CN203166970U - Hybrid topology network ultrashort wave remote data transmission system - Google Patents
Hybrid topology network ultrashort wave remote data transmission system Download PDFInfo
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- CN203166970U CN203166970U CN201320149821.2U CN201320149821U CN203166970U CN 203166970 U CN203166970 U CN 203166970U CN 201320149821 U CN201320149821 U CN 201320149821U CN 203166970 U CN203166970 U CN 203166970U
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Abstract
The utility model discloses a hybrid topology network ultrashort wave remote data transmission system, which comprises at least one main station facility and a plurality of slave station facilities. The main station facility and the slave station facilities achieve communication connection by adopting radio waves as a channel medium. The signal coverage area of the main station facility is a master-slave type core network area. The area beyond the signal coverage area of the main station facility is a distributed peripheral network area. At least one of the slave station facilities is located inside the core network area. At least one slave station facility in the core network area is a relay station. By adopting a new communication mode in a simplex frequency point and introducing a peripheral network routing tree accessing technology, the hybrid topology network ultrashort wave remote data transmission system solves the problem that a minority of slave stations suffer insufficient signal coverage in the peripheral network area. The problem is further solved with a low cost.
Description
Technical field
The utility model belongs to automatic control and management wireless data transmission group net technical field, relates in particular to a kind of mixed topology network ultra-short wave remote data transmission system.
Background technology
SCADA (Supervisory Control And Data Acquisition) system, be data acquisition and supervisor control, be scattered control system (DCS, distributed control systems) and the Automatic monitoring systems based on computer.The SCADA system comprises main website equipment and a plurality of from station equipment.Main website equipment and respectively from directly communicating by Ethernet or wireless network between the station equipment.Main website equipment is collected the business datum from station equipment, thereby the working condition from station equipment is monitored.SCADA system applies field is very wide, can be applied to the data acquisition and supervision control and process control etc. in fields such as electric power, metallurgy, oil, chemical industry.The SCADA system accounts for critical role in telecontrol system, can the operational outfit at scene be monitored and control, to realize every functions such as data acquisition, equipment control, measurement, parameter adjusting and various types of signal warning.At present, 230M duplex frequency and single power frequency point that the SCADA system of industries such as electric power, waterpower, oil generally uses State Radio Regulatory Commission to distribute carry out wireless communication network, and its transfer of data is real-time, accurate, safety.But day by day increase along with from station equipment (terminal) quantity being installed in the SCADA system, become serious day by day from the access problem of the edge termination of main website equipment away from.
Specifically, influenced by the wave radiation propagation characteristic in the traditional master-slave mode ultrashort wave SCADA system, the system communication overlay area is the circular geographic area in the center of circle often with the central master station.And in the practical application, the SCADA system coverage area that with the administrative division is principle of subsidiarity is often also non-circular, has very big randomness from the position distribution of station equipment, the distance from main website equipment from station equipment that has away from, not within the coverage of main website equipment, thereby there is the problem that can't cover all edge terminations.In this case, if in order to satisfy all edge terminations of covering more central master station is set, each central master station adopt different communication frequencys with separately carry out communication from station equipment, caused taking too much frequency resource, newly-built central master station will be subjected to the restriction of available frequency resources.On the other hand, if the slave station negligible amounts in edge network zone, the cost of building central master station is higher, thus for the cost performance of minority slave station construction central master station on the low side.
The utility model content
The utility model has overcome and exists edge network zone slave station device signal spreadability not enough and for defectives such as edge network zone slave station equipment construction central station cost performance are on the low side in the prior art, has proposed a kind of mixed topology network remote ultrashort wave transmission system.
The utility model proposes a kind of mixed topology network ultra-short wave remote data transmission system, comprise at least one main website equipment and a plurality of from station equipment; Described main website equipment and describedly include wireless signal transmitting device and wireless signal receiving system from station equipment, described main website equipment and described from being that channel medium realizes communicating to connect with the radio wave between the station equipment;
The signal coverage areas of described main website equipment is the core network zone, is the edge network zone beyond the signal coverage areas of described main website equipment, and described a plurality ofly have at least one to be arranged in described core network zone from station equipment from station equipment; In the described core network zone at least one is relay station from station equipment.
Wherein, the quantity from station equipment in the described core network zone is 10
2～10
3The order of magnitude.
Wherein, the equipment timesharing of described main website is connected with slave station devices communicating in each described core network zone in turn.
Wherein, adopt the radio wave of same frequency to realize communicating to connect from station equipment in described main website equipment and the described core network zone.
Wherein, the slave station quantity in the described edge network zone is that several are to the dozens of order of magnitude.
Wherein, the radio wave from multiplexing by unifrequency between station equipment and the described relay station or ISM band in the described edge network zone is realized communicating to connect.
Connecting from the realization of station equipment employing wireless self-organization network in the utility model edge network zone.Have the dynamic of height in the edge network of the present utility model zone from the topological structure of station equipment and relay station, take the distributed control of communication mode and the network of multi-hop between node.
The utility model low cost has solved the problem that edge network area part slave station can't be capped in traditional master-slave network.
Description of drawings
Fig. 1 is the structure chart of the utility model mixed topology network ultra-short wave remote data transmission system.
Embodiment
In conjunction with following specific embodiments and the drawings, the utility model is described in further detail.Implement process of the present utility model, condition, experimental technique etc., except the following content of mentioning specially, be universal knowledege and the common practise of this area, the utility model is not particularly limited content.
As shown in Figure 1, mixed topology network ultra-short wave remote data transmission system of the present utility model comprises at least one main website equipment and a plurality of from station equipment.The signal coverage areas of main website equipment is the core network zone, and the zone outside its coverage is the edge network zone.Data transmission system in the utility model is to be transmission medium with the radio wave, main website equipment with include wireless signal transmitting device and wireless signal receiving system from station equipment, with ultrashort wave radio station realization main website equipment with from communicating by letter between the station equipment.Be provided with a plurality ofly from station equipment in the core network zone, wherein have at least one to be connected with slave station devices communicating the edge network zone as relay station from station equipment.
Main website equipment is connected with a plurality of slave station devices communicatings in the core network zone, and it is 10 that each main website equipment has direct-connected slave station number of devices
2～10
3Magnitude.In the utility model, because the ultra-short wave radio transmission range is limited, usually in the 20-30 kilometer range, the single-frequency frequency in core network zone should adopt the special-purpose dominant frequency of the ownership industry, and because each relevant industries can be few and discrete with frequency, the frequency resource anxiety, for guaranteeing the more eurypalynous business of transmission rate support of capturing service, main website equipment communicates to connect with adopt the mode of identical networking from station equipment in the core network zone in the utility model, and main website equipment and from adopting tdma (TDMA between the station equipment, Time Division Multiple Access) realizes data transmit-receive, be that main website equipment will mail to respectively from the data of the station equipment time of carrying out and divide and transmit at a frequency, from station equipment receive when monitoring this frequency point data that the data in the corresponding moment separately just can obtain corresponding data and with self business datum by radio wave transmissions to main website equipment, thereby realize that main website equipment timesharing is connected with communicating from station equipment in turn, reaches the main website device polling, effect from station equipment timesharing use.Further, also disassemble existing duplexing frequency in core network of the present utility model zone is that two half-duplex frequencies are realized communication, promoting frequency utilization efficient, and reduces from the station equipment configuration of receiving and sending messages.
Because the propagating characteristic of electromagnetic signal, the signal cover of main website equipment is generally a border circular areas.And because randomness and uncertainty on the geographic factor, the address of communication node distributes and is the scrambling characteristics.The part edge network area that does not cover as yet for the signal of main website equipment, if disperse and negligible amounts from station equipment in this edge network zone, then can utilize part in the main website device signal area of coverage (being the core network zone) from station equipment as relay station, by the data relaying of the in the future autonomous station equipment of this relay station be transmitted in the above-mentioned edge network zone from station equipment.Simultaneously, main website receives and the business datum from station equipment of monitoring from above-mentioned edge network zone by this relay station.
From station equipment, the quantity from station equipment in the edge network zone is that several are to the dozens of order of magnitude to the edge network region memory some.Relay station in the edge network zone with adopt wireless self-organization network to be connected from station equipment.Wireless self-organization network is divided into planar structure and hierarchy.The utility model adopts the wireless self-organization network of hierarchy in the edge network zone.The wireless self-organization network of hierarchy is divided into a plurality of bunches with wireless network, and each bunch is by a bunch of head and a plurality of bunches of member compositions, and wherein bunch head is relay station, bunch member be by relaying from station equipment.The utility model according in environmental condition and the edge network zone from the quantity of station equipment, answer the formula routing Design earlier in the employing of edge network intra-zone, each stores and safeguards the tree structure routing table of one or more storage routing iinformations in advance from station equipment, embody the up-to-date routing iinformation of all edge slave stations in the network.The edge network zone utilizes the tree-like roadbed topological structure of active maintenance, has effectively avoided the big effect of route that caused by route loop, and compares with complete reciprocity wireless self-organization network, and networking and routing cost reduce, and have expanded range of application.When communicating by letter, can directly search the tree structure routing table from station equipment, not need route discovery, have the little advantage of transmission grouping time-delay.The tree structure routing table that generates be stored in relay station and by relaying from station equipment and dynamically upgraded.
Because traffic carrying capacity, the radio station power in edge network zone have obvious reduction than main website equipment, so frequency is selected more flexible.Can improve the frequency utilization ratio in single power frequency point cellular re-use mode by different regions; If close together between private network frequency insufficient total amount or the region, when there is performance difficulty in the frequency cellular re-use, respectively also can select for use the close ISM band of frequency as the communication frequency from station equipment.Respectively work in the peer-to-peer network mode from station equipment, finish convergence with tree structure and report.
Because in the utility model, relay station not only need to safeguard and by relaying from the routing table between the station equipment, also need to safeguard from station equipment with bunch relation.There are two operating frequencies in each relay station, one of them operating frequency is the main frequency of using in the core network zone of relay station monitoring, main website equipment sends with tdma on frequency this master and calls the survey signal together, and relay station is called the survey signal this master together with what frequency monitoring main website equipment was sent; The special-purpose frequency that another operating frequency adopts when being each slave station devices communicating in relay station and the edge network zone is realized communicating to connect, i.e. above-mentioned ISM frequency or cellular re-use frequency.Preferably, owing to do not adopt tdma in the edge network zone, bump easily from transmission data between the station equipment, cause relay station can't intactly receive from respectively from the business datum of station equipment.So the utility model adopts CSMA/CA class competition employment mechanism to upload business datum in the frequency of edge network, avoids channel resource to use collision.
Further, because the utility model uses simplex station, do not wait for during the slave station devices communicating in relay station and the edge network zone in the case master that main website equipment uses with frequency on, therefore might miss from main website, issue self or by the information from station equipment of relaying.At this problem, main website equipment sends in the utility model calls together and surveys signal and adopt the Frame serial number, calls the survey signal from station equipment together according to numbering whether to judge whether continuously to miss in core network zone and the edge network zone.If certain frame data is numbered when discontinuous, show some data has taken place to miss, then upload time slot in competition from station equipment and submit to main website equipment and retransmit application.
Further, if when certain is from the business datum of station equipment in the equipment temporary needs system of main website, then main website equipment sends this temporarily and calls the survey signal together from station equipment to all from station equipment.If should be positioned at the direct coverage of main website from station equipment, then this slave station directly responds to call together to survey and requires and upload this website business datum; If this slave station is positioned at certain edge network zone, corresponding relay station can identify to be measured whether being positioned at from station equipment self provides the edge network of relay services zone, and calls measurement information by trunking mechanism together to the slave station device forwards to be measured in the edge network zone.After receiving request from station equipment accordingly in the edge network zone, according to the routing table of storing in advance this website business datum is sent to relay station, and be forwarded to main website equipment by relay station, after main website finished verification and affirmation, communication was finished.
Further, the utility model can also be by the edge network zone take booking-mechanism thresholding to be set constantly (for example from station equipment, per 5 minutes), on one's own initiative business datum is sent in the relay station according to routing table constantly at thresholding from station equipment and preserves, when relay station received calling together of main website equipment and surveys signal, relay station was sent to main website equipment with the business datum of our station business datum and preservation according to the time slot unification of time division multiple access.
Protection content of the present utility model is not limited to above embodiment.Under the spirit and scope that do not deviate from the utility model design, variation and advantage that those skilled in the art can expect all are included in the utility model, and are protection range with the appending claims.
Claims (6)
1. a mixed topology network ultra-short wave remote data transmission system is characterized in that, comprises at least one main website equipment and a plurality of from station equipment; Described main website equipment and describedly include wireless signal transmitting device and wireless signal receiving system from station equipment, described main website equipment and described from being that channel medium realizes communicating to connect with the radio wave between the station equipment;
The signal coverage areas of described main website equipment is the core network zone, is the edge network zone beyond the signal coverage areas of described main website equipment, and described a plurality ofly have at least one to be arranged in described core network zone from station equipment from station equipment; In the described core network zone at least one is relay station from station equipment.
2. mixed topology network ultra-short wave remote data transmission system as claimed in claim 1 is characterized in that, the quantity from station equipment in the described core network zone is 10
2～10
3The order of magnitude.
3. mixed topology network ultra-short wave remote data transmission system as claimed in claim 1 is characterized in that, the equipment timesharing of described main website is connected with slave station devices communicating in each described core network zone in turn.
4. mixed topology network ultra-short wave remote data transmission system as claimed in claim 1 is characterized in that, adopts the radio wave of same frequency to realize communicating to connect from station equipment in described main website equipment and the described core network zone.
5. mixed topology network ultra-short wave remote data transmission system as claimed in claim 1 is characterized in that, the slave station quantity in the described edge network zone is that several are to the dozens of order of magnitude.
6. mixed topology network ultra-short wave remote data transmission system as claimed in claim 1 is characterized in that, the radio wave from multiplexing by unifrequency between station equipment and the described relay station or ISM band in the described edge network zone is realized communicating to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320149821.2U CN203166970U (en) | 2013-03-28 | 2013-03-28 | Hybrid topology network ultrashort wave remote data transmission system |
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|---|---|---|---|
| CN201320149821.2U CN203166970U (en) | 2013-03-28 | 2013-03-28 | Hybrid topology network ultrashort wave remote data transmission system |
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| CN203166970U true CN203166970U (en) | 2013-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792610A (en) * | 2016-12-19 | 2017-05-31 | 中国人民解放军国防信息学院 | A kind of shortwave wireless cooperation method |
| CN108235156A (en) * | 2017-12-29 | 2018-06-29 | 成都天奥信息科技有限公司 | A kind of wireless communication control system based on V/UHF channels |
-
2013
- 2013-03-28 CN CN201320149821.2U patent/CN203166970U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792610A (en) * | 2016-12-19 | 2017-05-31 | 中国人民解放军国防信息学院 | A kind of shortwave wireless cooperation method |
| CN108235156A (en) * | 2017-12-29 | 2018-06-29 | 成都天奥信息科技有限公司 | A kind of wireless communication control system based on V/UHF channels |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140328 |