scale node test, if only arrange a jumping scope, then the node layout is limited, can not really embody the truth of application; If arrange multi-hop, then the researcher is difficult to know that one jumps the ruuning situation with exterior node.
As the interaction technique of wireless sensor network test, because the difference of wireless sensor network and legacy network has self unique design requirement with one of debugging key technology.Especially how the node in the large scale deployment wireless sensor network is carried out alternately effectively easily, and understand the state of its current operation,, become problem demanding prompt solution to guarantee its true(-)running in real work.
Find by retrieval, can realize at present mainly containing with the method for the mutual control of radio sensing network.
MoteLab system of Harvard University.The MoteLab system supports that the multi-user is undertaken by browser and sensor network alternately.The user creates and modification test assignment and installation testing schedule in web page information of registered users.System moves wireless sensor network program in the test schedule of user's appointment, and writes down the Serial Port Information that wireless sensor network sends over, with the form confession user inquiring of data list.But, because the MoteLab system can't show the information of sensor network in real time, can not carry out real-time, interactive with wireless sensor network, therefore lack ageing; This system is not suitable for the sensor network of large scale deployment simultaneously, has limited its range of application.The exchange method of this system thereby have certain limitation.
Application number is 200610144351.5, and the applying date is that the domestic patent of invention on December 04th, 2006 discloses a kind of realization wireless sensor network visualization method.This method is collected the communication information in the wireless sensor network by serial ports, and shows with ActiveX control.This method design is comparatively simple, though can help the researcher to understand wireless sensor network ruuning situation on a small scale to a certain extent, but because shortage is to the mutual control ability of wireless sensor network, and the data Presentation Function is comparatively simple, only can provide simple test and debug function, can do nothing to help researcher's judgment data type and error message etc., especially be not suitable for the mutual of massive wireless sensor.
Wireless sensor network interactive tool or the method that exists can only carry out not being suitable for large-scale wireless sensor network equally alternately as (JTAG simulator) to the single-sensor node at present.
Summary of the invention
Technical problem to be solved by this invention be how in the wireless sensor network of large scale deployment, to realize effectively mutual in real time between the node of different brands different size different operating system.
The present invention intends solving the problems of the technologies described above by the following technical programs.The present invention designs and Implements a kind of distributed interactive method towards massive wireless sensor, by distributed network configuration, can effectively be implemented in and carry out in the massive wireless sensor alternately, can realize simultaneously to one or more node input data or control command in the wireless sensor network, and receive one or more node datas in this network, for the design deployment and the test and debugging of wireless sensor network are offered help.
The present invention adopts distributed network structure, realizes the extensive expansion of wireless sensor network.Because operating system commonly used has limited the upper limit of direct connected node quantity, therefore the present invention adopts miniPC to carry out the distributed network deployment, directly connect sensor node by miniPC, collect the communication information and the state information of connected great deal of nodes, be transmitted to upper level server end receiving processing module through after the preliminary treatment.MiniPC is one and the direct-connected gateway of a plurality of sensor nodes, collect the communication information and the state information of connected great deal of nodes, be transmitted to upper level server end receiving processing module through after the preliminary treatment, along with the continuous increase of number of nodes, can expand on a large scale network by the mode that increases more miniPC.Every miniPC can be connected in an identical manner to the receiving processing module of central server.Because the program between each miniPC is not all disturbed mutually, and communicates by letter with central server based on TCP/IP.The increase of miniPC or minimizing do not influence the normal realization of interactive function.
Be to ensure the accuracy of communication data, be reduced to the influence that realizes interactive function and the real work network is caused, suggestion uses serial ports to realize the mutual function of wireless sensor network as communication port between sensor network nodes and the miniPC.
The situation that the shortage of sensor node unified standard has caused current sensor node hardware configuration to have nothing in common with each other.As everyone knows, for having of different nodes different interactive processing mode and Serial Port Information collection method.For example the Mica node of Crossbow company has two serial ports ports, and the information that is respectively applied for sends and program updates; And the TelosB node has only a serial ports port, and the information gathering of serial ports and program updates all are to operate by this port.In massive wireless sensor, a large amount of different editions appear, and the probability of different operating system node is very high.The present invention has the node detection function, in the moment that node is connected with miniPC, the miniPC autotest starts, detecting this access node belongs to any type and moves what operating system, and select corresponding interactive algorithm for it, thereby the adaptation function of the system of realization makes to have better applicability alternately.
After node inserts miniPC, can realize node is carried out information gathering and control and management.Before compiler, the user only need specify mutual module, as ADC, and UART, compiler will combine and be compiled into executable file with the program of interactive module with application program.The node that loads this executable file can carry out with miniPC alternately.The researcher can take all factors into consideration the mutual facility and the efficient of joint behavior, selects needed module.
Interactive mode between node and miniPC or similar devices was based on RPC(Remote Procedure Call Protocol in the past) agreement.Though RPC can cross-platformly move, this PRC consultation based on IDL that is suitable in legacy network brings very big energy burden for the node of finite energy.Therefore this patent directly utilizes the initial data of serial ports to resolve, and reduces the node energy burden, prolongs node electric energy shelf life.
After miniPC collects a large amount of wireless sensor network service datas, server end can be at the characteristics of massive wireless sensor, carry out mass data processing, for example show that the detailed node communication topological structure of massive wireless sensor, the interaction data that meets extensive feature show.
No matter the network service topological structure in conventional wireless network, all is the network operations information that research staff or user pay close attention in the still emerging wireless sensor network.The node communication topological structure is to observe wireless sensor network to connect one of direct-vision method of situation.
By the communication data that node sends out through serial ports, can know these data are by which node to be sent, which its destination node is, these data be send or receive and data ID number.This patent adopts two modes that trigger to draw the topological structure of node communication, promptly is divided into the sending node triggering and triggers with receiving node.When sending node with communication data after serial ports is sent, interaction platform is triggered at once and notes ID number of this data, and draws out a topological diagram with directivity according to the sending node ID and the destination node ID of communication data.After these data were received by other node, interaction platform was triggered once more, and according to the ID of notebook data, the node communication topology line of having drawn was before placed highlighted, showed that these data are received.Thereby demonstrate the communication topology structure chart that has directivity and can learn the information transmit-receive result.
Because the number of nodes that comprises in the large-scale sensor network is huge, therefore the feedack amount is also very huge from network, need present by sifting sort.Data qualification shows can be user-friendly for data screening.When data showed, except intactly demonstrating the data of node communication, the present invention can also show the signal strength signal intensity when communication of these data, error message information such as (as channel busy, can't send).By data ID that sends and the data ID that receives, the present invention can also detect the receive status of these data.
For convenience of the comparative control mass data, the present invention adopts user-friendly windows display mode, is convenient to the user and carries out the data observation according to general custom.
The distributed interactive method towards massive wireless sensor by technique scheme realizes can realize following beneficial effect.
(1) this exchange method has powerful extended capability, adopts distributed frame to break through the restriction of operating system to the number of nodes upper limit.
(2) this exchange method has general compatibility, is applicable to the mutual of the massive wireless sensor that adopts dissimilar different operating systems.
(3) this exchange method has adaptive ability, is not needing the researcher to remodify under the situation of application program, realize PC with internodal alternately, can solve the problem that is provided with that great deal of nodes on a large scale inserts simultaneously.
(4) mass data of this exchange method in can the acquisition process massive wireless sensor, for example the form with communication topology figure detailed, that comprise bulk information presents.
This exchange method is considered the characteristics of massive wireless sensor, proposes the diversified data of sort-type and shows and comparative approach, can make things convenient for the user to handle the magnanimity communication data.
Description of drawings
Fig. 1, overall hardware structure figure.
Fig. 2, interaction diagrams.
Fig. 3, user's key-course schematic diagram.
Fig. 4, interactive module schematic diagram.
Fig. 5, user's control flow chart.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, the hardware and software platform of realizing exchange method of the present invention should comprise nodal terminal network layer (Mote Mesh), data analysis layer (Data Processed), user's key-course (User Control) three big essential parts.
Nodal terminal network layer (Mote Mesh) is made up of the wireless sensor network node of large scale deployment and miniPC.Sensor network is a peer-to-peer network, and the node in the net is to dispose by distributed, and each node is communicated by letter by the multi-hop algorithm each other.Node can add or deviated from network at any time, and the fault of any node can not influence the operation of interactive system.The program of node operation comprises user application and node interactive module program, node interactive module program is to be used to obtain information such as intra-node variable and communication data, and provide the program of internal processes calling interface, it has transplantability preferably, may operate on the node and operating system of different brands.
MiniPC can regard a gateway as, and it links to each other with sensor node with hub-and-spoke configuration by connected modes such as USB or 51Pins on one side, by Ethernet or WLAN (wireless local area network) connect data analysis layer on one side.MiniPC can obtain information such as intra-node variable and communication data by the node interface module, and this information is arrived data analysis layer by Network Transmission, and confession user key-course is checked and called.
Data analysis layer (Data Processed) comprises database server, interactive program server and real-time communication server three parts.Real-time communication server is connected by Ethernet or WLAN (wireless local area network) with miniPC, adopts TCP/IP to communicate.Because number of nodes is bigger, it is tens of million that the data volume that the sensor network per minute produces often surpasses, and even up to a hundred million.Be to improve the real-time of interactive system, reduce system response time, pursue better user experience, real-time communication server can be formed a NLB (NLB) by multiple servers and troops, and real-time sense is from the port data of miniPC.After real-time communication server is received nodal information,, can directly be transmitted to interactive program server or database server to data according to the instruction of interactive program server.Database server mainly is responsible for nodal information is stored in the data-base cluster, so that the researcher does data mining, and data processing such as data warehouse.In addition, database server can also specify planning that data are screened according to the user, merges and intellectual analysis, as analyze the node multi-hop track in the sensor network according to the source node in the node communication data and destination node.Unique interface that the interactive program server is communicated by letter with user's key-course as data Layer, one side needs checking user's operating right validity, needs on the other hand interested real time data or historical data are sent to the long-distance user by TCP/IP.
User's key-course (User Control) has human-computer interaction function, can be divided into service layer and display layer in logic.Service layer is responsible for and the interactive program server communication, and real-time or historical data are collected, and analyzes, handle, and the control command sent of response display layer, simultaneously by command mode control sampling module realize gathering, stop, function such as uploading nodes program.Display layer display data analysis result can realize that node access path figure draws, display network running status figure, and historical data is checked, node dynamic-configuration, and operations such as transmitting control commands and uploading nodes program.Output file is provided, makes things convenient for the user to carry out off-line debugging and analysis.
Below in conjunction with Fig. 2, it is as follows towards the idiographic flow that the distributed interactive method of massive wireless sensor is adopted to be illustrated as realization.
The upper strata that step 207, node communication program can be regarded node interface as drives, and interactive program can send information in the node by the node communication program by pipe method action node communication program, also can accept the information from node.The node communication program is independent of the communication protocol of node interactive program, and it only provides simple communications access media, can use language realization arbitrarily.The signal procedure that adds node only needs compiled this program, and the form that this program point and title can be discerned according to step 206 is registered in the node communication program XML file.
User's key-course is based on the front-end control software that .NET Frameworks is developed, and friendly human-computer interaction interface is provided, and adopts the server/customer end pattern simultaneously, makes platform constitute a distributed system, makes things convenient for the researcher to test use.As shown in Figure 3, user's key-course mainly is divided into two major parts: to the real-time collection and the demonstration of control, sensor communication and the internal data of sensor network nodes.It provides.
1) sensor node that is connected into interactive system is discerned automatically, node is managed the running status of monitor node with the form of tree list.
2) show the environment of sensor experiment in the mode of 2 d plane picture, adjust the node particular location, can adjust the demonstration size of node simultaneously by coordinate.
3) provide the multi-user to insert, the user of system is carried out rights management and authentication.Abundant condition prompting information, dynamically mail reminder makes the researcher understand intuitively the running status of system and grasp in time.
4) Feng Fu transducer interaction data is gathered in real time and is shown, can carry out the real-time collection of interaction data to certain or a plurality of sensor node, and the hexadecimal data that the user is hard to understand is directly perceived must show, can explain the time as data from the communication interaction module, packet sequence, source ID, purpose ID, whether type of data packet sends user data of success and institute's load or the like.
5) form with tabulation shows the packet of node, and distinguishes the type of packet with different colours.If communication data by the analysis to packet, is drawn out the communication path of data between sensor node, with the communication topology structure of Real Time Observation sensor network.
As shown in Figure 4, the node interactive module is based on the network interface program of operating system, is mainly used in miniPC to carry out alternately.The user uses when of the present invention, as long as application program is connected compiling with the operating system with interface module, but just can generate the executive program with interactive function, and need not revise self program.
As shown in Figure 5, the node interactive module comprises data-interface and command interface.Node is also transmitted with specific format data after sending data toward peripheral interface toward miniPC, miniPC just can obtain the node communication data by intercepting interface.Command interface is used for acquisition module and node carries out alternately, as node wireless transmission energy is set, obtains nodal information etc.The node interface modular design only takies a small amount of cpu cycle execution command, does not influence the main program operation.
Claims (10)
1. distributed interactive method towards massive wireless sensor, it is characterized in that: this method adopts the mode of highly scalable distributed network configuration, can be simultaneously, wireless sensor network extensive, irregular deployment allows the self defined interface of user capture and Control Network node for providing, by this interface, the user can the Direct observation node real-time embedded data, the communication information, also can when node moves, change interior data, or make its carry out specific order.
2. the distributed interactive method towards massive wireless sensor according to claim 1 is characterized in that: adopt the miniPC gateway to carry out distributed network and dispose, realize highly extendible distributed network structure.
3. the distributed interactive method towards massive wireless sensor according to claim 2, it is characterized in that: miniPC is one and the direct-connected gateway of a plurality of sensor nodes, collect the communication information and the state information of connected great deal of nodes, be transmitted to upper level server end receiving processing module through after the preliminary treatment, along with the continuous increase of number of nodes, can expand on a large scale network by the mode that increases more miniPC.
4. the distributed interactive method towards massive wireless sensor according to claim 1, it is characterized in that: can be simultaneously allow the self defined interface of user capture and Control Network node for wireless sensor network extensive, irregular deployment provides, the described finger simultaneously in synchronization, support data monitoring and control to one or more nodes; Described irregular deployment refers to that this method does not require that the node in the sensor network disposes by special topological structure.
5. the distributed interactive method towards massive wireless sensor according to claim 4, it is characterized in that: described node does not limit specific node, promptly at existing node, multiple soft, hardware interface is provided, and adopted the node recognition methods, detect this access node and belong to what type and move what operating system,, thereby do not limit required mutual node types for dissimilar nodes are selected the node interactive algorithm that mates automatically.
6. the distributed interactive method towards massive wireless sensor according to claim 5, it is characterized in that: described interactive algorithm is without the PRC agreement, and directly adopting original hexadecimal data to communicate, interactive algorithm does not need user program to make any change; Described interactive algorithm does not influence the actuating logic of user program substantially.
7. the distributed interactive method towards massive wireless sensor according to claim 1, it is characterized in that: described interactive interface is not changeless, it allows the user to select specific interactive interface according to application scenario, the user only need be before the compiling user code, specify required mutual module, just can compile out user program with interactive interface.
8. the distributed interactive method towards massive wireless sensor according to claim 1, it is characterized in that internal data, the communication information that described user can the Direct observation node comprise: the data and the situation that show value, node and the node communication of data structure in the builtin voltage information, node users program of node.
9. the distributed interactive method towards massive wireless sensor according to claim 8, it is characterized in that, the data and the situation of described demonstration node and node communication, it is the communication data that sends out through serial ports by parse node, obtaining these data is by which node to be sent, which its destination node is, these data be send or receive and information such as data ID number after, complete demonstration node communication data, and comprise and be not limited to, parse each layer data in the node communication protocol stack, the signal strength signal intensity when communication of data, error message.
10. the distributed interactive method towards massive wireless sensor according to claim 1, it is characterized in that, when moving, described node changes interior data, and make its carry out the method for specific order, be to finish by the interactive program that moves in the node, this interactive program is based on that Event triggered starts, and is not having under the control operation situation, except the code space that takies the node fraction, do not take the clock cycle of modal processor.
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| CN104123388A (en) * | 2014-08-07 | 2014-10-29 | 武汉大学 | Massive-sensing-network-data-oriented high-concurrency real-time access system and method |
| CN104253871A (en) * | 2014-10-15 | 2014-12-31 | 复旦大学无锡研究院 | Remote management system on basis of IOT (Internet of Things) intelligent node |
| CN107409246B (en) * | 2015-01-19 | 2021-01-15 | 水利管理有限责任公司 | Scalable system and method for monitoring kitchen and toilet facilities using distributed connection devices |
| CN107409246A (en) * | 2015-01-19 | 2017-11-28 | 水利管理有限责任公司 | Use the expansible system and method for distributed connection monitoring of tools kitchen and bath facilities |
| CN104698861A (en) * | 2015-02-10 | 2015-06-10 | 上海创景计算机系统有限公司 | Simulation software interaction control system |
| CN104698861B (en) * | 2015-02-10 | 2017-10-24 | 上海创景计算机系统有限公司 | simulation software interaction control system |
| WO2018064843A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳中兴力维技术有限公司 | System and method for managing infrastructure of data center |
| CN107222520A (en) * | 2017-04-25 | 2017-09-29 | 天津大学 | Distributed system middleware based on Directed Diffusion Algorithm |
| CN107222520B (en) * | 2017-04-25 | 2020-09-11 | 天津大学 | Distributed system based on directional diffusion algorithm |
| CN109302724A (en) * | 2017-12-20 | 2019-02-01 | 上海创远仪器技术股份有限公司 | A kind of distribution multinode radio real-time data processing system and method |
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Application publication date: 20110629 |