CN101325530B - Two grade network and communication method thereof - Google Patents
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Abstract
The invention discloses a second-level network, including a wireless sensor network and a aggregated communications network, wherein, the wireless sensor network is used for acquiring data and transmitting the data to the aggregated communications network; while the aggregated communications network is used for transmitting the data acquired by the wireless sensor network to object addresses. The invention organically combines the two networks, thereby exerting the distance transmission advantage of the aggregated communications network, and extending the transmission distance of the wireless sensor network. The invention sets up a format conversion device between the wireless sensor network and the aggregated communications network to organically combine the two networks, thereby exerting the distance transmission advantage of the aggregated communications network, and extending the transmission distance of the wireless sensor network. The invention also discloses a network communication method.
Description
Technical field
The present invention relates to network technology, relate in particular to a kind of two grade network and communication means thereof.
Background technology
Wireless sensor network is the sensor network technique of a kind of short distance, low-power consumption, low transmission rate, low cost, low complex degree, is widely used in aspects such as consumer electronic devices, automotive electronics, industrial sensor network, building automatic control.
The network topology structure of wireless sensor network is flexible, power consumption is low, networking is convenient, the data capability to resist destruction is strong, message transmission rate is low, therefore is fit to very much the transmission of sensing data, and wireless sensor network relies on the flexibility of its topological structure, can make up extremely complicated wireless sensor network, the transfer of data mechanism of its high survivability can effectively ensure the transmission of data simultaneously.
But a lot of occasions is arranged when the employing wireless sensor network, can be limited to by the technical parameter that itself exists, characteristics according to network, its radio-frequency emission power has determined the distance of its wireless transmission distance, according to the rules, its transmission range is shorter, therefore, the transmission range of individual node is very limited, for remote data transmission applications has been brought inconvenience.Certainly in concrete the application, use the technological means that increases radio-frequency power can increase data transmission distance, but so way is also brought many drawbacks, because the network radio frequency frequency range is to be public frequency range mostly, excessive radio-frequency power can produce other nearby device and disturb, simultaneously get data passes, can not ceaselessly increase radio-frequency power for extra long distance.Also has a kind of method scope of can increasing network coverage effectively, just be to use the data routing function in the complicated topological network to enlarge data transmission scope, this method is not suitable for the overlength distance transmission, whole network cost can the undying increase along with the expansion of data transmission range, and the repeatedly route of data has increased time of data transfer simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of network configuration that can adapt to long-distance transmissions, and this network configuration can make that the transmission range of wireless sensor network obtains extending.
In order to solve the problems of the technologies described above, the present invention proposes a kind of two grade network, comprises wireless sensor network and trunking communication network; Described wireless sensor network is used for image data, and with this transfer of data to described trunking communication network; Described trunking communication network in order to transfer of data that described wireless sensor network is gathered to destination address.
Wherein, the interface of described wireless sensor network and described trunking communication network is provided with format conversion apparatus, and described format conversion apparatus is finished the format conversion of the intercommunication of above-mentioned two kinds of networks.
Wherein, described format conversion apparatus comprises processing unit, in order to resolve from the data of source network and to be converted into the form that objective network is supported;
Interface unit in order to connect with described two kinds of networks, receives data from described source network, and the data after the described processing unit conversion are sent to described objective network;
Memory cell is in order to stored program and data.
Preferably, described trunking communication network also be used for from the transfer of data of back-end network/equipment to described wireless sensor network.
Preferably, described wireless sensor network is the ZIGBEE network, and it comprises coordinator node and terminal node, and described coordinator node is communicated by letter with described format conversion apparatus, and described terminal node is communicated by letter with described coordinator node.
Wherein, described trunking communication network is the TETRA network, and it comprises front end data terminal, Back end data terminal, front end base station, base station, rear end, data gateway;
Described front end data terminal and described ZIGBEE network service;
Described Back end data terminal and the back-end network/devices communicating that is connected with this TETRA network;
Described front end base station connects described front end data terminal and described data gateway, realizes the communication between described front end data terminal and the described data gateway;
Base station, described rear end connects described Back end data terminal and described data gateway, realizes communicating by letter between described Back end data terminal and the described data gateway.
Wherein, also comprise data server, this data server links to each other with described data gateway, in order to the data of storage via described data gateway.
Described data server also is used for the type via the data of described data gateway is discerned; And described data gateway adopts corresponding channel transceiver data according to the recognition result of described data server.
Preferably, described trunking communication network is the TETRA network, and it comprises data terminal, base station, data gateway;
Described data terminal and described network communication of wireless sensor;
Described base station connects described data terminal and described data gateway, realizes the communication between described data terminal and the described data gateway;
Described trunking communication network also comprises data server, and this data server links to each other with described data gateway, in order to the data of storage via described data gateway.
On the other hand, in order to solve the problems of the technologies described above, the present invention also proposes a kind of network communication method, may further comprise the steps:
A, wireless sensor network image data also send;
B, trunking communication network receive described data and forward it to destination address.
Wherein, also comprise b0 between described step a and the step b:
The data that described wireless sensor network sends are also resolved in b0, reception, extract the data after the described parsing and are the packet that meets described trunking communication network transmission format with this data encapsulation, are sent to described trunking communication network then;
And the trunking communication network is used for receiving the data after b0 encapsulates and forwards it to destination address among the step b.
The present invention is owing to be provided with format conversion apparatus between wireless sensor network and trunking communication network, and then with two organic combinations of network, brought into play the advantage of the long-distance transmissions of trunking communication network, the transmission range that has prolonged wireless sensor network.
Description of drawings
Fig. 1 is the schematic network structure of an embodiment of two grade network of the present invention;
Fig. 2 is the structured flowchart of an embodiment of format conversion apparatus of the present invention;
Fig. 3 is the FB(flow block) of an embodiment of the data handling procedure of form converter device of the present invention;
Fig. 4 is the data flowchart of another embodiment of two grade network of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with accompanying drawing.
At first, briefly set forth principle of the present invention.The present invention so just can bring into play the advantage of the long transmission distance of trunking communication network by access set group communication network on the basis of wireless sensor network, has enlarged the transmission range of wireless sensor network.
With reference to figure 1, illustrate the schematic network structure of an embodiment of two grade network of the present invention.As shown in the figure, comprise the two large divisions: a part is the wireless sensor network 1 as the first order, and another part is as partial trunking communication network 2, and these two parts connect intercommunication by format conversion apparatus 11.
Described wireless sensor network 1 comprises terminal node (among the figure shown in the circle) and coordinator node (among the figure shown in the square frame); Described terminal node has network construction, data passes function, also finishes the work of data acquisition simultaneously, and it comes inquiry to send with communicating by letter of coordinator node by coordinator node timer access terminal node; If terminal node has important data to transmit, also can directly call described coordinator node and finish transfer of data.
Described coordinator node is as the global function node, and it not only has the function of networking, also has a routing function, communicating by letter between each terminal node of being responsible for wireless sensor network 1 and the trunking communication network 2; The data that described terminal node is sent to described coordinator node all are forwarded to described trunking communication network again through this coordinator node, and same, this process also is reversible.
In the present embodiment, only enumerated the situation that comprises one group of wireless sensor network, only needed to add as required getting final product in actual use.In addition, be to be example in the present embodiment with star-like wireless sensor network, it can also adopt other topological structure, for example bunch shape topological structure or fully connected topology or the like.
Described trunking communication network 2 comprises front end data terminal 12, front end base station 13, data gateway 14, data server 15, base station, rear end 16 and Back end data terminal 17.
Described front end data terminal 12 is meant the data terminal that is positioned at described wireless sensor network 1 side, and described Back end data terminal 17 is meant the data terminal that is positioned at described back-end network/equipment side; In like manner, the definition of described front end base station 13 and base station, rear end 16 also roughly the same.
Wherein, described front end data terminal 12 is used for receiving the data of conversion equipment 11 from form, and the data that receive are sent to front end base station 13 by Radio Link, and is forwarded to data gateway 14 by front end base station 13; This data gateway 14 is according to the destination address (back-end network/equipment for being connected with data terminal 17 in the present embodiment) of the data that receive, send it to Back end data terminal 17 by base station, rear end 16, and finally be sent to the described back-end network/equipment of rear end by this Back end data terminal 17.
All adopt wired connection between described front end base station 13 and base station, rear end 16 and the described data gateway 14, then adopt wireless connections between end group station 16 and the Back end data terminal 17.
Described back-end network/equipment is meant equipment/network of need handling the data that described wireless sensor network 1 collected, for example to the data that described wireless sensor network 1 collected classify, analysis and storage etc.Simultaneously, described back-end network/equipment also can be sent to control signal the terminal node of described wireless sensor network 1 by two grade network shown in Figure 1.
Wherein, described data gateway 14 also connects data server 15.This data server 15 is used for the packet via described data gateway 14 routing forwarding is carried out the storage of initial data (data before the format conversion), with the usefulness as data checks; In addition, it also is used for the data of being transmitted by described data gateway 14 are carried out data type identification, adopts respective channels to send by described data gateway 14 respectively after the identification.For example, the data that data gateway 14 receives are identified as speech data by data server 15, and then described data gateway 14 just uses voice channel to send, if be identified as the short message data, then adopts data channel to send.
Described format conversion apparatus 11 is used to resolve from the data of described wireless sensor network 1 and is converted into the form that described trunking communication network 2 is supported; Same, also will resolve from the packet of described trunking communication network 2, and be converted to described wireless sensor network 1 can recognition data.Coordinator node wired connection in this format conversion apparatus 11 and the described wireless sensor network 1, also with described trunking communication network 2 in data terminal 12 wired connections.Move the agreement of described two kinds of networks in this format conversion apparatus 11 simultaneously, to realize parsing and conversion to data.An embodiment of the concrete structure of described format conversion apparatus 11 can describe with reference to figure 2 and related text.
In the present embodiment, the communication between described wireless sensor network and the trunking communication network is two-way.Is by the inverse process of wireless sensor network to the communication the trunking communication network by the trunking communication network to the communication of wireless sensor network direction, is not described in detail at this.
Need to prove that described trunking communication network 2 specifically can adopt existing colony network, for example GSM network, cdma network perhaps also can adopt the TETRA network.
With reference to figure 2, illustrate the structured flowchart of an embodiment of format conversion apparatus of the present invention.As shown in the figure, comprise processor 111, flash memory 112, internal memory 113, debug port 114, expansion bus 115, usb 1 16, RS232 interface 117 and display interface 118.
Wherein, operation described wireless sensor network 1 and 2 two kinds of agreements of trunking communication network in the processor 111 are with to carrying out format conversion from described two kinds of network datas, to be converted to the data format of objective network.
Described flash memory 112 is used to deposit the program of described format conversion apparatus operation and various original and intermediate data etc.; Described internal memory 113 is as the address space of working procedure.Described debug port 114 is used for described format conversion apparatus 11 is debugged, and for example writing etc. of program preferably can be the jtag test port.
Described expansion bus 115 by described processor 111 Control work sequential, is modeled as PEI (Peripheral Equipment Interface, the peripheral interface) interface that is connected communication with the data terminal 12 in the described trunking communication network 2.For example, be modeled as the serial bus interface of communicating by letter or parallel interface etc. with described data terminal 12.
Described RS232 interface 117 links to each other with coordinator node in the described wireless sensor network 1, to receive serial data from sensor network, and resolve by 111 pairs of described serial datas of described processor, obtain wherein address date and useful data, and then assemble packing according to the communication format of described trunking communication network 2 again by 111 pairs of useful datas that obtain of described processor and address date, the interface of being simulated by described expansion bus 115 is sent in the described trunking communication network 2 at last.
Equally, after the infomational message data of trunking communication network 2 are sent by described expansion bus 115,111 pairs of described infomational message data of described processor are resolved, extract wherein useful data and address date, and with this useful data and address date again according to the form of serial data, be sent in the wireless sensor network 1 by described RS232 interface 117.
Described display interface 118 is used to connect outside display device, showing the running status of described format conversion apparatus 11, and shows the debugging mode use during for debug port 114 debugging.It act as the output shows signal, and described external display device shows according to video data in the described shows signal and control data.
With reference to figure 3, illustrate the FB(flow block) of an embodiment of the data handling procedure of form converter device of the present invention.As shown in the figure, can be simultaneously with reference to figure 2 and text description thereof:
Carry out the initialization load driver after the form converter device powers on, receive from the data sending request of wireless sensor network 1 or trunking communication network 2 afterwards and receive data; The data format of objective network is resolved and be converted to the log-on data format conversion to receiving the data of coming; After conversion finishes, send request to objective network, request sends has changed the data that finish, treat that objective network accepts request after, the data that described conversion is finished are sent to objective network and wait for the request of transfer of data next time.
It should be noted that, in a preferred embodiment of the invention, described wireless sensor network adopts the ZIGBEE network, and described trunking communication network using TETRA network, because these two kinds of network standards are open, thereby its structure and networking mode, and the detailed content of internal agreement etc. is no longer further set forth.
In addition; Fig. 1 has only set forth a kind of simple network configuration of enforcement the present invention; those of ordinary skills can not spend quantity and the corresponding data terminal that creative work increases wireless sensor network on this basis fully, and this is equally also in protection scope of the present invention.For example:
On basis embodiment illustrated in fig. 1, increase by two wireless sensor networks again; Increase the data terminal of two trunking communication networks simultaneously, two data terminals of increase are connected with two wireless sensor networks of described increase respectively, and the wireless sensor network of described increase and the function of data terminal are all constant.When being necessary, the data terminal of supporting when the base station reaches in limited time, can realize dilatation by the quantity that increases the base station, and this also belongs to protection scope of the present invention.
In another embodiment of a kind of two grade network of the present invention, with respect to embodiment illustrated in fig. 1, unformatted conversion equipment between described wireless sensor network and the trunking communication network.Its network communication and transmission process prescription is as follows:
With reference to figure 4, at first the total that terminal node is gathered of wireless sensor network 41 is reportedly transported to its coordinator node, and this coordinator node is sent to described data terminal 42 by serial ports with described data;
Wherein, wireless sensor network 41 comprises target address information expressly by the Frame that serial ports sent, and this target address information is positioned at the head or the afterbody of described Frame, and it need not to resolve and just can directly read;
After described data terminal 42 receives Frame from serial ports, frame is not resolved, but according to the route of the target address information of described plaintext, directly it is encapsulated as the trunking communication output packet that destination address is described plaintext address information, and be sent to base station 43 by Radio Link;
The data from data terminal 42 that receive by cable butting base station 43 are transmitted, and are sent to data gateway 43;
After data gateway 43 receives packet from base station 43, transfer to connected data server and handle, and packet is sent to base station 44 according to target address information;
The packet from data gateway 43 that 44 pairs of base stations receive is forwarded to described data terminal 46;
After data terminal 46 receives described packet, just send it to other network/equipment 47 by serial interface cable;
Described other network/equipment 47 is resolved it after receiving trunking communication output packet from data terminal 46, obtains the data that wireless sensor network is gathered.
Wherein, the processing procedure of data server can no longer repeat at this with reference to associated description embodiment illustrated in fig. 1.
The foregoing description is resolved by the network/equipment of the data of using wireless sensor network to collect owing to the problem with format conversion has been placed on the rear end, obtains useful data.To a certain extent, reduce the communication complexity between wireless sensor network and the trunking communication network, improved network reliability.
In another embodiment of a kind of two grade network of the present invention, with respect to embodiment illustrated in fig. 4, described trunking communication network only comprises the base station and the data terminal of described data gateway and described wireless sensor network side.Its network service process is:
Wireless sensor network (being specially its coordinator node) sends Frame by serial ports;
After the data terminal of described trunking communication network received Frame from serial ports, it was not resolved to frame, directly it is encapsulated as the trunking communication output packet, and is sent to the base station by Radio Link;
The data from described data terminal that receive by cable butting described base station are transmitted, and are sent to data gateway;
After described data gateway receives packet from described base station, transfer to connected data server and handle;
Described data server carries out storage backup to the data from described data gateway.
In the above-described embodiments, data from wireless sensor network are not carried out any processing, directly are encapsulated as the trunking communication output packet, and do not need route, all be sent to data gateway, the information that sends to data gateway carried out storage backup by described data server.
Described wireless sensor network can be ZIGBEE wireless sensor network, Ad-hoc wireless sensor network etc.; Described trunking communication network can be a TETRA network etc.
In addition, need to prove that the method for network service can for avoiding repeating to set forth, only be made brief description below according to obtaining in the associated description to Fig. 1, Fig. 3 and Fig. 4 among the present invention:
The situation of format conversion apparatus at first, is described.Terminal node in the wireless sensor network is gathered external data, data after the collection are sent to its coordinator node by wireless sensor network, this coordinator node is sent to format conversion apparatus by serial ports with the data of described collection, format conversion apparatus will obtain useful data and destination address from the data frame analyzing of serial ports, and according to this useful data and destination address assembling meets the packet of trunking communication network transmission format, assembling is sent to the data terminal of trunking communication network after finishing, afterwards just by described trunking communication network with described data packet transmission described destination address extremely;
Secondly, the situation of unformatted conversion equipment is described.Equally, terminal node in the wireless sensor network is gathered external data, data after the collection are sent to its coordinator node by wireless sensor network, this coordinator node directly is sent to the described data that collect the data terminal of trunking communication network, this data terminal is left intact after receiving data, be sent to data server after being bagged directly into the trunking communication output packet, to store;
And another kind of situation is, when described coordinator node transmits data to described data terminal, frame head or postamble in data add expressly destination address, when data terminal receives these data, send it to the destination address end directly according to destination address spanning set group communication output packet, and by this trunking communication network by route to destination address.
Above-mentioned description only can be with reference to the relevant elaboration among the embodiment above for briefly bright, concrete process.
Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (5)
1. a two grade network is characterized in that, comprises wireless sensor network and trunking communication network; Described wireless sensor network is used for image data, and with this transfer of data to described trunking communication network; Described trunking communication network is back-end network/equipment in order to transfer of data to the destination address that described wireless sensor network is gathered;
Described trunking communication network comprises front end data terminal, front end base station, data gateway, data server, base station, rear end and Back end data terminal; Described front end data terminal is meant the data terminal that is positioned at described wireless sensor network side; And described Back end data terminal is meant the data terminal that is positioned at described back-end network/equipment side; Described front end base station connects described front end data terminal and described data gateway, realizes the communication between described front end data terminal and the described data gateway; Base station, described rear end connects described Back end data terminal and described data gateway, realizes communicating by letter between described Back end data terminal and the described data gateway; Described data server links to each other with described data gateway, in order to the data of storage via described data gateway;
Wireless sensor network comprises target address information expressly by the Frame that serial ports sent, and this target address information is positioned at the head or the afterbody of described Frame; After described front end data terminal receives Frame from serial ports, frame is not resolved, and according to the route of the target address information of described plaintext, directly it is encapsulated as the trunking communication output packet that destination address is described plaintext address information, and be sent to the front end base station by Radio Link.
2. two grade network according to claim 1 is characterized in that, and, described trunking communication network also be used for from the transfer of data of back-end network/equipment to described wireless sensor network.
3. two grade network according to claim 1, it is characterized in that, described wireless sensor network is the ZIGBEE network, it comprises coordinator node and terminal node, to described coordinator node, described coordinator node is sent to described front end data terminal by serial ports with described data to described terminal node with the transfer of data of gathering.
4. two grade network according to claim 1 is characterized in that, described data server also is used for the type via the data of described data gateway is discerned; And described data gateway adopts corresponding channel transceiver data according to the recognition result of described data server.
5. a network communication method is characterized in that, may further comprise the steps:
A, wireless sensor network image data also send;
B, trunking communication network receive described data and forward it to destination address is back-end network/equipment;
Wherein, described trunking communication network comprises front end data terminal, front end base station, data gateway, data server, base station, rear end and Back end data terminal; Described front end data terminal is meant the data terminal that is positioned at described wireless sensor network side; And described Back end data terminal is meant the data terminal that is positioned at described back-end network/equipment side; Described front end base station connects described front end data terminal and described data gateway, realizes the communication between described front end data terminal and the described data gateway; Base station, described rear end connects described Back end data terminal and described data gateway, realizes communicating by letter between described Back end data terminal and the described data gateway; Described data server links to each other with described data gateway, in order to the data of storage via described data gateway;
Wireless sensor network comprises target address information expressly by the Frame that serial ports sent, and this target address information is positioned at the head or the afterbody of described Frame; After described front end data terminal receives Frame from serial ports, frame is not resolved, and according to the route of the target address information of described plaintext, directly it is encapsulated as the trunking communication output packet that destination address is described plaintext address information, and be sent to the front end base station by Radio Link.
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| JP5631406B2 (en) | 2009-11-03 | 2014-11-26 | アルカテル−ルーセント | Method and device for aggregating multiple service data from machine terminal equipment |
| CN102647211A (en) * | 2011-02-22 | 2012-08-22 | 中兴通讯股份有限公司 | Mobile terminal for realizing wireless clustering function by utilizing Zigbee technology |
| CN102781026A (en) * | 2011-05-10 | 2012-11-14 | 惠州紫旭科技有限公司 | Wireless transparent data transmission method |
| CN104995610B (en) * | 2013-03-15 | 2018-11-16 | 英特尔公司 | Device, system, method, storage medium and computer system for being communicated with the local component for calculating equipment |
| CN104104568B (en) * | 2013-04-02 | 2018-04-27 | 上海通用汽车有限公司 | For the method, apparatus and system from communication bus gathered data |
| CN104092310B (en) * | 2014-04-21 | 2017-07-21 | 北京能源通电气技术有限公司 | A kind of intelligent power distribution monitoring and energy management system backstage |
| CN105978798A (en) * | 2016-06-29 | 2016-09-28 | 深圳中兴网信科技有限公司 | Message encryption transmission method, terminal and server |
| CN110426728A (en) * | 2019-08-26 | 2019-11-08 | 重庆建安仪器有限责任公司 | Radiation monitoring system and method |
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