CN208401884U - A kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system - Google Patents
A kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system Download PDFInfo
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Abstract
The utility model discloses a kind of hybrid communication systems for Construction of Hydropower Engineering Real-time quality monitoring system, common network including the public wireless data sending communication modes using telecom operators, work area has also been built from establishing network, the work area from establishing network include dam area wireless communication networks and work area wireless communication networks；From establishing network inside the work area used in the entire work area of wireless communication networks confession under directions hydroelectric project of work area, the application range of work area wireless communication networks is greater than dam area wireless communication networks, including flowing station equipment, network system, signal processor and database server；The utility model realizes while supporting the hydroelectric project Real-time quality monitoring autonomous communication network-building method of the communication modes such as a variety of wireless communication networks, work area Ethernet, solves the problems, such as the constructing communication network method how to be adapted therewith according to the data transmission feature and requirement formulation of different construction quality real-time monitoring systems.
Description
Technical field
The utility model relates to large-scale hydroelectric project construction quality real-time monitoring fields.More particularly to a kind of large-scale water conservancy water
Digital monitor system Numerous in electrical engineering, constitute it is complicated in the case where, according to the different data transmission of each monitoring system with
Monitoring requirement establishes corresponding autonomous communication mixed networking method.More particularly to for Construction of Hydropower Engineering Real-time quality monitoring system
The hybrid communication system of system.
Background technique
Since the hydroelectric project general construction period is long, project scale is big, and working procedure is complicated, and technical requirements are high, matter of constructing
Amount is directly related to the safety of engineering, therefore carrying out stringent quality monitoring to each construction link in its process of construction seems especially
It is important.With the rapid development of Internet technology and going deep into for application, digitlization Real-time Monitor Technique moves to maturity from rudiment, and
It is widely applied in Construction of Hydropower Engineering monitoring, to realize real-time automation collection and the fining of dam construction information
Monitoring.However due to Construction of Hydropower Engineering area complicated topographical conditions, communication condition is poor, with digitlization real-time monitoring system day
Benefit develops towards diversification, fining, a wide range of direction, how to be passed according to the data of different construction quality real-time monitoring systems
It is urgent problem to be solved instantly that defeated feature and requiring, which formulates constructing communication network method adaptable therewith,.
Data wireless transmission method in traditional work area, for technical characterstic, public affairs that multiselect is provided with telecom operators
With wireless data sending communication modes, such as global system for mobile communications (GSM) and general packet radio service technology (GPRS).However,
It is high using public wireless data transmission mode power consumption, it is at high cost, in there are more network black spots, stabilizations in Construction of Hydropower Engineering area
Property it is poor and high to telecommunication carrier networks dependency degrees, the safety of data transmission cannot ensure, thus can not be in water power work
Popularity is carried out under journey complicated construction engineering specifications.
Private radio number passes communication network and is developed rapidly at present, mainly includes wireless digital broadcasting station, near-field communication
(NFC), the short-range communication techniques such as Wireless Fidelity (WIFI), bluetooth (BT) and purple honeybee (Zigbee) and China are independently ground
The big-dipper satellite of hair positions and communication system.Wireless data sending communication network becomes increasingly popular, to continuously improve and improving water power work
Journey construction quality real-time monitoring system autonomous communication network-building method provides new opportunity.
According to different wireless communication characteristics, while the economy from network structure, applicability, safety and autonomous
Property consider, in conjunction with the specific requirements of different monitoring system data transmission, the utility model proposes be suitable for Construction of Hydropower Engineering
The autonomous mixed networking method that can be used for various communications protocols of Real-time quality monitoring system, has adapted to water power work to a greater extent
The production requirement of journey construction quality real-time monitoring system.
Utility model content
The construction work amount of hydroelectric project is huge, and construction link is numerous, and work progress is extremely complex, in order to respectively apply to engineering
The construction quality of work link carries out strict control, needs to carry out construction quality real time monitoring to it by digital monitoring means,
The hydroelectric project monitoring content of different dam types is different, mainly includes that stone rolls monitoring system by taking common earth and rockfill dam as an example
System, stockpile add water integrated control system, grouting real-time monitoring system, palm PC (PDA) real-time information collection system, upper dam
Transportational process real-time monitoring system etc..The communication frequency as required by each monitoring system, data integration quantity, system operation
Regional scope etc. is different, in order to improve economy, applicability, the peace of hydroelectric project Real-time quality monitoring system real time communication
Full property and independence, overcome deficiency in the prior art, and spy proposes for the mixed of Construction of Hydropower Engineering Real-time quality monitoring system
Hop communication system.
The purpose of this utility model is achieved through the following technical solutions:
A kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system, including use telecom operators
Public wireless data sending communication modes common network, also built work area from establishing network, the work area from establishing network include dam
Area's wireless communication networks and work area wireless communication networks；
Dam area wireless communication networks refer to inside the work area only used within the scope of hydroelectric project dam construction area from establishing network,
It is made of flowing station equipment, base station and positioning compensation system, network system, signal conversion relay station and database server,
The flowing station equipment includes the mobile satellite location equipment being installed on construction machinery, sensor device, data processing equipment and fortune
Defeated integrated wireless radio frequency (RFID) equipment mechanically, the data processing equipment are cpu central processing unit；The base station with
Positioning compensation system improves machinery positioning precision by real time differential technology, and the signal conversion relay station is connected as signal to be saved
Point is converted for signal；The database server includes server of the system and database, and the server of the system is used for data
Parsing, send with charge free, the database be used for data storage；The network system selects private radio number to pass communication network with full
Sufficient site operation Real-time quality monitoring autonomous communication requirement, wherein private radio number passes communication network by wireless data transmitting terminal
(DTU) it is constituted with wireless data receiving end, including wireless digital broadcasting station, Wireless Fidelity (WIFI) and purple honeybee communication (Zigbee)
At least one of three kinds of communication modes；
The dam area wireless communication networks data transmission stream journey are as follows: pass through flowing station equipment, base station and positioning compensation system
System obtains construction machinery job position coordinate and status information in real time, and the information of acquisition is sent out with electromagnetic wave by network system
It send to signal and converts relay station, send data to rear database server through signal conversion, pass through server of the system logarithm
It is written in database according to being parsed and sent with charge free, and finally；
From establishing network, work area inside the work area used in the entire work area of the work area wireless communication networks confession under directions hydroelectric project
The application range of wireless communication networks is greater than dam area wireless communication networks, including flowing station equipment, network system, signal processor
And database server；The flowing station equipment includes the Beidou vehicle positioning module being installed in Transport Machinery, vehicle handling
Expect sensor and data processing equipment, wherein data processing equipment is the cpu central processing unit of customization；The signal processor connects
Database server is connect, for handling signal load, anti-stop signal is interfered with each other；The network system includes Beidou vehicle-mounted data
Sending module and Beidou data receiver, wherein Beidou vehicle-mounted data sending module and Beidou vehicle positioning module are as Unified Set
It is installed on Transport Machinery at car-mounted terminal, the Beidou data receiver is connected to signal processor as separate modular, described
Database server is identical as the database server in above-mentioned dam area wireless communication networks；
The data transmission stream journey of the work area wireless communication networks are as follows: acquire vehicle location seat in real time by flowing station equipment
Above- mentioned information are committed to data processing equipment by mark and vehicle sky full load condition information, and data processing equipment is by above- mentioned information
" IP " digitization is simultaneously compressed into data packet and is committed to Beidou vehicle-mounted data sending module, and Beidou vehicle-mounted data sending module is according to number
Data packet is adjusted to Beidou communication signal according to the instruction of processing equipment and is sent to Beidou data receiver, signal processor will be northern
It is sent in database server after bucket communication signal working process, the server of the system of database server is to received data
It is parsed and is sent with charge free, and stored into database, realize the real-time Transmission of the big data based on Beidou communication.
Further, the sensor device in the flowing station equipment in dam area wireless communication networks includes vibrating sensing
Device and acceleration transducer.
Further, the range of receiving of the mobile satellite location equipment includes GPS System in USA, Russian GLONASS system
And Chinese dipper system；In conjunction with the real time differential technology of base station and positioning compensation system, mobile satellite location equipment makes construction machinery
Horizontal positioning accuracy be 1-2cm, perpendicular positioning precision be 2-3cm.
Further, wireless data transmitting terminal (DTU) one group of data of upload per second in dam area wireless communication networks,
Working frequency is 300~350MHz, and transmission rate is 512~256Kbps, constant transmissions distance≤50km.
Further, the base station in dam area wireless communication networks and wireless data receiving end are installed on unsheltered
Mountain top or roof.
Further, uniformly integrated car-mounted terminal is fixed with GPS/RDSS bimodulus for Beidou in the work area wireless communication networks
Bit function, positioning accuracy 20m, data transfer interval 1min, single communication capacity maximum 256bt.
Further, only with dam area wireless communication networks in tunnel.
Compared with prior art, beneficial effect brought by the technical solution of the utility model is:
(1) realize while supporting the hydroelectric project quality of the communication modes such as a variety of wireless communication networks, work area Ethernet
It monitors autonomous communication network-building method in real time, how special according to the transmission of the data of different construction quality real-time monitoring systems solves
The problem of point is with the constructing communication network method for requiring formulation to be adapted therewith.
(2) private radio number passes communication modes compared with public wireless data sending communication modes, solves it due in water power
Engineering construction area stability is not relatively high, independence is poor and is not suitable for the commonly used problem in construction area, is covered by selecting
The private radio number that lid range is different, function is different passes communication network, and power consumption is lower, flexibility, economy with height and
Stability.
(3) private radio communication network communication quality stabilization, strong interference immunity, it is at low cost, easy to use, be applicable in region model
It encloses smaller and concentrates, and do not depend on telecommunication carrier networks, it can be achieved that real-time autonomous communication.
(4) transmission of work area wireless communication networks data is reliable, communications cost is low, strong interference immunity, be applicable in territorial scope compared with
Extensively, and telecommunication carrier networks are not depended on, autonomous communication can be carried out.
(5) by realizing the autonomous communication networking of hydroelectric project Real-time quality monitoring, to digitize real-time monitoring system from now on
Increasingly deeply develop towards diversification, fining, a wide range of direction and lays the foundation.
Detailed description of the invention
Fig. 1 is the utility model hybrid communication system structural framing figure.
Fig. 2 is common network data transmission procedure flow chart.
The area Tu3Shi Ba wireless communication networks data transmission procedure flow chart.
Fig. 4 is work area wireless communication networks data transmission procedure flow chart.
Specific embodiment
The utility model will be further described with reference to the accompanying drawing.
Hydroelectric project project amount is big, and construction link is numerous, and work progress is complicated, for the construction to each construction link of engineering
Quality carries out strict control, needs to carry out using Real-time quality monitoring it by Intellectualized monitoring means.Due to each real-time
Communication frequency required by monitoring system, data integration quantity, systems operating range etc. are different, in order to improve hydroelectric project
Economy, applicability, safety and the independence of Real-time quality monitoring system real time communication, the utility model proposes a kind of
Hold autonomous hybrid communication system of the multiple kinds including plurality of wireless networks, work area Ethernet.
As shown in Figure 1, the system includes common network and work area from establishing network.Wherein common network uses telecom operators
Public wireless data sending communication modes；It is divided into dam area wireless communication networks and work area wireless communication networks from establishing network inside work area
Two parts.
(1) public wireless data sending communication modes
Public wireless data sending communication modes provide network for telecom operators, and main includes more based on frequency division multiple access and time-division
Global mobile communication (GSM) system of location data connection approach and it is based on general point of CDMA (CDMA) data connection approach
Group wireless service technology (GPRS) two ways.Its network coverage is big, and mode is flexible, can real-time Transmission, however the network
In Construction of Hydropower Engineering area, stability is not high, is relatively also easy to produce network black spots, and independence is poor, the smaller, workspace suitable for data volume
Domain is flexible but the preferable working condition of signal stabilization.
PDA real-time information collection system refers in hydroelectric project Real-time quality monitoring system passes through during dam construction
Management side or construction party hold the real-time acquisition that PDA carries out field data.Since the system has application in entire work area range,
Working region is flexibly but the visual field is all more open, and data volume is smaller, while PDA can be with self by installation client identification module
The service network of telecom operators is accessed, the wireless data transmission speed of 100Mbps may be implemented in highest, therefore public nothing can be used
Line number passes communication modes and solves the problems, such as PDA real-time information collection system data transmission.
The above common network data transmission procedure is carried out by taking PDA real-time information collection system as an example according to 2 mode of attached drawing:
Field test administrative staff use the timely typing on-site test data information of PDA, including field test data, dam filing to roll
Information, transportation to dam information of vehicles and construction site photo etc., the data are sent to by public wireless data sending communication network
PDA database server, and pass through data analytical calculation and be written in database, after collected data are analyzed by control centre
Draw a conclusion feed back in intelligent terminal user hand inquire, analyze and management, thus realize site operation data in time more
Newly with the rectification that reports an error of work progress.
Therefore public wireless data sending communication modes can solve the problems, such as such as PDA real-time information collection system data transmission, and have
Have the advantages that low construction cost, wide coverage and traffic rate are high.
(2) dam area wireless communication networks
Dam area wireless communication networks refer to only within the scope of hydroelectric project dam construction area inside workable work area from networking
Network, by flowing station equipment, base station, positioning compensation system, network system, signal conversion relay station and database server group
At.Flowing station equipment includes the high-precision mobile satellite location equipment being mounted on all kinds of construction machineries, a series of sensor devices, number
According to integrated wireless radio frequency (RFID) equipment etc. in processing equipment and Transport Machinery, wherein data processing equipment is mainly industry collection
At computer CPU central processing unit.Base station and positioning compensation system are to improve machinery positioning precision using real time differential technology.Letter
Number conversion relay station is mainly used for signal conversion as signal connecting node.Database server mainly include server of the system and
Database, wherein server of the system is used for the parsing of data, sends with charge free, and database is used for the storage of data.Network system is selected
Private radio number passes communication network to meet site operation Real-time quality monitoring autonomous communication requirement, and wherein private radio number passes logical
News network is made of wireless data transmitting terminal (DTU) with wireless data receiving end, it is contemplated that the communication technologys such as bluetooth, near-field communication
Data transmission distance is closer, it is difficult to apply in Construction of Hydropower Engineering area, it is therefore preferable that private radio number passes communication network packet
Containing at least one of short range communication systems such as wireless digital broadcasting station, Wireless Fidelity and purple honeybee.
High-precision mobile satellite location equipment is three star problem equipment, and range of receiving covers GPS System in USA, Russia
GLONASS system and Chinese independent research dipper system.In conjunction with the real time differential technology of base station, positioning compensation system, apply
Work machinery positioning precision is up to horizontal accuracy 1-2cm, vertical precision 2-3cm.DTU data transmission device one group of number of upload per second
According to working frequency is 300~350MHz, and transmission rate is 512~256Kbps, constant transmissions distance≤50km.Meanwhile benchmark
It stands and wireless data receiving end should be installed on unsheltered mountain top or roof, convenient for receiving signal, reduce interference.
The above dam area wireless communication networks data transmission procedure is carried out according to 3 mode of attached drawing: by flowing station equipment, benchmark
It stands, positioning compensation system, a series of sensors and RFID device, obtains construction machinery job position coordinate data and state in real time
The monitoring data such as information.If wireless digital broadcasting station is selected to carry out data transmission, which passes through a modem (MODEM)
Data pulse signal is converted into analog signal, is emitted using ultrashort wave radio set, the relay station of signal conversion later will simulate
Signal converted back into digital pulse signal simultaneously sends data to rear database server, passes through server of the system pair on server
Data are parsed and are sent with charge free, and are finally written in database；If WiFi is selected to carry out data transmission, which will be sent to neighbour
Close network node, and send data to signal conversion relay station through wireless router and be sent to host computer database service
Device further carries out parsing to data through server of the system on database server and sends write-in database with charge free；If selecting
Zigbee carries out data transmission, which will be acquired data network node and be sent to Zigbee remittance in a manner of multi-hop change
Node, sink nodes transmit data to gateway, and gateway carries out Zigbee resolve packet, extract effective information number from data packet
According to progress protocol conversion and data packet packing are packaged into TCP/IP data packet, transfer data to information by Ethernet transmission
Relay station is converted, the data transmission of whole network is further completed.Analysis is extracted to data by client later, for phase
Pass personnel inquire site operation quality, analyze and manage, and carry out feedback control to instruct site operation, further plus
It is strong that the entirety of each work progress of hydroelectric project is held.
Further, since work area wireless communication networks can not position Transport Machinery in tunnel, in tunnel
Domestic demand uses dam area wireless communication networks.Its data transmission procedure follows the steps below: when Transport Machinery enters tunnel, by
It is mounted on radio station's device at tunnel fork road to be positioned, and passes through ZigBee technology in tunnel or adjacent wireless
Data radio station sends data to hole equipment, further transfers data to database clothes by dam area wireless communication networks
Business device.
Therefore, native machinery, rolling compaction machine are such as spread in real-time monitoring system, are mixed machinery, grouting machine, are transported in tunnel
The Communication of the equipment monitorings device such as machinery due to the more demanding of communication frequency and stability, therefore uses private radio
Number passes the networking plan of communication network.Advantage be communication quality stabilization, strong interference immunity, it is at low cost, easy to use, be applicable in ground
Domain range is smaller and concentrates, and does not depend on telecommunication carrier networks, it can be achieved that real-time autonomous communication.
(3) work area wireless communication networks
Work area wireless communication networks refer in the entire work area of hydroelectric project inside workable work area from establishing network, answer
It is greater than dam area wireless communication networks with range, main includes flowing station equipment, network system, signal processor, database service
Device.Flowing station equipment includes at Beidou vehicle positioning module, vehicle loading and unloading sensor and the data being installed in Transport Machinery
Equipment is managed, wherein data processing equipment is mainly the cpu central processing unit customized.Signal processor is directly connected to database service
Device, for processing more signal loads, anti-stop signal is interfered with each other.Network system mainly uses Beidou communication network to be led to
Believe, including Beidou vehicle-mounted data sending module and Beidou data receiver, wherein Beidou vehicle-mounted data sending module and Beidou vehicle
Locating module is carried to be installed at the top of Transport Machinery cockpit as unified integrated car-mounted terminal, and Beidou data receiver is as single
Only module is connected to signal processor.Database server is identical as dam area wireless communication networks.
Specifically, Beidou uniformly integrates car-mounted terminal with GPS/RDSS bimodulus positioning function, positioning accurate in the present embodiment
Spend 20m, data transfer interval 1min, single communication capacity maximum 256bt.
As shown in figure 4, work area wireless communication networks data transmission procedure is by taking transport monitor system outside tunnel as an example, according to
Lower step carries out: vehicle position coordinates and vehicle sky full load condition information are acquired in real time by flowing station equipment, it then will be above-mentioned
Information is committed to data processing equipment, and data processing equipment is by above- mentioned information " IP " digitization and is compressed into data packet and submits to north
Trolley carries data transmission blocks, and Beidou vehicle-mounted data sending module adjusts data packet according to the instruction of data processing equipment later
It is sent to Beidou data receiver for Beidou communication signal, signal processor will be sent to number after Beidou communication signal working process
According in the server of library, server of the system is parsed and is sent with charge free to received data, and is stored into database, to realize base
In the real-time Transmission of the big data of Beidou communication.
The purpose of transportation to dam real-time monitoring system is realized by material source point to emptying point, to transportation to dam vehicle transport mistake
The real time monitoring of journey.Since real-time monitoring system communication frequency requirement is lower, data volume is few, therefore for haulage vehicle outside tunnel
Location information system carries out networking using work area wireless communication networks.It is characterized in that data transmission is reliable, communications cost is low, anti-
Interference is strong, it is wider to be applicable in territorial scope, and does not depend on telecommunication carrier networks, can carry out autonomous communication.
It is established as Intelligent real-time monitoring system from now on increasingly deeply develops towards diversification, fining, a wide range of direction
Fixed basis, the utility model proposes the mixing that can be used for various communications protocols suitable for hydroelectric project Real-time quality monitoring oneself
Main network-building method improves the economy of hydroelectric project Real-time quality monitoring, applicability, safety and autonomous to a greater extent
Property.
The utility model is not limited to embodiments described above.Above the description of specific embodiment is intended to describe
With illustrate the technical solution of the utility model, the above mentioned embodiment is only schematical, is not restrictive.?
In the case of not departing from the utility model aims and scope of the claimed protection, those skilled in the art are practical at this
The specific transformation of many forms can be also made under novel enlightenment, these are belonged within the protection scope of the utility model.
Claims (7)
1. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system, which is characterized in that including using
The common network of the public wireless data sending communication modes of telecom operators has also built work area from establishing network, and the work area is self-built
Network includes dam area wireless communication networks and work area wireless communication networks；
Dam area wireless communication networks are only limitted to use within the scope of hydroelectric project dam construction area, by flowing station equipment, base
Quasi- station is formed with positioning compensation system, network system, signal conversion relay station and database server, the flowing station equipment packet
Include the integrated nothing in the mobile satellite location equipment being installed on construction machinery, sensor device, data processing equipment and Transport Machinery
Line radio frequency (RFID) equipment, the data processing equipment are cpu central processing unit；The base station passes through with positioning compensation system
Real time differential technology improves machinery positioning precision, and the signal conversion relay station is converted as signal connecting node for signal；
The database server includes server of the system and database, and the server of the system is used for the parsing of data, sends with charge free, described
Database is used for the storage of data；It is real to meet site operation quality that the network system selects private radio number to pass communication network
When monitoring autonomous communication requirement, wherein private radio number pass communication network connect by wireless data transmitting terminal (DTU) with wireless data
Receiving end is constituted, including in wireless digital broadcasting station, Wireless Fidelity (WIFI) and purple honeybee communication (Zigbee) three kinds of communication modes
It is at least one；
The dam area wireless communication networks data transmission stream journey are as follows: real by flowing station equipment, base station and positioning compensation system
When obtain construction machinery job position coordinate and status information, the information of acquisition and be sent to electromagnetic wave by network system
Signal convert relay station, through signal conversion send data to rear database server, by server of the system to data into
Row is parsed and is sent with charge free, and is finally written in database；
The work area wireless communication networks are used for for using in the entire work area of hydroelectric project, and work area wireless communication networks apply model
It encloses and is greater than dam area wireless communication networks, including flowing station equipment, network system, signal processor and database server；It is described
Flowing station equipment includes that Beidou vehicle positioning module, vehicle loading and unloading sensor and the data processing being installed in Transport Machinery are set
Standby, wherein data processing equipment is the cpu central processing unit of customization；The signal processor connects database server, is used for
Signal load is handled, anti-stop signal interferes with each other；The network system includes Beidou vehicle-mounted data sending module and Beidou data
Receiving end, wherein Beidou vehicle-mounted data sending module and Beidou vehicle positioning module integrate car-mounted terminal as unification and are installed on fortune
Defeated machinery, the Beidou data receiver are connected to signal processor as separate modular, the database server with it is above-mentioned
Database server in dam area wireless communication networks is identical；
The data transmission stream journey of the work area wireless communication networks are as follows: by flow station equipment acquire in real time vehicle position coordinates and
Above- mentioned information are committed to data processing equipment by vehicle sky full load condition information, and data processing equipment counts above- mentioned information " IP "
It is committed to Beidou vehicle-mounted data sending module according to changing and being compressed into data packet, Beidou vehicle-mounted data sending module is according to data processing
Data packet is adjusted to Beidou communication signal and is sent to Beidou data receiver by the instruction of equipment, and signal processor communicates Beidou
It is sent in database server after signal working process, the server of the system of database server solves received data
It analyses and sends with charge free, and store into database, realize the real-time Transmission of the big data based on Beidou communication.
2. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 1,
It is characterized in that, the sensor device in flowing station equipment in dam area wireless communication networks includes vibrating sensor and acceleration
Spend sensor.
3. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 2,
It is characterized in that, the range of receiving of the mobile satellite location equipment includes GPS System in USA, Russian GLONASS system and China north
Bucket system；In conjunction with the real time differential technology of base station and positioning compensation system, mobile satellite location equipment keeps the level of construction machinery fixed
Position precision is 1-2cm, and perpendicular positioning precision is 2-3cm.
4. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 1,
It is characterized in that, the one group of data of upload per second of the wireless data transmitting terminal (DTU) in dam area wireless communication networks, working frequency
For 300~350MHz, transmission rate is 512~256Kbps, constant transmissions distance≤50km.
5. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 1,
It is characterized in that, the base station and wireless data receiving end in dam area wireless communication networks are installed on unsheltered mountain top or room
Top.
6. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 1,
It being characterized in that, Beidou, which uniformly integrates car-mounted terminal, in the work area wireless communication networks has GPS/RDSS bimodulus positioning function,
Positioning accuracy is 20m, data transfer interval 1min, single communication capacity maximum 256bt.
7. a kind of hybrid communication system for Construction of Hydropower Engineering Real-time quality monitoring system according to claim 1,
It is characterized in that, only with dam area wireless communication networks in tunnel.
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