CN101977398A - Wireless environment analog system for test bed of sensor network and method thereof - Google Patents
Wireless environment analog system for test bed of sensor network and method thereof Download PDFInfo
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Abstract
The invention provides a wireless environment analog system for a test bed of a sensor network and a measuring method. The system comprises a measured network, a wireless environment analog platform and a monitoring platform, wherein the measured network comprises various nodes which are isomeric mutually; the wireless environment analog platform defines a radio device by adopting software; and the monitoring platform controls each configuration parameter and running and halt. Through the system, various experiments and studies of the sensor network of wireless environment can be performed under laboratory environment; and the high flexibility of the radio equipment is defined by utilizing the software, so that the configuration parameters of the wireless environment analog platform can be modified in real time while the system runs, and the background noise of scenes can be transformed.
Description
Technical field
The present invention relates to sensor network, more specifically, the present invention relates to sensor network test bed wireless environment analogue system and its implementation.
Background technology
The functional test of wireless sensor network and performance measurement instrument are the important foundations of sensor network scientific research process and application system building process.Relevant scientific achievement need carry out reliability and the high correctness of confidence level detects and Performance Evaluation; Simultaneously, the application system that maturity is high more needs to carry out really degree height, big pressure, eventful repeatability can be assessed and test.Along with going deep into of sensor network scientific research and application and development, wireless sensor network assessment evaluating system stable, reliable, credible and that extensibility is high demonstrates the urgency of its importance and demand all the more.In the scientific research and application and development work of sensor network, the Performance Evaluation evaluating system has become the technical bottleneck that obstruction is further deeply worked, and therefore, the functional test and the performance measurement instrument of preparation wireless sensor network need go deep into launching effectively.Because the transmitting power of wireless sensor network is little, the circumstance complication of system deployment, so wireless environment analogue system and realization thereof in the wireless sensor network research are even more important.
MoteLab is a kind of wireless sensor network test platform of Harvard University's exploitation, support comprises the multiple user capture mode of Web mode, the user can carry out remote operation to the network of test platform by Internet, thereby carry out network test, described in http://motelab.eecs.harvard.edu/index.php.The system configuration of MoteLab is made up of two parts: sensor node network and central server.Each sensor node in the network is Mica2 or MicaZ node, use the IEEE802.15.4 agreement to communicate, these nodes are connected again on the MIB-600 development board and link to each other with central server by serial ports simultaneously, and connection Ethernet, make the data of node to transmit like this, thereby network state is tested by radio communication device and serial ports and Ethernet multiple channel.The user also can send on the node by Ethernet the control command of network in addition, makes under the situation that does not influence network application node to be implemented real-time control adjustment.The access mode of this support of the MoteLab Web page has realized that open platform resource is shared, and the multiple visit that is provided is by way of making the user more conveniently to finish test assignment neatly and network being monitored.And the developer of MoteLab thinks that the mode of this web access will become the trend of wireless sensor network platform building technology.But MoteLab considers less for the method for testing evaluation, also just survey the voltage method realization at present as test by on a node, connecting universal instrument to energy, the low availability of precision is not high, and the network size that MoteLab supported is less in addition, and autgmentability is not strong.And MoteLab does not consider the problem of wireless environment.
The Kansei platform of Ohio State University's exploitation is the test platform at wireless sensor network towards multiple application, described in " a high-fidelity sensing testbed.IEEE Internet Computing; 2006,10 (2): 35-47 ".The Kansei platform has taken into full account in design to the support of large-scale application environment and to the generalization of various application backgrounds and the requirement of autgmentability, for building of wireless sensor network test platform provides suggestive thinking.Divide from structure, the Kansei platform is made up of static network, portable network and mobile network's three parts.The rectangle rule array that static network is made up of 210 nodes, each node are divided into XSM node and Stargate single board computer two parts.The XSM node uses 916MHz microwave communication (version of renewal has used the IEEE802.15.4 protocol communication), is the object of network test and control.Stargate has the agreement communication that system independently uses IEEE802.11b, links to each other with Ethernet also to conduct interviews to XSM and control by connector, and the mobile network is made up of 5 machine carriages.Travel on the glass plate that static network node lays above.Mobile network node can be used to collect feedback signal and inject data when static network implementation, thereby cooperates static network to finish test.Number of nodes is indefinite in the portable network, except the management of carrying out storage, compression, transmission and time synchronized, also selects the different transducer of collocation according to the demand of different tests, is used for carrying out at the applied environment of reality the induction and the collection of data.Three kinds of network configurations of Kansei platform provide the thinking of feasibility for the test platform of building true reflection large-scale application environment.At first, utilize deployment, the portable easily network of recovery can under the environmental condition of reality, carry out data acquisition, thereby the spatial character and the application characteristic that have reflected data more truly, and portable Network Design has also improved the Kansei flat surface to multiple Application Expansion and flexibility.Secondly, by the hybrid analog-digital simulation method that actual node combines with theoretical modeling, solved the big inadequately problem of test platform network node scale effectively.At last, mobile network's design makes that the Kansei platform can be to mobile wireless sensor network application carrying out testing evaluation, and network configuration is flexibly abundant more.But the Kansei platform also is in the development process at present.Do not realize fully that as functions such as system's access control the effect of hybrid analog-digital simulation method also remains further to be verified.The portable network of Kansei platform can disposed on-the-spot testing research work easily, but need finish at the deployment scene of reality, under laboratory environment, do not consider the problem of modelling of wireless environment, be not easy to carry out research with a high credibility and experiment work in the laboratory.
Summary of the invention
In order to address the above problem, the invention provides sensor network test bed wireless environment analogue system and its implementation, be used to be implemented in the corresponding on-site wireless environment of simulation under the laboratory environment.
According to an aspect of the present invention, a kind of sensor network test bed wireless environment analogue system has been proposed, comprise tested network, wireless environment analog platform and monitor supervision platform, described tested network comprises the node of multiple mutual isomery, the wireless environment analog platform adopts the software-defined radio device, and monitor supervision platform is controlled each configuration parameter and operation and stopped;
Wherein, the user is provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme; Described monitor supervision platform is used for downloading corresponding node procedure by monitoring information channel to node according to the ID of node, be used to store the test data that receives, when the test bed system end of run time arrives, notify node stop operation node procedure in the tested network by monitoring information channel; Described node is used for the time started operation node procedure according to operation, and the collecting test data that are in operation are transferred to monitor supervision platform with the test data of gathering by monitoring information channel.
According to a further aspect in the invention, proposed the method for testing of a kind of sensor network test bed system, described sensor network test bed system comprises tested network and monitor supervision platform, and described tested network comprises the node of multiple mutual isomery, and this method comprises:
Step 10), user are provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme;
Step 20), monitor supervision platform is downloaded corresponding node procedure according to the ID of node by monitoring information channel in node;
Step 30), node is according to time started of operation, the operation node procedure, the collecting test data that are in operation are transferred to monitor supervision platform with the test data of gathering by monitoring information channel;
Step 40), in test bed operation, the monitor supervision platform control wireless environment analog platform emission background wireless signal of telecommunication is simulated various practical application scenes.
This method also comprises: step 50), the test data that receives of monitor supervision platform storage; Step 60), when monitor supervision platform arrived in the test bed system end of run time, notify node stop operation node procedure in the tested network by monitoring information channel.
The present invention is by using the wireless environment analog platform, can be implemented in sensor network test and the research of carrying out various wireless environments under the laboratory environment; The wireless environment analog platform is based on software-defined radio equipment, and therefore the different scenes recorded of playback are disturbed and noise as required, also can produce the wireless signal of customization by programming; Utilize the flexibility of software-defined radio device height, can be at real time modifying wireless environment analog platform configuration parameter in the system operation, the background noise of conversion scene.
Description of drawings
Fig. 1 is the method for testing flow chart according to sensor network test bed of the present invention system;
Fig. 2 is the composition schematic diagram of test bed system according to an embodiment of the invention;
Fig. 3 is the flow chart of the method for testing of test bed system according to an embodiment of the invention;
Fig. 4 is the structural representation of the server in the monitor supervision platform according to an embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments a kind of sensor network test bed wireless environment analogue system provided by the invention and its implementation are described in detail.
In one embodiment of the invention, the invention provides a kind of sensor network test bed wireless environment analogue system, this system comprises tested network, wireless environment analog platform and monitor supervision platform, described tested network comprises the node of multiple mutual isomery, and the user is provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme; The wireless environment analog platform adopts the software-defined radio device, and monitor supervision platform is controlled its configuration parameter and operation and stopped; Described monitor supervision platform is used for downloading corresponding node procedure by monitoring information channel to node according to the ID of node; Described monitor supervision platform also is used to store the test data that receives, and when the test bed system end of run time arrives, notifies node stop operation node procedure in the tested network by monitoring information channel; Described node is used for the time started according to operation, moves node procedure automatically, and the collecting test data that are in operation are transferred to monitor supervision platform with the test data of gathering by monitoring information channel.
In one embodiment, monitor supervision platform comprises server and database.Wherein, server is used for starting backstage finger daemon platform operation control process the node procedure that the user is provided with is downloaded in the respective nodes by monitoring information channel according to node ID; Be used for backstage finger daemon test data and collect the test data that the transmission of process receiving node comes, test data is stored in the corresponding table of database according to the project information that comprises in the test packet, detecting information; Be used for backstage finger daemon platform operation control process when the test bed system end of run time arrives, notify each node stop operation node procedure in the tested network by monitoring information channel.
In one embodiment, comprise the probe program in the sensor network nodes program.In another embodiment, the node image data that is in operation, when being transferred to monitor supervision platform by monitoring information channel, the test data of gathering is further used for moving the probe program, the data acquiring frequency automatic data collection of probe program by setting, the TCP interface that the data that collect are used appointment by monitoring information channel is transferred to monitor supervision platform.
Fig. 1 illustrates the flow chart according to the method for testing of sensor network test bed of the present invention system.Sensor network test bed system comprises tested network and monitor supervision platform, and described tested network comprises the node of multiple mutual isomery.Generally speaking, this method of testing comprises that the user is provided with the ID of node in the tested network, the node procedure of node operation, the time started and test bed system end of run time (S100) of node operation according to the test bed operating scheme; Monitor supervision platform is downloaded corresponding node procedure (S200) according to the ID of node by monitoring information channel in node; Node moves node procedure according to the time started of operation, and the collecting test data that are in operation are transferred to monitor supervision platform (S300) with the test data of gathering by monitoring information channel; In the test bed operation, the monitor supervision platform control wireless environment analog platform emission background wireless signal of telecommunication is simulated various practical application scenes (S400).Further, this method also comprises the test data (S500) that the monitor supervision platform storage receives; When monitor supervision platform arrived in the test bed system end of run time, notify node stop operation node procedure (S600) in the tested network by monitoring information channel.
In one embodiment, step S200 is included in further that platform operation control process downloads to the node procedure that the user is provided with in the respective nodes by monitoring information channel according to node ID in the backstage finger daemon in the server.
In one embodiment, among the step S300, node procedure comprises the probe program.In step S300, probe program in the node image data that is in operation, the test data of gathering is transferred to monitor supervision platform by monitoring information channel further comprises node operation probe program, the data acquiring frequency automatic data collection of probe program by setting, the TCP interface that the data that collect are used appointment by monitoring information channel is transferred to monitor supervision platform.
In one embodiment, in step S400, the wireless environment analog platform comprises the software-defined radio device.In step S400, the wireless environment analog platform can produce wireless signal by dual mode, and these signals are used for the wireless environment of analog sensor network test bed, make it more approaching real applied environment.The a kind of of wireless signal producing method is interference and the noise of recording different scenes by the software-defined radio device, when test bed moves then these actual signal playback gone out; Another is that the software-defined radio device produces the wireless signal of customization by programming, and these signals constitute test bed background wireless environment.
In yet another embodiment, step S400 further comprises: the configuration parameter that the wireless environment analog platform is sent according to monitor supervision platform is provided with software-defined radio device (S410); The wireless environment analog platform begins the transmitting radio background noise according to the instruction of monitor supervision platform, forms wireless background environment (S420); The wireless environment analog platform can be according to the instruction of monitor supervision platform and the radio background noise (S430) of other form of configuration parameter conversion; The wireless environment analog platform stops to send radio background noise (S440) according to the instruction of monitor supervision platform.
In one embodiment, in step S500, monitor supervision platform comprises server and database.In another embodiment, step S500 comprises that further the test data process of collecting is collected the test data that the receiving node transmission comes automatically in the backstage finger daemon in the server, according to the project information that comprises in the test packet, detecting information test data is stored in the corresponding table of database.
In one embodiment, step S600 further comprises in the backstage finger daemon in the server platform operation control process when the test bed end of run time arrives, notifies in the tested network each node stop to move node procedure.
Fig. 2 illustrates an object lesson according to system of the present invention, and in this example, the test envelope system comprises three parts: be respectively and comprise multiple heterogeneous nodes, wireless environment analog platform and monitor supervision platform.Tested network comprises: formations such as high-speed wireless sensing device network node, middle low-speed sensor network node, multi-functional gateway, wireless notebook, desktop computer server, wireless router, the network switch and router.Wherein, high-speed wireless sensing device network node comprises that high performance embedded CPU and WiFi module constitute, and middle low-speed sensor network joint comprises custom protocol chip node, IEEE802.15.4 protocol node, bluetooth nodes.Carry out networking according to tested networking agreement between the node.The wireless environment analog platform is based on the software-defined radio device, by the monitor supervision platform configuration parameter and control its operation or stop.Monitor supervision platform is connected to equipment in the tested network by Ethernet, and the control operation network operation also obtains test data, data database storing and event log.
Fig. 3 illustrates the example flow diagram of the method for testing of test bed system according to an embodiment of the invention.
Step S301, the user is provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme.
The test bed system uses beginning, and this moment, user account was built up at the test bed monitor supervision platform, and the user has been ready to the scheme and relevant node procedure of test bed operation.If this moment, user account was not built up, the user can set up proper account to monitor supervision platform keeper application, and account association attributeses such as user's the authority and the term of validity are set.The keeper sets this user's corresponding authority according to user's setting by the mode of webpage, and this authority is stored in the authority list in the database.
The user signs in in the test bed system by browser, and system will operate according to this user's associated rights that the monitor supervision platform keeper is provided with.
The user creates a test bed project, the information such as node type of user that project name, this project comprise, the project description are set, using.
The user is configured the test bed node.According to the test bed operating scheme, the user is provided with and selects the test bed node, and node ID number, information such as sub-clustering whether are set.
The user is provided with relevant node procedure according to the needs of test bed operation.According to node type and use the role different different node procedures is set.
The user is provided with the operation time started and the test bed system finishing time of each node or all kinds node.Different and role's is different according to node type, sets the time started in batches, and perhaps individual node is independently set the time started.
Step S302, according to user's setting, platform operation control process downloads to the program that the user configures in the respective nodes according to node serial number in the backstage finger daemon in the server, and the correctness of downloading by check code assurance program.
Step S303, each node was brought into operation by hardware controls automatically according to the time that brings into operation.
According to user's setting, the throughput probe program of each intranodal brings into operation, and the probe program is gathered throughput data automatically by the data acquiring frequency of setting, and the probe program is transferred to the data that collect the server on backstage by the TCP interface then.
Step S304, in the test bed operation, the environment of plant background wireless signal of telecommunication that the emission of monitor supervision platform control wireless environment analog platform records in advance, simulation environment of plant practical application scene.
Step S305, server background finger daemon test data collection process is collected automatically and is received the throughput data that the transmission of probe program comes, in according to the project information that comprises in the packet, testing throughput information storage being shown accordingly to database.
Step S306, the concluding time, system moved the program running that the control process stops each sensor network nodes by platform in the backstage finger daemon in the server, stops the operation of wireless environment analog platform simultaneously when arriving.
The user checks result data according to the parameter that authority is provided with database table, by can result data being downloaded to subscriber's local by the mode of FTP.
Whether supervisory control system inquiry user carries out next project, if carry out next project, otherwise test bed system end of run, user log off.
Monitor supervision platform comprises server and database.Server is made up of two major parts, as shown in Figure 4.One is the backstage finger daemon of test bed operation control and collection monitoring data message.Another one is the Web server towards the test bed user interface.Two parts are all based on the Linux platform, and Web server is made up by Apache and PHP, and database server adopts PostgreSQL, and all platforms are all followed the GNU standard.
Web server comprises that partly user's login, project management, test and management, data are checked, data are downloaded and subscriber management function.The user login management user login operation, after the user filled in logon name and password, system showed corresponding menu item according to the authority that the user has.If the system manager then has the authority of leading subscriber.The main management project essential information of project management comprises project name, the project description, the director of the affiliated dependence test of this project etc.Test and management is responsible for testing essential information, the director who comprises test name, affiliated project, test specification and test, simultaneously when the test owner enters test and management, frame structure, the tested node of this test optional test bed, program, the time started of test, concluding time that can the configuration testing data.Data check can display items display under the result data of certain test, the result data of test shows with the form of form.The user can download to subscriber's local with the test data that obtains by data download module.
The backstage finger daemon comprises platform operation control and two parts of test data collection.The operation of platform operation control finger daemon controlling platform, the test parameter table in the Query Database regularly at regular intervals, judge whether to be about to the test carried out, if have in the node that just program is downloaded to appointment, in the moment that test run begins, send instruction and allow test bed move, instruction is sent in test when finishing allowing test bed stop.Test data is collected finger daemon and is collected the test data that test bed is beamed back, and according to project under it and test, data is deposited test data as a result in the table.
It should be noted that above embodiment at last only in order to describe technical scheme of the present invention rather than the present technique method is limited, the present invention can extend to the combination of one or more embodiment on using.
Claims (14)
1. sensor network test bed wireless environment analogue system, comprise tested network, wireless environment analog platform and monitor supervision platform, described tested network comprises the node of multiple mutual isomery, the wireless environment analog platform adopts the software-defined radio device, and monitor supervision platform is controlled each configuration parameter and operation and stopped;
Wherein, the user is provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme; Described monitor supervision platform is used for downloading corresponding node procedure by monitoring information channel to node according to the ID of node, be used to store the test data that receives, when the test bed system end of run time arrives, notify node stop operation node procedure in the tested network by monitoring information channel; Described node is used for the time started operation node procedure according to operation, and the collecting test data that are in operation are transferred to monitor supervision platform with the test data of gathering by monitoring information channel.
2. the system of claim 1, wherein, described monitor supervision platform comprises server and database; Described server is used for starting backstage finger daemon platform operation control process the node procedure that the user is provided with is downloaded in the respective nodes by monitoring information channel according to node ID.
3. the system of claim 2, wherein, described server is used for collecting the test data that the transmission of process receiving node comes in backstage finger daemon test data, according to the project information that comprises in the test packet, detecting information test data is stored in the corresponding table of database, and be used for when the test bed system end of run time arrives, notifying in the tested network each node stop to move node procedure by monitoring information channel in backstage finger daemon platform operation control process.
4. the system of claim 1, wherein, described node procedure comprises the probe program.
5. the system of claim 4, wherein, described node operation probe program is come the data acquiring frequency automatic data collection by setting, and the TCP interface that the data that collect are used appointment by monitoring information channel is transferred to monitor supervision platform.
6. the system of claim 1, wherein, described tested network comprise following one or more: high-speed wireless sensing device network node, middle low-speed sensor network node, multi-functional gateway, wireless notebook, desktop computer server, wireless router, the network switch and router.
7. the method for testing of a sensor network test bed system, described sensor network test bed system comprises tested network and monitor supervision platform, and described tested network comprises the node of multiple mutual isomery, and this method comprises:
Step 10), user are provided with the ID of node in the tested network, the node procedure of node operation, the time started and the test bed system end of run time of node operation according to the test bed operating scheme;
Step 20), monitor supervision platform is downloaded corresponding node procedure according to the ID of node by monitoring information channel in node;
Step 30), node is according to time started of operation, the operation node procedure, the collecting test data that are in operation are transferred to monitor supervision platform with the test data of gathering by monitoring information channel;
Step 40), in test bed operation, the monitor supervision platform control wireless environment analog platform emission background wireless signal of telecommunication is simulated various practical application scenes.
8. the method for claim 7 also comprises:
Step 50), monitor supervision platform is stored the test data that receives;
Step 60), when monitor supervision platform arrived in the test bed system end of run time, notify node stop operation node procedure in the tested network by monitoring information channel.
9. the method for claim 7, wherein, described step 20) also comprise: platform operation control process downloads to the node procedure that the user is provided with in the respective nodes by monitoring information channel according to node ID in the backstage finger daemon in server.
10. the method for claim 7, wherein, described step 30) in, node procedure comprises the probe program, node operation probe program, the data acquiring frequency automatic data collection of probe program by setting, the TCP interface that the data that collect are used appointment by monitoring information channel is transferred to monitor supervision platform.
11. the method for claim 7, wherein, in step 40) in, the mode that the wireless environment analog platform that comprises the software-defined radio device produces wireless signal comprises: record the interference and the noise of different scenes by the software-defined radio device, during the test bed operation these actual signal playback are gone out; Perhaps the software-defined radio device produces the wireless signal of customization by programming, constitutes test bed background wireless environment.
12. the method for claim 7, wherein, step 40) also comprise:
Step 410), the configuration parameter sent according to monitor supervision platform of wireless environment analog platform is provided with the software-defined radio device;
Step 420), the wireless environment analog platform begins the transmitting radio background noise according to the instruction of monitor supervision platform, forms wireless background environment;
Step 430), the wireless environment analog platform can be according to the instruction of monitor supervision platform and the radio background noise of other form of configuration parameter conversion;
Step 440), the wireless environment analog platform stops to send the radio background noise according to the instruction of monitor supervision platform.
13. the method for claim 8, wherein, in step 50) in, monitor supervision platform comprises server and database, wherein the test data process of collecting is collected the test data that the receiving node transmission comes automatically in the backstage finger daemon in the server, according to the project information that comprises in the test packet, detecting information test data is stored in the corresponding table of database.
14. the method for claim 8, wherein, step 60) also comprise: when the test bed end of run time arrived, platform operation control process was notified each node stop operation node procedure in the tested network in the backstage finger daemon in the server.
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