CN101730113A - Reconfigurable wireless measure and control network platform based on Zigbee technology - Google Patents
Reconfigurable wireless measure and control network platform based on Zigbee technology Download PDFInfo
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Abstract
The invention discloses a reconfigurable wireless measure and a control network platform based on a Zigbee technology, belonging to the technical field of wireless network communication. The platform comprises a wireless communication module, a controller module, a sensor module, a serial communication module and a power supply module, wherein, the wireless communication module is connected with the controller module and the sensor module by an eight-path GPIO interface, and is connected with the serial communication module by a UART interface; the power supply module supplies power for each module; and the platform is connected with an upper computer by a router and a central coordinator. Compared with the prior art, the invention has the greatest characteristic that distributed reconfigurable zigbee wireless measure and a control network communication is realized with the support of software.
Description
Technical field
The present invention relates to a kind of restructural radio fest and control network platform, belong to the wireless network communication technique field based on the Zigbee technology.
Background technology
Advanced wireless industrial measurement and control network combines sensor technology, embedded system technology, distributed information processing and the communication technology, the various environment in monitoring in real time collaboratively, perception and the collection network distributed areas or the information of monitoring target, and these information are handled, obtain detailed and information accurately, be sent to the user who needs these information, be one of hot research focus of current theory and technology, wide technology application prospect is arranged.
But now domestic industrial measurement and control network technology also has big gap from above-mentioned target, still adopts wired tracking and command network.Many large enterprises, for example petrochemical enterprise, coal mining enterprise, the production region disperses, and the professional division of labor is complicated; Production environment is abominable, even gaseous contamination, inflammable and explosive very danger etc., and these environment adopt communications to be only the prioritization scheme of dealing with problems.Like this, can be so that the installation of control centre, maintenance, management be more simple, production control system is more stable, thereby reaches production efficiency and the fail safe that improves petrochemicals.
There are many unavoidable problems in wired measurement and control network: the comprehensive wiring construction is complicated, along with the increase of platform quantity, and the corresponding increase of number of, lines.In intensive installation occasion, hundreds of circuits are intricate, and how number of devices also can cause circuit long.Especially at the environment of space resources anxiety, under the situation of placing large number quipments (as illumination, ventilating air-conditioning etc.), reasonably wiring is difficult more.In wiring process, to consider that also equipment to the factors such as electromagnetic interference that circuit produces, has increased the difficulty of cable wiring manufacture more.The cost height, useful life is short.A large amount of leads causes bigger cost.In some occasion, because environment is abominable, the useful life of lead is short, needs frequently to change, and has increased cost again.Very flexible is if the terminal location adjustment just needs to adjust circuit even rewiring.Poor stability, the one, if the data need to be keep secret of transmission, then some network is stolen easily.The 2nd, in the occasion of unattended duty, some circuit very easily is cut.
Owing to have these problems, use the radio fest and control network to replace wired measurement and control network to represent development trend.Use the radio fest and control network will greatly improve the flexibility of information system, maintainability, extensibility and fail safe reduce complexity and cost.The multifunction wireless measurement and control network has been represented the development trend of measurement and control area.The user wishes the acquisition function of integrated more information, the range of application of expanding system.And wish that transmission of Information speed is higher, and use cost is lower.
The ZigBee wireless network communication technique is emerging low complex degree, low cost, low-power consumption and low rate wireless connect technology, and its basis is the IEEE802.15.4 technical standard.The Zigbee The Application of Technology at first is a sensor network, the very application of coincidence senser network of every characteristics of this technology.In December, 2000, IEEE set up IEEE802.15.4 working group, was responsible for the agreement of formulating physical layer and MAC layer specially, and August calendar year 2001, ZigBee alliance set up.This alliance mainly is responsible to define the upper-layer protocol of network layer to application layer.In the several years in future, the ZigBee technology will enter people's life, career field from every aspect.In many wireless communication technologys, the Zigbee technology occurs the latest, but cuts the pin of appearing rapidly with its special advantages, has started the upsurge of theoretical and application study in the whole world.At present, Texas Instrument, Motorola, Siemens, big manufacturer such as Philip has released the Zigbee chip of oneself successively, has promoted the industrialization process of Zigbee technology more.
Therefore adopting the Zigbee wireless network communication technique to realize the radio fest and control network, is desirable a selection, is the novelty product that meets the TT﹠C system development trend.Because it is later that the Zigbee technology occurs, and the Zigbee technology is used for the radio fest and control network also is in the development test stage.And there is deficiency in existing Zigbee standard to the Distributed Application occasion of network configuration dynamic change, occurs problems such as node loss, routing failure easily, and promptly restructural is poor.Thereby influence the reliability of radio fest and control network.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of restructural radio fest and control network platform based on the Zigbee technology.
A kind of restructural radio fest and control network platform based on the Zigbee technology, platform comprises wireless communication module, controller module, sensor assembly, serial communication modular and power module, wireless communication module connects by 8 road GPIO Interface and Controler modules, be connected with sensor assembly by 8 road GPIO interfaces, be connected with serial communication modular by the UART interface, power module is each module for power supply; Platform is connected with host computer with central coordinator by router.
Described wireless communication module is by the CC2430 chip, antenna, and 24 pin contact pin type interfaces and peripheral circuit are formed, wherein the embedded 2.4GHz DSSS radio-frequency (RF) transceiver of CC2430 and the microcontroller based on 8051 single-chip microcomputers.
Described controller module is the output of platform hardware system, comprises switching value output interface and Chinese matrix liquid-crystal display screen; The switching value output interface is by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430, Chinese matrix liquid-crystal display screen model LMS12864 serial mode, built-in chip for driving and international secondary character library.
Described sensor assembly possesses 8 road signal input capabilities, is to realize that by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430 sensor assembly model DHT91 takies the input of 2 road signals.
Described serial communication modular adopts the technical grade serial port chip of the high reliability of Maxim company, model MAX232i.
Described power module has adopted the two voltage modes of duplicate supply, and duplicate supply is Switching Power Supply and 3 joint AAA battery supplies; Two voltages are 5V and 3.3V, and wherein 3.3V voltage carries out 5V to the 3.3V level conversion by the AS1117 chip of Atmel company.
The method of work of the above-mentioned restructural radio fest and control network platform based on the Zigbee technology is as follows:
1) deposits the address of central coordinator and the address of several platforms that constitute restructural radio fest and control network in host computer;
2) host computer is to message transmission between the controller module and issue:
Upper computer software provides friendly graphic user interface, the user issues control information by graphic user interface, and control information is transferred to central coordinator by the serial interface cable between host computer and the central coordinator, make control information enter the radio fest and control network, receive the purpose platform address searching of information as required and finally be transferred to this purpose platform, the purpose platform is issued this control information by controller module;
3) transducer is to the message transmission between the host computer:
The information that the sensor assembly of platform is gathered, enter the radio fest and control network through platform, address according to central coordinator, seek and finally be transferred to central coordinator, be transferred to host computer by the serial interface cable between host computer and the central coordinator again, host computer passes to the user by graphic user interface;
4) routing forwarding of information:
Platform is judged the information of receiving, if destination address and this platform address of this information are inconsistent, then this information is carried out routing forwarding to other platform, finally is transferred to central coordinator and finishes routing forwarding up to this information; If surpass the maximum routing forwarding number of times of setting in advance, then this packet is dropped;
5) realization of reconfigurability:
When the platform in the network causes its communication path to be hindered because measurement environment of living in changes, need adjust network configuration, by restructural Cluster-Tree+AODVjr routing algorithm and network layer address allocation algorithm, make and multi-platformly can form the measurement environment that new ZigBee network configuration adapts to variation, the platform cut-through thing that network after the adjustment structure is hindered communication path, again communicate, thereby improved the reliability of network service, this process is realized by the radio communication program of platform software system.
The present invention compared with prior art, maximum characteristics be by improve routing algorithm and network layer address allocation algorithm realized distributed, reconfigurable zigbee radio fest and control network.
Advantage of the present invention comprises:
1, works in open frequency 2.4GHz, low cost, low-power consumption, jamproof wireless data transmission platform.
2, wireless transmission or storage are carried out in data or the issue control information that can gather the polytype transducer in network.
3, the ZigBee technology is applied in this platform, improves the networking capability of platform, the fault-tolerance of network and robustness.
4, some platforms form one distributed, reconfigurable radio fest and control network is for the high reliability of radio fest and control network application lays the foundation.
Description of drawings
Fig. 1 is the structured flowchart of platform of the present invention.
Fig. 2 is the schematic diagram of the radio fest and control network of some platforms compositions.
Fig. 3 is the software flow pattern of platform of the present invention.
Fig. 4 is a radio fest and control network tree network restructural networking strategy schematic diagram of the present invention.
Fig. 5 is a radio fest and control network Star Network restructural networking strategy schematic diagram of the present invention.
Wherein, 1-1, wireless communication module, 1-2, serial communication modular, 1-3, controller module, 1-4, sensor assembly, 1-5, power module; 2-1, central coordinator, 2-2, router, 2-3, terminal node; 3-1, RN storage capacity, 3-2, platform numbering, 4-1, RN storage capacity, 4-2, platform numbering.
Embodiment
Embodiment:
A kind of restructural radio fest and control network platform based on the Zigbee technology, structure as shown in Figure 1, comprise wireless communication module (1-1), controller module (1-3), sensor assembly (1-4), serial communication modular (1-2) and power module (1-5), wireless communication module (1-1) connects by 8 road GPIO Interface and Controler modules (1-3), be connected with sensor assembly (1-4) by 8 road GPIO interfaces, be connected with serial communication modular (1-2) by the UART interface, power module (1-5) is each module for power supply; Platform is connected with host computer with central coordinator (2-1) by router.
Described wireless communication module is by the CC2430 chip, antenna, and 24 pin contact pin type interfaces and peripheral circuit are formed, wherein the embedded 2.4GHz DSSS radio-frequency (RF) transceiver of CC2430 and the microcontroller based on 8051 single-chip microcomputers.
Described controller module is the output of platform hardware system, comprises switching value output interface and Chinese matrix liquid-crystal display screen; The switching value output interface is by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430, Chinese matrix liquid-crystal display screen model LMS12864 serial mode, built-in chip for driving and international secondary character library.
Described sensor assembly possesses 8 road signal input capabilities, is to realize that by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430 sensor assembly model DHT91 takies the input of 2 road signals.
Described serial communication modular adopts the technical grade serial port chip of the high reliability of Maxim company, model MAX232i.
Described power module has adopted the two voltage modes of duplicate supply, and duplicate supply is Switching Power Supply and 3 joint AAA battery supplies; Two voltages are 5V and 3.3V, and wherein 3.3V voltage carries out 5V to the 3.3V level conversion by the AS1117 chip of Atmel company.
The method of work of the above-mentioned restructural radio fest and control network platform based on the Zigbee technology is as follows:
1) deposits the address of central coordinator and the address of several platforms that constitute restructural radio fest and control network in host computer;
2) host computer is to message transmission between the controller module and issue:
Upper computer software provides friendly graphic user interface, the user issues control information by graphic user interface, and control information is transferred to central coordinator by the serial interface cable between host computer and the central coordinator, make control information enter the radio fest and control network, receive the purpose platform address searching of information as required and finally be transferred to this purpose platform, the purpose platform is issued this control information by controller module;
3) transducer is to the message transmission between the host computer:
The information that the sensor assembly of platform is gathered, enter the radio fest and control network through platform, address according to central coordinator, seek and finally be transferred to central coordinator, be transferred to host computer by the serial interface cable between host computer and the central coordinator again, host computer passes to the user by graphic user interface;
4) routing forwarding of information:
Platform is judged the information of receiving, if destination address and this platform address of this information are inconsistent, then this information is carried out routing forwarding to other platform, finally is transferred to central coordinator and finishes routing forwarding up to this information; If surpass the maximum routing forwarding number of times of setting in advance, then this packet is dropped;
5) realization of reconfigurability:
When the platform in the network causes its communication path to be hindered because measurement environment of living in changes, need adjust network configuration, by restructural Cluster-Tree+AODVjr routing algorithm and network layer address allocation algorithm, make and multi-platformly can form the measurement environment that new ZigBee network configuration adapts to variation, the platform cut-through thing that network after the adjustment structure can make communication path be hindered, again communicate, thereby improved the reliability of network service.This process is realized by the radio communication program of platform software system.
The platform software system
Software systems comprise primary control program, director demon, transducer program, radio communication program and serial communication program.
Primary control program
The main effect of main control module is the initialization of finishing hardware and software system various piece, the setting of various parameters, and the networking of platform/networking is prepared.Wherein initialization section comprises the initialization of chip program, the initialization of LCD screen, the initialization of sensor chip etc. are after the initialize routine of finishing above various piece, main control module will carry out corresponding networking/go into net operation according to the platform classification, and finally enters the poll wait state.
Director demon
Director demon carries out decapsulation and decoding with the control information of receiving, judges by which controller module interface issue control information according to decode results then, issues any switching value control information.Because platform integrated LCD LCDs, if what then receive is the lcd screen display message, just calls the LCD display subroutine data are shown, subprogram then can be called corresponding function customer requirements issued command information is write in the LCD screen its demonstration.
The transducer program
The transducer program realizes driving, humiture data computing and the numerical value conversion of DHT91 Temperature Humidity Sensor.Transducer routine call DHT91 driver is realized reading in digital humiture data from DHT91 through 2 tunnel serial GPIO interfaces, and can carry out certainty of measurement and set, and measures operations such as calibration.The transducer program is converted to decimal data by calculating and numerical value conversion with the humidity data of 12bit precision and the temperature data of 14bit precision.The transducer program has three kinds of working mechanisms: the measurement of receiving a mandate, regularly measure and the thresholding measurement.The measurement of receiving a mandate is that primary control program just carries out corresponding data acquisition when receiving the measuring command that host computer sends, and is returned to host computer.Regularly measuring is to preestablish a measuring period, by pick-up transducers information and send to host computer measuring period.When adopting thresholding to measure, when temperature or humidity reach predefined certain thresholding, can produce alarm signal, program adopts interrupt mode, and alarm signal and humiture data are sent.
Radio communication program
Radio communication program is the key that platform realizes forming based on the Zigbee technology radio fest and control network.Radio communication program is realized the maintenance of Zigbee network, and data send and Data Receiving.
Distributed and reconfigurability is a main innovate point of the present invention.Distributed restructural ZigBee network is meant the network that the network configuration that is distributed in certain zone can dynamic change.So-called network configuration dynamic change has the implication of two aspects, and a kind of situation is meant that the network topology structure that has formed does not change, but variation has taken place for the platform identity of some platform or the network degree of depth; Another kind of situation is meant that the network topology structure that has formed changes.
The present invention has realized restructural AODVjr routing algorithm and reconfigurable network layer address allocation algorithm in the radio communication program of platform software system, multi-platformly can form distributed reconfigurable ZigBee network thereby make.
Restructural AODVjr routing algorithm
In the ZigBee technology, the Cluster-Tree algorithm is fit to the limited platform of those storage capacities very much, platform is received father's platform or the sub-platform that at once grouping is sent to it after the grouping in this algorithm, do not need route finding process, yet in platform network pockety, the Cluster-Tree algorithm has bigger average end-to-end time delay, and cause in the network distribution of traffic unbalanced in this case easily, thereby must cause the lower platform of the degree of depth often to need to handle the platform more higher than the degree of depth more divides into groups, cause the low platform of the degree of depth to exhaust electric weight prematurely easily than the higher platform of the degree of depth, form the network division phenomenon, cause communication disruption.The algorithm of AODVjr can find optimum or the route more excellent with respect to Cluster-Tree, has reduced average end-to-end time delay, makes that the unbalanced situation of distribution of traffic has also obtained alleviation in the network.But AODVjr needs enough memory spaces store routing table, and AODVjr has higher control expense, and Cluster-Tree does not then need to send the control grouping.Routing Protocol in the restructural ZigBee network has used the algorithm of Cluster-Tree+AODVjr, two kinds of agreements are had complementary advantages, so that find optimum or the route more excellent with respect to Cluster-Tree, reduced average end-to-end time delay, made that the unbalanced situation of distribution of traffic has also obtained alleviation in the network.
The reconfigurable network layer address distributes
In the ZigBee route, platform can be divided into two classes: RN+ and RN-.Wherein RN+ is meant the platform with enough memory spaces and ability execution AODVjr Routing Protocol, RN-is meant that its memory space is limited, do not have the platform of the ability of carrying out the AODVjr Routing Protocol, RN-can only use the Cluster-Tree algorithm process after receiving a grouping.Carry out the restructural networking in order better to adapt to the measurement environment that changes, in reconfigurable network, all use the RN+ platform.
The platform that adds the ZigBee network is formed a logic tree (Cluster-Tree) by the association process that the MAC layer provides, and according to Cluster-Tree structure distribution network address.When the platform in the network allows a new platform to add network by it, just formed set membership between them, each platform that enters network all can obtain in network the unique 16bit network address of father's platform for its distribution.In reconfigurable network, Star Network is treated to platform distribution network address as a kind of special circumstances (degree of depth is 2) of Cluster-Tree structure.
The specific implementation of reconfigurability
The reconfigurability of network is mainly reflected in platform environment of living in the network when changing.When causing its communication path to be hindered when the platform in the network because measurement environment of living in changes, need network configuration be adjusted, making by the new network configuration after the allosteric can the cut-through thing by the retaining platform, communicates again.Herein, platform situation about being stopped by barrier all can not be set up expression with the communication path between 2 o'clock; Platform cut-through thing hinders and then rebulids expression with the communication path between two platforms, and so-called penetrability refers to the ability of penetrate thing.
Among Fig. 4 (a), after the network organizing of a Cluster-Tree structure is finished, because the variation of measurement environment on every side causes the communication path between platform 7 and the platform 3 to be hindered by barrier, make platform 7 break away from whole network, it can not be detected data and transmit to the last layer platform.Platform 7 will carry out the network configuration reorganization this moment, at first calculate the network address of the platform (platform 6) all identical with father's platform with its degree of depth by network address distribution principle.Use the AODVjr routing algorithm to seek this platform then,, redistribute the network address, in case set up communication link between platform 6 and the platform 7 then think and finish primary network reconstruct if find then platform 7 is added network again as the sub-platform of platform 6.If do not find the degree of depth platform all identical with father's platform on every side being blocked platform (platform 5), then platform will be by network address distribution principle calculating and the network address of platform (platform 4) that father platform different identical with its degree of depth.Use the AODVjr routing algorithm to seek this platform then,, redistribute the network address, in case set up communication link between platform 4 and the platform 5 then think and finish primary network reconstruct if find then platform 5 is added network again as the sub-platform of platform 4.Though the network topological structure after the reconstruct still is the Cluster-Tree structure, but be that to become the degree of depth be 5 network (as Fig. 4 (b)) for 4 network from before the degree of depth, father's platform of platform 7 also becomes platform 6 from platform 3, and father's platform of platform 5 also becomes platform 4 from platform 2.
In the reconfigurable network, 2 a kind of special Cluster-Tree structure with Star Network as the degree of depth.Among Fig. 5 (a), after communicating by letter between the platform in the Star Network (platform 4) and coordinator's (central coordinator) platform stopped by barrier, 4 on platform starts the AODVjr routing algorithm and seeks other platforms (platform 5), if find then platform 4 is added network again as the sub-platform of platform 5, in case set up communication link between platform 4 and the platform 5 then think and finish primary network reconstruct.Network after the reconstruct (as Fig. 5 (c)) topological structure then becomes tree network by Star Network.
Serial communication modular
Serial communication modular is the interface of Zigbee network and host computer, and the data message that packaged command information that host computer generates and platform platform are gathered up all will be finished communication in two networks by serial communication modular.Use the interruption method in the serial communication modular, promptly Yun Yong serial ports interrupt service subroutine (ISR, Interrupt Service Routine) is finished serial communication, when on the serial ports value being arranged, then can call the serial ports interrupt vector, interrupt vector then points to program pointer among the corresponding ISR and goes.The operating among the ISR of data that receives carried out, program pointer can be proceeded interrupted just now thing in the preceding place of rebound interruption after ISR finished, the efficient of this method height relatively, and program do not need to wait for serial ports has always improved the real-time of whole wireless platform system.
Upper computer software
Upper computer software adopts Visual C++ to write, and it mainly acts on is for the user provides good man computer interface, finishes to the processing of gathering/uploading data with to the control of whole plateform system.
When the user uses host computer, at first need to carry out serial port setting.The default setting of native system host computer serial ports is a baud rate 38400, no parity check position, 8 bit data positions, 1 position of rest.Concrete serial ports is selected freely to select according to the concrete condition of subscriber computer.After serial port setting is finished, then need to carry out system's setting.Mainly be to finish platform platform MAC layer (MAC, Medium Access Comtrol) address and the setting of placing address information.Click " addnodeaddr " button, will the subdialogue frame be set ejection system, the user clicks the setting that ACK button is then finished whole system after the MAC Address of platform platform is inserted dialog box with the information of placing the address.
When the user need carry out the control information issue, at first need to select the platform that need release news, inserting in information issue text box then needs information releasing, and " send message " button is clicked in the input back can finish the information issuing function of whole plateform system.When the user needs real-time understanding field data, at first need need to select the platform of Information Monitoring, click " monitor " button then, then can finish the data acquisition of platform, the data that collect will be presented at behind the platform in the corresponding data text frame.When the family need be checked with the measurement data of front sensor, click " data record " button, just can check the measurement historgraphic data recording of the transducer of platform.
Claims (7)
1. restructural radio fest and control network platform based on the Zigbee technology, it is characterized in that, platform comprises wireless communication module, controller module, sensor assembly, serial communication modular and power module, wireless communication module connects by 8 road GPIO Interface and Controler modules, be connected with sensor assembly by 8 road GPIO interfaces, be connected with serial communication modular by the UART interface, power module is each module for power supply; Platform is connected with host computer with central coordinator by router.
2. the restructural radio fest and control network platform based on the Zigbee technology as claimed in claim 1, it is characterized in that, described wireless communication module is by the CC2430 chip, antenna, 24 pin contact pin type interfaces and peripheral circuit are formed, wherein the embedded 2.4GHz DSSS radio-frequency (RF) transceiver of CC2430 and the microcontroller based on 8051 single-chip microcomputers.
3. the restructural radio fest and control network platform based on the Zigbee technology as claimed in claim 1 is characterized in that described controller module is the output of platform hardware system, comprises switching value output interface and Chinese matrix liquid-crystal display screen; The switching value output interface is by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430, Chinese matrix liquid-crystal display screen model LMS12864 serial mode, built-in chip for driving and international secondary character library.
4. the restructural radio fest and control network platform based on the Zigbee technology as claimed in claim 1, it is characterized in that, described sensor assembly possesses 8 road signal input capabilities, be to realize by 8 road GPIO interfaces of 24 pin contact pin type interfaces introducing CC2430, sensor assembly model DHT91 takies the input of 2 road signals.
5. the restructural radio fest and control network platform based on the Zigbee technology as claimed in claim 1 is characterized in that, described serial communication modular adopts the technical grade serial port chip of the high reliability of Maxim company, model MAX232i.
6. the restructural radio fest and control network platform based on the Zigbee technology as claimed in claim 1 is characterized in that, described power module has adopted the two voltage modes of duplicate supply, and duplicate supply is Switching Power Supply and 3 joint AAA battery supplies; Two voltages are 5V and 3.3V, and wherein 3.3V voltage carries out 5V to the 3.3V level conversion by the AS1117 chip of Atmel company.
7. the method for work of the described restructural radio fest and control network platform based on the Zigbee technology of claim 1 is characterized in that method of work is as follows:
1) deposits the address of central coordinator and the address of several platforms that constitute restructural radio fest and control network in host computer;
2) host computer is to message transmission between the controller module and issue:
Upper computer software provides friendly graphic user interface, the user issues control information by graphic user interface, and control information is transferred to central coordinator by the serial interface cable between host computer and the central coordinator, make control information enter the radio fest and control network, receive the purpose platform address searching of information as required and finally be transferred to this purpose platform, the purpose platform is issued this control information by controller module;
3) transducer is to the message transmission between the host computer:
The information that the sensor assembly of platform is gathered, enter the radio fest and control network through platform, address according to central coordinator, seek and finally be transferred to central coordinator, be transferred to host computer by the serial interface cable between host computer and the central coordinator again, host computer passes to the user by graphic user interface;
4) routing forwarding of information:
Platform is judged the information of receiving, if destination address and this platform address of this information are inconsistent, then this information is carried out routing forwarding to other platform, finally is transferred to central coordinator and finishes routing forwarding up to this information; If surpass the maximum routing forwarding number of times of setting in advance, then this packet is dropped;
5) realization of reconfigurability:
When the platform in the network causes its communication path to be hindered because measurement environment of living in changes, need adjust network configuration, by restructural Cluster-Tree+AODVjr routing algorithm and network layer address allocation algorithm, make and multi-platformly can form the measurement environment that new ZigBee network configuration adapts to variation, the platform cut-through thing that network after the adjustment structure is hindered communication path, again communicate, thereby improved the reliability of network service, this process is realized by the radio communication program of platform software system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101917736A (en) * | 2010-08-17 | 2010-12-15 | 中国科学院计算技术研究所 | Sensor network test bed system and test method thereof |
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| CN103528702A (en) * | 2013-10-21 | 2014-01-22 | 北京信息科技大学 | ZigBee-based temperature monitoring device, ZigBee-based temperature monitoring system and implementation method thereof |
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| CN100562021C (en) * | 2007-07-10 | 2009-11-18 | 北京易路联动技术有限公司 | A kind of control method of distributed multi-source data that can be synchronous and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917736A (en) * | 2010-08-17 | 2010-12-15 | 中国科学院计算技术研究所 | Sensor network test bed system and test method thereof |
| CN101917736B (en) * | 2010-08-17 | 2013-01-30 | 中国科学院计算技术研究所 | Sensor network test bed system and test method thereof |
| CN102612171A (en) * | 2012-03-15 | 2012-07-25 | 广东工业大学 | Wireless sensing node |
| CN102612171B (en) * | 2012-03-15 | 2016-07-27 | 广东工业大学 | A kind of wireless sensing node |
| CN103298152A (en) * | 2013-05-09 | 2013-09-11 | 上海龙创节能系统股份有限公司 | Bus-based multi-illuminance collector based on wireless communication |
| CN103298152B (en) * | 2013-05-09 | 2016-04-27 | 上海上实龙创智慧能源科技股份有限公司 | Based on bus type many illumination collector of wireless telecommunications |
| CN103528702A (en) * | 2013-10-21 | 2014-01-22 | 北京信息科技大学 | ZigBee-based temperature monitoring device, ZigBee-based temperature monitoring system and implementation method thereof |
| CN104410705A (en) * | 2014-12-10 | 2015-03-11 | 成都实唯物联网科技有限公司 | Secure multi-peripheral remote cluster control network, networking method and communication method |
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