CN102572873A - Monitoring system of wireless sensor network - Google Patents
Monitoring system of wireless sensor network Download PDFInfo
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- CN102572873A CN102572873A CN2011103970129A CN201110397012A CN102572873A CN 102572873 A CN102572873 A CN 102572873A CN 2011103970129 A CN2011103970129 A CN 2011103970129A CN 201110397012 A CN201110397012 A CN 201110397012A CN 102572873 A CN102572873 A CN 102572873A
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Abstract
The invention discloses a monitoring system of a wireless sensor network, relating to the technical field of network testing and aiming to solve the technical problem on testing the wireless sensor network. The monitoring system comprises a monitoring host, a data transmission network and at least one monitoring terminal; a network topological structure of the data transmission network is in a tree form and is formed by cascading at least one USB (Universal Serial Bus) hub, and each USB hub respectively constitutes each node of the data transmission network; the monitoring host is connected with an uplink port of the USB hub of a root node; the USB hub of each child node is connected to the USB hub of a parent node of each child node through a signal amplifying and transmitting module respectively; and all monitoring terminals are distributed in a wireless sensor network to be tested in a disperse manner, the radio frequency port of each monitoring terminal is respectively connected with each sensor node in the wireless sensor network, and the USB interface of each monitoring terminal is resepectively connected to a downlink port of the USB hub of each node through one signal amplifying and transmitting module. The monitoring system provided by the invention has no interference to the tested network.
Description
Technical field
The present invention relates to the network test technology, particularly relate to a kind of technology of wireless sensor network interception system.
Background technology
Wireless sensor network (WSN:Wireless Sensor Network) is made up of a large amount of microsensor nodes, with the self-organizing network of wireless mode communication.These microsensor nodes have certain perception, communication, computing capability, can realize various data acquisitions and control in real time.
In order to carry out the research-and-development activity of wireless sensor network, need test wireless sensor network.There is the MoteLab platform of Harvard University's exploitation in the existing system that is used for the wireless sensor network test, the MoteWorks platform of the Kansei platform of Ohio Univ's exploitation, the exploitation of Crossbow company.
The joint form of MoteLab platform is single; Its network size is less, and autgmentability is not strong, and the data of the sensor node collection in the network are except carrying out the wireless transmission through radio-frequency module; Also need data be sent to Ethernet through serial ports, this can increase the burden of sensor node CPU.
The Kansei platform is through portable network image data in true environment; The hybrid analog-digital simulation method that adopts actual node to combine with theoretical model; Expanded the scale of network; Strengthened the test effect, but the confidence level of hybrid analog-digital simulation remains further checking, and single interception node can't the whole network of comprehensive monitoring.
In the MoteWorks platform, data that node is gathered and test data are all passed through the wireless mode transmission, have taken the bandwidth of channel, can produce interference to a certain degree to tested wireless sensor network.
Summary of the invention
To the defective that exists in the above-mentioned prior art; Technical problem to be solved by this invention provides and a kind ofly can not increase the sensor node burden; And noiseless to tested network, can be through single wireless sensor network interception system of intercepting the whole wireless sensor network of terminal comprehensive monitoring.
In order to solve the problems of the technologies described above, a kind of wireless sensor network interception system provided by the present invention comprises monitoring main frame, data transmission network, reaches at least one and intercepts the terminal, it is characterized in that:
The network topology structure of said data transmission network is tree-like, is formed by at least one usb hub cascade, and each usb hub is equipped with a uplink port and a plurality of downlink port, and each usb hub is each node of composition data transmission network respectively;
The uplink port of the root node usb hub of said monitoring main frame in USB cable connection data transmission network;
In the said data transmission network, each amplifies the downlink port that transport module is received its father node usb hub through a signal uplink port of each child node usb hub;
The said terminal of respectively intercepting disperses to be laid in the tested wireless sensor network; Each is intercepted the terminal and is equipped with radio frequency interface and USB interface; The radio frequency interface of respectively intercepting the terminal connects each sensor node in the wireless sensor network respectively, and each warp one signal of USB interface of respectively intercepting the terminal amplifies the downlink port that transport module is received each node usb hub of data transmission network respectively;
Said signal amplifies transport module and is made up of two signal amplifiers; Each signal amplifier is equipped with a USB interface, an Ethernet interface; The Ethernet interface of two signal amplifiers in the same signal amplification transport module is interconnected through netting twine, and the USB interface that each signal amplifies two signal amplifiers in transport module constitutes two links that this signal amplifies transport module;
The link that signal between the node amplifies transport module is connected to the uplink port of child node usb hub through the USB cable, and another link is connected to the downlink port of father node usb hub through the USB cable;
Node and intercept a link that signal between the terminal amplifies transport module and be connected to the downlink port of usb hub through the USB cable, another link is connected to the USB interface of intercepting the terminal through the USB cable.
Wireless sensor network interception system provided by the invention; Adopt wired mode to make up and intercept network, intercept the terminal and connect the sensor node of tested wireless sensor network, can not increase the sensor node burden through radio frequency interface; And intercept network and tested wireless sensor network is separate; Do not take wireless sensor network resource and communication channel bandwidth, noiseless to tested network, and can be through the single whole wireless sensor network of terminal comprehensive monitoring of intercepting.
Description of drawings
Fig. 1 is the structural representation of the wireless sensor network interception system of the embodiment of the invention;
Fig. 2 is the structural representation that the signal in the wireless sensor network interception system of the embodiment of the invention amplifies transport module;
Fig. 3 intercepts the constructed data packet format sketch map in terminal in the wireless sensor network interception system of the embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
A kind of wireless sensor network interception system as shown in Figure 1, that the embodiment of the invention provided comprises monitoring main frame, data transmission network, reaches at least one and intercepts the terminal, it is characterized in that:
The network topology structure of said data transmission network is tree-like, is formed by at least one usb hub cascade, and each usb hub is equipped with a uplink port and a plurality of downlink port, and each usb hub is each node of composition data transmission network respectively;
The uplink port of the root node usb hub of said monitoring main frame in USB cable connection data transmission network;
In the said data transmission network, each amplifies the downlink port that transport module is received its father node usb hub through a signal uplink port of each child node usb hub;
The said terminal of respectively intercepting disperses to be laid in the tested wireless sensor network; Each is intercepted the terminal and is equipped with radio frequency interface and USB interface; The radio frequency interface of respectively intercepting the terminal connects each sensor node in the wireless sensor network respectively, and each warp one signal of USB interface of respectively intercepting the terminal amplifies the downlink port that transport module is received each node usb hub of data transmission network respectively;
As shown in Figure 2; Said signal amplifies transport module and is made up of two signal amplifiers; Each signal amplifier is equipped with a USB interface, an Ethernet interface; The Ethernet interface of two signal amplifiers in the same signal amplification transport module is interconnected through netting twine, and the USB interface that each signal amplifies two signal amplifiers in transport module constitutes two links that this signal amplifies transport module;
The link that signal between the node amplifies transport module is connected to the uplink port of child node usb hub through the USB cable, and another link is connected to the downlink port of father node usb hub through the USB cable;
Node and intercept a link that signal between the terminal amplifies transport module and be connected to the downlink port of usb hub through the USB cable, another link is connected to the USB interface of intercepting the terminal through the USB cable.
In the embodiment of the invention, the said terminal of intercepting is a prior art, comprises Receiver Module, data preprocessing module, clock module and communication module; Receiver Module is responsible for receiving data packets for transmission in the surrounding environment; Data preprocessing module is carried out preliminary treatment to the packet that Receiver Module receives; Establishment is adapted at data packets for transmission form in the data transmission network, and clock module is responsible for providing temporal information accurately, and communication module is responsible for pretreated data are uploaded to the monitoring main frame through data transmission network; And the order of reception and the transmission of execution monitoring main frame; Intercept the terminal and be provided with USB interface, adopted the model that is built-in with radio-frequency module be little process chip of CC2531 as microcontroller, and adopt the Ni-MH battery power supply.
As shown in Figure 3, in the embodiment of the invention, the data packet format that the said data preprocessing module of intercepting in the terminal makes up comprises: the frame first symbol of 2 bytes is (like 0xab; 0xcd), the load information of 6～128 bytes, the temporal information of 5 bytes; The channel information of 1 byte; (like 0xff, 0xff), the content of load information wherein is the packet that Receiver Module receives to the frame end symbol of 2 bytes; The content of temporal information is the time of reception point that Receiver Module receives packet, and the content of channel information is the receive channel that Receiver Module receives packet.
In the embodiment of the invention, said usb hub is a prior art, and having adopted model is the USB HUB chip of FE2.1, is provided with 1 uplink port and 7 downlink ports, supports the 480MHZ transmission mode.
In the embodiment of the invention; The signal amplifier that said signal amplifies in the transport module is a prior art; Having adopted model is the usb signal amplification chip of UIC2001; The Ethernet interface of signal amplifier is the RJ45 port; The signal amplifier that signal amplifies an end in the transport module reads in data from USB interface, and signal is amplified the back from its Ethernet interface data is sent to the signal amplifier of this module other end through netting twine, and the signal amplifier of the other end receives after data from its USB interface output from its Ethernet interface; Signal amplifies transport module, and to have overcome the longer transmission distance of usb signal be 5 meters restriction, can make communication distance reach about 50 meters.
In the embodiment of the invention, said monitoring main frame is a PC, and the monitoring main frame receives each through data transmission network and intercepts the packet that upload at the terminal; And to intercepting orders such as terminal transmission startup, end, channel switching and change radio frequency power output; And the packet that receives gathered, merges, stores, merge the back data according to tested network of network protocal analysis, obtain network state information and add up corresponding network performance index (like network topology structure and stability thereof; Transmission path; Network traffics postpone packet loss etc.);
During embodiment of the invention work; Because each startup of intercepting the terminal is different constantly, the internal clocking startup of therefore respectively intercepting the terminal is also asynchronous, in order to obtain unified time information; The monitoring main frame is searched each and is intercepted the repetitive data packet that upload at the terminal after system start-up; And calculate each according to the temporal information in the packet and intercept the time clock correction of terminal room, again according to the temporal information in the unified packet of respectively intercepting the terminal of the time clock correction that calculates, make that respectively to intercept the terminal synchronous relatively.
The monitoring main frame is intercepted the terminal for each and is created a tables of data; Be used to store and respectively intercept the packet that receive at the terminal, and create the packet after a new table is used to store fusion, accomplish respectively intercept the terminal synchronously after; The packet of each tables of data has unified time information; The monitoring main frame travels through the packet in each tables of data successively, and according to clock information ordering, preserve and delete the packet of repetition, thereby obtain the entire packet of tested transmission through network.
The monitoring main frame is resolved the packet that receives; Parse MAC layer information, network layer information, the application layer message of packet; And calculate the packet loss of network according to MAC layer sequence number; Delay according to the temporal information calculated data bag in the packet; Parse the transmission path of packet according to source address, destination address and the network layer sequence number of packet, the inverse adjacency list mode is adopted in the preservation of network topology structure, the numbering at terminal is intercepted in the representative of gauge outfit node in the inverse adjacency list; Write down all source addresses that are the packet of destination address with this gauge outfit node in the chained list of gauge outfit node, all statisticss of intercepting the terminal all are stored in the gauge outfit node of inverse adjacency list.
The monitoring main frame offers the user with multiple display mode with statistics; Network topology structure is adopted graphical display; And the stability curve of network topology structure is provided, the form that each traffic of intercepting the terminal is formed with block diagram shows that network traffics show with curve mode.
Claims (1)
1. a wireless sensor network interception system comprises monitoring main frame, data transmission network, reaches at least one and intercepts the terminal, it is characterized in that:
The network topology structure of said data transmission network is tree-like, is formed by at least one usb hub cascade, and each usb hub is equipped with a uplink port and a plurality of downlink port, and each usb hub is each node of composition data transmission network respectively;
The uplink port of the root node usb hub of said monitoring main frame in USB cable connection data transmission network;
In the said data transmission network, each amplifies the downlink port that transport module is received its father node usb hub through a signal uplink port of each child node usb hub;
The said terminal of respectively intercepting disperses to be laid in the tested wireless sensor network; Each is intercepted the terminal and is equipped with radio frequency interface and USB interface; The radio frequency interface of respectively intercepting the terminal connects each sensor node in the wireless sensor network respectively, and each warp one signal of USB interface of respectively intercepting the terminal amplifies the downlink port that transport module is received each node usb hub of data transmission network respectively;
Said signal amplifies transport module and is made up of two signal amplifiers; Each signal amplifier is equipped with a USB interface, an Ethernet interface; The Ethernet interface of two signal amplifiers in the same signal amplification transport module is interconnected through netting twine, and the USB interface that each signal amplifies two signal amplifiers in transport module constitutes two links that this signal amplifies transport module;
The link that signal between the node amplifies transport module is connected to the uplink port of child node usb hub through the USB cable, and another link is connected to the downlink port of father node usb hub through the USB cable;
Node and intercept a link that signal between the terminal amplifies transport module and be connected to the downlink port of usb hub through the USB cable, another link is connected to the USB interface of intercepting the terminal through the USB cable.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103747463A (en) * | 2014-01-13 | 2014-04-23 | 中国科学技术大学苏州研究院 | Test method for wireless sensor network performances under water environment |
| CN103826238A (en) * | 2014-01-13 | 2014-05-28 | 中国科学技术大学苏州研究院 | Water environment wireless sensor network performance test bed system |
| CN103856976A (en) * | 2012-12-04 | 2014-06-11 | ***通信集团公司 | WLAN device test method, system and device |
| CN104660429A (en) * | 2013-11-19 | 2015-05-27 | 华为技术有限公司 | Method and device for determining network state |
| CN106792811A (en) * | 2016-12-14 | 2017-05-31 | 天津光电通信技术有限公司 | A kind of passive type wireless network interception system |
| CN107682889A (en) * | 2017-09-11 | 2018-02-09 | 北京奇安信科技有限公司 | Wireless network performance method of testing, apparatus and system |
| CN112882970A (en) * | 2021-03-16 | 2021-06-01 | 上海电气集团股份有限公司 | Data connection interface, data acquisition device and data acquisition system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856976A (en) * | 2012-12-04 | 2014-06-11 | ***通信集团公司 | WLAN device test method, system and device |
| CN104660429A (en) * | 2013-11-19 | 2015-05-27 | 华为技术有限公司 | Method and device for determining network state |
| CN103747463A (en) * | 2014-01-13 | 2014-04-23 | 中国科学技术大学苏州研究院 | Test method for wireless sensor network performances under water environment |
| CN103826238A (en) * | 2014-01-13 | 2014-05-28 | 中国科学技术大学苏州研究院 | Water environment wireless sensor network performance test bed system |
| CN106792811A (en) * | 2016-12-14 | 2017-05-31 | 天津光电通信技术有限公司 | A kind of passive type wireless network interception system |
| CN107682889A (en) * | 2017-09-11 | 2018-02-09 | 北京奇安信科技有限公司 | Wireless network performance method of testing, apparatus and system |
| CN112882970A (en) * | 2021-03-16 | 2021-06-01 | 上海电气集团股份有限公司 | Data connection interface, data acquisition device and data acquisition system |
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Application publication date: 20120711 |