CN103200705A - Two-stage wireless network used for monitoring system in water treatment plant - Google Patents
Two-stage wireless network used for monitoring system in water treatment plant Download PDFInfo
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- CN103200705A CN103200705A CN2013100577387A CN201310057738A CN103200705A CN 103200705 A CN103200705 A CN 103200705A CN 2013100577387 A CN2013100577387 A CN 2013100577387A CN 201310057738 A CN201310057738 A CN 201310057738A CN 103200705 A CN103200705 A CN 103200705A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Provided is a two-stage layering wireless communication network used for a water treatment plant. Monitoring substations of an automatic water treatment control system are connected in a wireless communication mode. According to space distribution of process links of water treatment, logic relation characteristics and data communication bandwidth requirements, wireless communication nodes are distributed in a clustered shape, and communication transmission is organized to be of a two-stage and layering structure. A secondary communication subdomain composed of wireless sensor nodes is used for covering each process treatment factory in the water treatment plant, communication among the nodes is achieved through ZigBee, and a self-organized and self-adaptation communication route mechanism is achieved. Communication among gateways constitutes a primary communication domain of a system, the communication bandwidth between the nodes is large, the distance is far, and MESH network communication based on 802.11 is adopted. Therefore, the wireless communication structure fully makes used of control characteristics of water treatment process, the problems of reliability of wiring and building and maintenance cost are solved, and the two-stage layering wireless communication network has the advantages of being good in system flexibility and expandability.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of twin-stage wireless network for water treatment plant's supervisory control system.
Background technology
At present, bus mode is generally adopted in the transmission of the signal of sewage treatment plant's control system, need construct to field wiring, inconvenience is installed, and because chemical corrosion, aging circuit easily cause bus short circuit or open circuit, system reliability is poor, maintenance is inconvenient, has increased the maintenance cost of system; And some exceedingly odious operational environment is difficult to wiring, then can't implement monitoring.In addition, the water treatment system spatial extent is big, and is with a varied topography, and number of nodes is many, and communication data source distribution is unbalanced.Directly use the civilian starlike wireless network of IEEE802.11, can be because communication node quantity be huge cause shortcomings such as channel congestion, electromagnetic pollution are big and can't be used for water treatment industry control environment; And use the low-power wireless sensing network based on Zigbee only to be applicable to the inter-node communication of interior dense distribution among a small circle fully, then can't satisfy the demand of communication distance and bandwidth for the communication between water treatment plant's middle distance a plurality of PROCESS FOR TREATMENT links far away.
Therefore, at the specific demand that the water treatment plant uses, need a kind ofly can take into account long-distance transmissions, big number of nodes cover, high reliability industry wireless network system.
Summary of the invention
At the problems referred to above, the invention discloses a kind of twin-stage wireless network for water treatment plant's supervisory control system, adopt wireless mode to communicate between each monitoring sub-station of water treatment automatic control system, communication node requires to be bunch shape according to water treatment technology data acquisition and control and distributes, with wireless transmission be organized into two-stage, hierarchical setting.
The present invention adopts following technology: a kind of twin-stage wireless network for water treatment plant's supervisory control system, comprise that the IEEE802.11 wireless network constitutes the two grade network subdomain of communicating by letter as one-level communication domain and a plurality of Zigbee networks, the node of one-level communication domain is the gateway of secondary communication subdomain, the node topology structure of one-level communication domain is mesh network MESH, communicates by letter according to data multi-hop, multipath and self-organizing; The node wireless signal transmission power of described one-level communication domain is at 200mW-500mW; Secondary communication subdomain comprises a plurality of wireless sensor nodes that are the data acquisition/control in bunch water treatment technology link of shape distribution, by zigbee communication, has self-organizing, adaptive communication routing mechanism between the wireless sensor node in each bunch; The sensing node of secondary communication subdomain to subdomain gateway place, is transmitted convergence by the one-level communication domain; Secondary communicator domain node uses transmitting power 10mW-50mW, traffic rate 100kbps-250kbps.
The present invention also has following feature:
1, aforesaid wireless sensor node is a bunch shape distribution according to water treatment technology data acquisition and demand for control, the data acquisition that each water treatment technology link is relevant and the wireless sensor node of control constitute a secondary communication domain, and the secondary communication domain is used for covering each PROCESS FOR TREATMENT factory building of water factory or data acquisition or the control inter-node communication of each PROCESS FOR TREATMENT link in water treatment technology.
2, aforesaid one-level communication domain be used for to realize that water treatment technology strides the communication between factory building, the remote a plurality of water treatment technology links that distribute.
Water treatment plant's supervisory control system communication plan that the present invention realizes can be saved cost and the workload of the wired interconnected wiring of tradition, need not to consider circuit corrosion problem of aging, can obtain the reliability and stability higher than wired mode, and reduced whole construction and maintenance cost, and have extremely strong adaptability and extensibility.The telecommunications architecture of two-stage layering has reasonably distributed transmitting power, the communication range of node, has avoided the communication bandwidth that channel is fought for, the phase mutual interference causes between huge quantity node to reduce and integrity problem, has also reduced the total system cost simultaneously.Communication node distributes and has tangible characteristics in the water treatment applications, though whole span is big, distance, but communication node distributes by bunch shape according to technological process usually, a process procedure place concentrates a plurality of nodes, and the Zigbee system of secondary communication domain of the present invention can guarantee the reliable communication of local nodes with lower cost and transmitting power.The characteristics big at communication range in the water treatment applications, that distributing position is irregular, with a varied topography, the backbone network of one-level communication domain adopts 802.11 radio communications based on the MESH structure, the situation that can adapt to various complex-terrains and electromagnetic shielding obstacle with multipath self-organizing route, and can guarantee communication distance with stronger transmitting power.
Description of drawings
Fig. 1 is twin-stage cordless communication network system schematic diagram of the present invention;
Fig. 2 is bipolar radio network netgate schematic diagram.
Embodiment
The invention discloses a kind of cordless communication network of the two-stage layering for the water treatment plant, will adopt the mode of radio communication connect between each monitoring sub-station of water treatment automatic control system.The present invention is according to spatial distribution, logical relation characteristics and the data communication bandwidth requirement of each process procedure of water treatment, wireless communication node is distributed by bunch shape, and with communications be organized into two-stage, hierarchical setting.The secondary communication subdomain that wireless sensor node constitutes for each the PROCESS FOR TREATMENT factory building that covers water factory, by ZigBee communication, has self-organizing, adaptive communication routing mechanism between node; Communication has constituted the one-level communication domain of system between gateway, inter-node communication bandwidth height, and distance is far away, adopts the MESH network service based on 802.11.Telecommunications architecture has taken full advantage of the control characteristics of water treatment technology like this, has not only solved reliability, construction and the maintenance cost problem of wiring, also has advantages such as good system flexibility and extensibility.
Embodiment 1:
A kind of twin-stage wireless network for water treatment plant's supervisory control system, comprise that the IEEE802.11 wireless network constitutes the two grade network subdomain of communicating by letter as one-level communication domain and a plurality of Zigbee networks, the node of one-level communication domain is the gateway of secondary communication subdomain, the node topology structure of one-level communication domain is mesh network MESH, communicates by letter according to data multi-hop, multipath and self-organizing; The node wireless signal transmission power of described one-level communication domain is at 200mW-500mW; Secondary communication subdomain comprises a plurality of wireless sensor nodes that are the data acquisition/control in bunch water treatment technology link of shape distribution, by zigbee communication, has self-organizing, adaptive communication routing mechanism between the wireless sensor node in each bunch; The sensing node of secondary communication subdomain to subdomain gateway place, is transmitted convergence by the one-level communication domain; Secondary communicator domain node uses transmitting power 10mW-50mW, traffic rate 100kbps-250kbps.Described wireless sensor node is bunch shape according to water treatment technology data acquisition and demand for control and distributes, the data acquisition that each water treatment technology link is relevant and the wireless sensor node of control constitute a secondary communication domain, and the secondary communication domain is used for covering each PROCESS FOR TREATMENT factory building of water factory or data acquisition or the control inter-node communication of each PROCESS FOR TREATMENT link in water treatment technology.Described one-level communication domain be used for to realize that water treatment technology strides the communication between factory building, the remote a plurality of water treatment technology links that distribute.
Embodiment 2:
As shown in Figure 1, be the cordless communication network of the two-stage layering of water treatment of the present invention, described network comprises: one-level communication node 101 and one-level communicate to connect 102.One-level communication node 101 is called gateway node again, and communication has constituted the one-level communication domain of system between gateway node.One-level communication is the MESH network based on IEEE802.11.The one-level communication bandwidth requires to be about tens of MB/s, and the transmitting power of each node is in the 200mW-500mW magnitude, and euclidean distance between node pair is far away, about hundreds of rice-thousands of rice.According to the characteristics of demand of sewage disposal supervisory control system, the one-level communication node is used between the realization standdle carrier even strides remote, the big data quantity network service of plant area.
The sensing node of secondary communication subdomain to subdomain gateway place, is transmitted convergence by one-level communication as we can see from the figure.Therefore gateway node be the one-level communication domain with the secondary communication domain between form a connecting link related, not only belonged to one-level communication and but also belonged to the secondary communication domain.
Wherein gateway node be the one-level communication domain with the secondary communication domain between the hinge of communicating by letter and forming a connecting link.So gateway node as shown in Figure 2, says from hardware namely to comprise the IEEE802.11 communication module, comprises the Zigbee communication module again; From software, gateway node had both comprised IEEE802.11MESH software protocol stack, comprised the Zigbee protocol stack again, and the two is realized the forwarding of two communication domain data by relay software.
Claims (3)
1. twin-stage wireless network that is used for water treatment plant's supervisory control system, comprise that the IEEE802.11 wireless network constitutes the two grade network subdomain of communicating by letter as one-level communication domain and a plurality of Zigbee networks, it is characterized in that: the node of one-level communication domain is the gateway of secondary communication subdomain, the node topology structure of one-level communication domain is mesh network MESH, communicates by letter according to data multi-hop, multipath and self-organizing; The node wireless signal transmission power of described one-level communication domain is at 200mW-500mW; Secondary communication subdomain comprises a plurality of wireless sensor nodes that are the data acquisition/control in bunch water treatment technology link of shape distribution, by zigbee communication, has self-organizing, adaptive communication routing mechanism between the wireless sensor node in each bunch; The sensing node of secondary communication subdomain to subdomain gateway place, is transmitted convergence by the one-level communication domain; Secondary communicator domain node uses transmitting power 10mW-50mW, traffic rate 100kbps one 250kbps.
2. a kind of twin-stage wireless network for water treatment plant's supervisory control system according to claim 1, it is characterized in that: described wireless sensor node is bunch shape according to water treatment technology data acquisition and demand for control and distributes, the data acquisition that each water treatment technology link is relevant and the wireless sensor node of control constitute a secondary communication domain, and the secondary communication domain is used for covering each PROCESS FOR TREATMENT factory building of water factory or data acquisition or the control inter-node communication of each PROCESS FOR TREATMENT link in water treatment technology.
3. a kind of twin-stage wireless network for water treatment plant's supervisory control system according to claim 1 is characterized in that: described one-level communication domain is used for realizing that water treatment technology strides the communication between factory building, the remote a plurality of water treatment technology links that distribute.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301906A (en) * | 2014-11-07 | 2015-01-21 | 济南银澳科技有限公司 | Method for relay communication between gateways of wireless sensor network |
| CN112291732A (en) * | 2020-10-19 | 2021-01-29 | 中国科学院自动化研究所 | Environment monitoring system, method and device based on mixed mode ad hoc network structure |
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| CN101730301A (en) * | 2009-12-08 | 2010-06-09 | 西安元智系统技术有限责任公司 | Wireless sensor network and sensor network-based water quality monitoring system |
| CN201976262U (en) * | 2011-04-06 | 2011-09-14 | 嘉兴学院 | Hierarchical wireless sensor network system facing agricultural digital information collection |
| CN102547247A (en) * | 2012-01-31 | 2012-07-04 | 天津大学 | Field intelligent monitoring system based on long-distance wireless mesh network |
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- 2013-02-25 CN CN2013100577387A patent/CN103200705A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101730301A (en) * | 2009-12-08 | 2010-06-09 | 西安元智系统技术有限责任公司 | Wireless sensor network and sensor network-based water quality monitoring system |
| CN201976262U (en) * | 2011-04-06 | 2011-09-14 | 嘉兴学院 | Hierarchical wireless sensor network system facing agricultural digital information collection |
| CN102547247A (en) * | 2012-01-31 | 2012-07-04 | 天津大学 | Field intelligent monitoring system based on long-distance wireless mesh network |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301906A (en) * | 2014-11-07 | 2015-01-21 | 济南银澳科技有限公司 | Method for relay communication between gateways of wireless sensor network |
| CN112291732A (en) * | 2020-10-19 | 2021-01-29 | 中国科学院自动化研究所 | Environment monitoring system, method and device based on mixed mode ad hoc network structure |
| CN112291732B (en) * | 2020-10-19 | 2021-07-23 | 中国科学院自动化研究所 | Environment monitoring system, method and device based on mixed mode ad hoc network structure |
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