CN104537815B - A kind of mobile material metrical information transmission method - Google Patents
A kind of mobile material metrical information transmission method Download PDFInfo
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- CN104537815B CN104537815B CN201410764221.6A CN201410764221A CN104537815B CN 104537815 B CN104537815 B CN 104537815B CN 201410764221 A CN201410764221 A CN 201410764221A CN 104537815 B CN104537815 B CN 104537815B
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Abstract
The invention discloses a kind of mobile material metrical information transmission methods, it is characterized in that, the method is to set 2 terminal acquisition modules in each material metering point, the collected metrical information of terminal acquisition module is automatically transferred to data server through data relay stations and the network switch and is shown and stored, simultaneously, the identical metrical information of acquisition is actively forwarded to the hand-held mobile terminal in signal coverage by another terminal acquisition module by data relay stations, by hand-held mobile terminal to metrical information data（Dose times, number of weighing, gross weight, tare weight, net weight, source place, destination, operating personnel）After carrying out Put on file, then through data relay stations and the network switch it is transferred to data server；Two paths of data information is isolated using division communication subnet and logical communication link two ways, is passed through corresponding information conduit and is carried out redundant transmission.The reliability of data transmission can be greatly improved in the present invention.
Description
Technical field
The present invention relates to grid computing technology field more particularly to a kind of mobile material metrical information transmission methods.
Background technology
In industrial process stream, limited by conditions such as production scene temperature, space environments, mobile material metrical information
Transmission is generally received using radio station and wireless terminal module radiation pattern.Years development is passed through by radio station, undergoes from mould
Intend evolution process of the signal modulation to Digital Transmission, transmission rate, security reliability improve.Radio station can use
The wireless network that points are few, transmitting data stream amount is small is communicated in setting up.Since radio station uses wireless device terminal one by one
The working method of scanning, data transmission real-time be not high.Radio station occupies particular communication frequency range simultaneously, must be to radio tube
It can be set up after reason committee confirmation request.The laser propagation effect that radio station ambient enviroment seriously affects metrical information is received, in electromagnetism
It radiates in national standard tolerance band, especially steel-structure factory building, pyrometallurgy stove accumulation regions, data packetloss, the bit error rate are quite tight
Weight.When conventional wireless radio station acquires for data, including equipment acquisition terminal, transmitting antenna, radio station, reception antenna, net
The major parts such as network interchanger, data server, communication cable, system basic framework are as shown in Figure 1.
Invention content
In order to solve the problems in the prior art, the purpose of the present invention is to provide a kind of mobile material metrical information redundant transmission
Method.
Above-mentioned purpose is realized by following proposal：
A kind of mobile material metrical information transmission method, which is characterized in that the method is set in each material metering point
2 terminal acquisition modules are put, the collected metrical information of terminal acquisition module passes automatically through data relay stations and the network switch
It is defeated to be shown and stored to data server, meanwhile, another terminal acquisition module is by the identical metrical information of acquisition by data
Relay station is actively forwarded to the hand-held mobile terminal in signal coverage, and metrical information data are divided by hand-held mobile terminal
After class filing, then through data relay stations and the network switch it is transferred to data server；Two paths of data information is communicated using division
Subnet and logical communication link two ways are isolated, and redundant transmission is carried out by corresponding information conduit.
According to above-mentioned information transferring method, which is characterized in that the data relay stations are from motion tracking overlay area
Hand-held mobile terminal position and signal detection intensity, and according to position and the azimuth of signal strength adjustment member array antenna and
Gain intensity realizes that communication link optimizes.
According to above-mentioned information transferring method, which is characterized in that the mobile handheld terminal carries out material metering data
Related metrical information operation be stored in mobile handheld terminal embedded database, while synchronized update data server measure
Data.
According to above-mentioned information transferring method, it is characterised in that：End according to data relay stations distribution each in the area of coverage
Hold quantity, initiative roaming threshold value, select data transfer path；According to data transfer path, adjust array antenna
Orientation, quantityAnd radio-frequency emission power；Real-time update system mode, according to terminal the area of coverage spatial position shape
The terminal radio frequency signal strength that condition, distribution of obstacles, each data relay stations receive, adjusting parameter information plans number again
According to transmission path；Each parameter calculation formula and meaning are as follows：
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
It is transmitting RF signal strength type；
It is data relay stations quantity；
It isThe authorization terminal quantity of a data relay stations access；
It is the insertion authority mobile terminal quantity in overlay area；
It is the mobile terminal signal strength type grade that data relay stations receive,, data relay stations, which receive, to be believed
Number intensity is low,, data relay stations received signal strength is general,, data relay stations received signal strength height；
It is data relay stations signal strength scale lower limiting value, if existing in overlay network compared with strong signal, actively carries out
Switching；
It is data relay stations signal strength signal upper limit value, during higher than the value, mobile terminal is roamed without relay station；
It is the threshold value that data relay stations are managed mobile terminal；
It is that current mobile terminal corresponds to all data relay stations RF signal strength maximum values；
It is the corresponding each data relay stations RF signal strength of current mobile terminal；
It is the radiofrequency signal of mobile terminal intensity value that data relay stations receive；
It is that data relay stations receiveThe RF signal strength value of a mobile terminal；
It is that data relay stations array antenna corresponds to theThe adjustment direction angle of a mobile terminal, unit are radian；
It isThe antenna amount that a mobile terminal should distribute；
It is relay station array antenna total quantity；
It is air line distance of the mobile terminal away from relay station, unit m；
It is horizontal linear distance of the mobile terminal away from relay station, unit m；
It is radio wave transmissions speed, is；
It is time, unit s used in relay station wireless signal to corresponding mobile terminal；
It is the maximum radio frequency power of relay station single antenna, unit is dB.
Beneficial effects of the present invention：
1. the present invention relays distributed transmission technologies more using, avoid conventional wireless digital radio station radio-frequency emission power big,
In the presence of transmission dead zone, industry and national standard are not met, live interference can not be overcome, there are Dead Core Problems, realize green, peace
Entirely, it is environmentally friendly；
It 2. the present invention uses binary-channel redundancy transmission technology, can mutually verify between two channel continuous datas, send out in time
Existing maloperation；
3. mobile material is moved towards using hand-held mobile terminal by the present invention and metrical information is classified, traditional concentration is avoided
Formula metering system, materials handling personnel should operate mobile vehicle, effectively slow again the problem of operation measuring equipment status information
Solve the labor intensity of vehicle operator.
It, can be to all 4. for the present invention when system communications line breaks down, handheld terminal has the function of data buffering
Mode of operation and data carry out off-line data storage, and after grids is waited to restore, handheld terminal data synchronization updating uploads to number
According to server.The present invention is accurate and practical, cost-effective, is conducive to large-scale promotion application.
Description of the drawings
Fig. 1 is conventional digital radio station network framework schematic diagram；
Fig. 2 is the distributed network architecture schematic diagram of the present invention；
Fig. 3 is the data-transformation facility figure of the present invention；
Fig. 4 is the test result schematic diagram of one embodiment of the present of invention.
Specific embodiment
The network architecture that the present invention uses is as shown in Fig. 2, including mobile material metering host 1, data collection station 2, number
According to relay station 3, hand-held mobile terminal 4（Such as PDA）, radio network controller 5, the network switch 6, data server 7（It is i.e. upper
Machine）, the compositions such as communication cable 8.
The mobile material metrical information transmission method of the present invention sets 2 terminal acquisition modules in each material metering point,
The collected metrical information of terminal acquisition module is automatically transferred to data server through data relay stations and the network switch and carries out
Display and storage, meanwhile, the identical metrical information of acquisition is actively forwarded to letter by another terminal acquisition module by data relay stations
Hand-held mobile terminal in number area of coverage, by hand-held mobile terminal to metrical information data（Dose times, number of weighing, gross weight,
Tare weight, net weight, source place, destination, operating personnel）Host computer is transferred to by data relay stations and the network switch；Two-way
Data information is isolated using division communication subnet and logical communication link two ways, passes through corresponding information conduit
Carry out redundant transmission.
Data relay stations are from the hand-held mobile terminal position in motion tracking overlay area and signal detection intensity, and according to position
It puts and is optimized with the azimuth of signal strength adjustment member array antenna and gain intensity, realization communication link.
According to above-mentioned information transferring method, which is characterized in that the mobile handheld terminal carries out material metering data
Related metrical information operation be stored in mobile handheld terminal embedded database, while synchronized update data server measure
Data.
Concrete implementation step is as follows：
1）According to data relay stations quantity, determine hand-held mobile terminal and terminal acquisition mould in the data relay stations area of coverage
Number of blocksAnd its characteristic description（It networksIdentification code, physical address, logical addressIt is strong with transmitting radiofrequency signal
DegreeType）；2）Hand-held mobile terminal and terminal acquisition module quantity according to data relay stations distribution each in the area of coverage, initiative roaming threshold value, select data transfer path； 3）According to data transfer path, adjustment array antenna orientation, quantityAnd radio-frequency emission power；4）Establish terminal acquisition module-data relay stations-network switch-data clothes
Business first information transmission path of device；5）Establish terminal acquisition module-data relay stations-ambulatory handheld-data relay stations-network
Interchanger-data server Article 2 redundant transmission paths；6）Data are stored and are sorted out；7）Real-time update system mode, according to end
Hold the terminal radio frequency signal strength received in the spatial position situation of the area of coverage, distribution of obstacles, each data relay stations,
Adjusting parameter information starts step（1）-（7）Again layout data transmission path.
Calculation formula is as follows：
(1)
(2)
(3)
(4)
(5)
(6)
（7)
(8)
It is transmitting RF signal strength type；
It is data relay stations quantity；
It isThe authorization terminal quantity of a data relay stations access；
It is the insertion authority mobile terminal quantity in overlay area；
It is the mobile terminal signal strength type grade that data relay stations receive,, data relay stations reception
Signal strength is low,, data relay stations received signal strength is general,, data relay stations received signal strength height；
It is data relay stations signal strength scale lower limiting value, if existing in overlay network compared with strong signal, actively carries out
Switching；
It is data relay stations signal strength signal upper limit value, during higher than the value, mobile terminal is roamed without relay station；
It is the threshold value that data relay stations are managed mobile terminal；
It is that current mobile terminal corresponds to all data relay stations RF signal strength maximum values；
It is the corresponding each data relay stations RF signal strength of current mobile terminal；
It is the radiofrequency signal of mobile terminal intensity value that data relay stations receive；
It is that data relay stations receiveThe RF signal strength value of a mobile terminal；
It is that data relay stations array antenna corresponds to theThe adjustment direction angle of a mobile terminal, unit are radian；
It isThe antenna amount that a mobile terminal should distribute；
It is relay station array antenna total quantity；
It is air line distance of the mobile terminal away from relay station, unit m；
It is horizontal linear distance of the mobile terminal away from relay station, unit m；
It is radio wave transmissions speed, is；
It is time, unit s used in relay station wireless signal to corresponding mobile terminal；
It is the maximum radio frequency power of relay station single antenna, unit is dB.
With reference to specific embodiment, to the part input and output of metallurgical smelting production system and intermediate transition material metering
Explanation is described in detail in information scheme using the present invention.
It is 450m in length, when implementing in the high temperature with high dust metallurgical smelting workshop of width 25m, disposes 5 number of units altogether
According to relay station, every spacing distance 70m.To realize to multi-client from motion tracking and data information exchange, select 0.5W low
360 ° of universe array antenna type data relay stations of power high-gain dustproof and waterproof.Data relay stations are uniformly solid along workshop length direction
It is scheduled at the roof of workshop.
Mobile material metering host is mounted in driving, is shown for the large-size screen monitors scene for weighing data of driving a vehicle, and provides 2 tunnels
Serial communication interface.Metering host connects 2 data collection station modules respectively in the present invention, and input data uses serial ports
RS232 agreements, transmit data check and baud rate is consistent with metering host.Two-way output uses TCP/IP wireless transparents
Transport protocol, but the two data run is in different communication link channels and vLan subnets.Wherein all the way metrical information through number
Data server is uploaded to according to relay station, the network switch, another way metrical information is by hand-held mobile whole in the communication subnet
Timing active trigger data service request is held, metering host is numbered, continuous data, operation information（Including gross weight, tare weight, net
Weight, operating time, material source, material whereabouts etc.）Through hand-held mobile terminal, data relay stations, network switch synchronized update
To data server.
Hand-held mobile terminal is for the reception weighing data information that metering host is sent out in network coverage area and weighs
Host is numbered, while according to mobile material mode of operation, different material is sorted out.Hand-held mobile terminal deployment SQLCE is embedding
Enter formula database, can be synchronized more by communication network and data server SQL Server data base view field informations
Newly.Metrological operation information operation after the completion of be stored in handheld terminal embedded database, and with data in data server
Library synchronized update.
Radio network controller is used to be managed monitoring to data relay stations, data collection station, hand-held mobile terminal.
The signal strength of client is monitored, dynamically calculates the communication distance of each client and data relay stations.And according to signal strength
Variation carries out initiative roaming switching.
In the present embodiment：Metering host selects Mei Teletuo benefit XK3130, data collection station selection USR-WIFI
600 Series Industrial grade three proofings modules, data relay stations selection American industry grade outdoor version low-power consumption RUCKUS
Zoneflex2741, radio network controller selection U.S.'s RUCKUS ZoneDirector3000 types, hand-held mobile terminal selection
The IP68 high-protection level Trimble Nomad of Tian Bao company of the military project grade outdoor type U.S..For the data information of the present embodiment
Transmission link select and the specific implementation process is as follows：
1. according into data relay stationsClient terminal quantity, the distribution of adjust automatically array antennaAnd antenna
Array orientation angle；
2. the feedback signal strength of networking client corresponding data relay station is accessed according to radio network controllerWith
Relative distance, select the data relay stations that need to connect of client：
And, then corresponding to the data relay stations that client connects is
The rf gain of the adjusting array antenna of corresponding data relay station is；
, and, then client connection is corresponded to
Data relay stations are
The rf gain of the adjusting array antenna of corresponding data relay station is；
Corresponding client connection data relay stations do not change, and the rf gain of array antenna is
。
3. select redundant transmission link
According to hand-held mobile terminal, the affiliated subnet of data collection station module and its corresponding gateway address by continuous data
Information is divided into different vLan subnets；
4. a road continuous data is sent to hand-held mobile terminal through data collection station, hand-held mobile terminal is to coming from number
Put on file is carried out according to the metrical information of acquisition terminal, is selected including Dose times, gross weight, tare weight, net weight, material source and whereabouts
It selects, confirms after the completion of operation and keep in SQLCE embedded databases in hand-held mobile terminal, while log-on data renewal model will
Current operating information is synchronized to remote data server；
5. the vLan subnet channel transfers that another way continuous data is directly set through data collection station by data relay stations
To remote data server.
6. terminating, pending next operation is waited.
By under the conditions of high temperature, dusty, complex steel structure in metallurgical smelting production system workshop in terms of distributed mobile material
Amount information transferring method and the centralized radio station's pattern of tradition are compared in terms of radio-frequency power size, error rates of data,
Wherein abscissa is transmission range, and ordinate is radio-frequency power and the bit error rate.As known to table 1 and Fig. 4, by the present invention according to production
The data of practical calculation of measured data and radio station formula mobile material metering system carry out drawing expression, and abscissa is transmission range, indulge and sit
It is designated as the data relay stations maximum radio frequency power measured using the present invention and the corresponding bit error rate.As can be seen that it is distributed in the present invention
The leading indicator of formula redundant transmission is as follows：
1）The invention can effectively overcome the BER excess in complex industrial production environment caused by transmission range, number
According to packet loss problem, accomplish that data transmission is reliable and stable；
2）Radio-frequency power increased dramatically caused a series of problems under the conditions of the invention can solve long distance transmission, point
The adjustment of cloth data relay stations radio-frequency power exists always《Electromagnetic radiation protection standard》In GB8702-88 controlled ranges, reach raw
Both production and safety take into account；
3）Open system, expansible and system compatibility is high, and data communication protocol is completely open, is skillfully constructed, is simple easy
Implement.
Table 1
Claims (1)
1. a kind of mobile material metrical information transmission method, which is characterized in that the method is to set 2 in each material metering point
A terminal acquisition module, the collected metrical information of terminal acquisition module are automatically transferred to through data relay stations and the network switch
Data server is shown and is stored, meanwhile, another terminal acquisition module is relayed the identical metrical information of acquisition by data
Station owner's turn is dealt into the hand-held mobile terminal in signal coverage, and by hand-held mobile terminal metrical information data are carried out with classification and is returned
After shelves, then through data relay stations and the network switch it is transferred to data server；Two paths of data information is using division communication subnet
It is isolated with logical communication link two ways, redundant transmission is carried out by corresponding information conduit；In the data
After station from the hand-held mobile terminal position in motion tracking overlay area and signal detection intensity, and according to position and signal strength tune
The azimuth of whole subarray antenna and gain intensity realize that communication link optimizes；The hand-held mobile terminal is to material meter
The Put on file operation information that amount data carry out is stored in mobile handheld terminal embedded database, while synchronized update is upper
Machine continuous data；Terminal quantity according to data relay stations distribution each in the area of coverage, initiative roaming threshold value, selection
Data transfer path；According to data transfer path, adjustment array antenna orientation, quantityWith radio-frequency transmissions work(
Rate；Real-time update system mode, according to terminal in the spatial position situation of the area of coverage, distribution of obstacles, each data relay stations
The terminal radio frequency signal strength received, adjusting parameter information, layout data transmission path again；Each parameter calculation formula
It is as follows with meaning：
(1)
(2)
(3)
（4）
(5)
(6)
(7)
(8)
It is transmitting RF signal strength type；
It is data relay stations quantity；
It is the authorization terminal quantity of i-th of data relay stations access；
It is the insertion authority mobile terminal quantity in overlay area；
It is the mobile terminal signal strength type grade that data relay stations receive,, data relay stations reception signal
Intensity is low,, data relay stations received signal strength is general,, data relay stations received signal strength height；
It is data relay stations signal strength scale lower limiting value, if existing in overlay network compared with strong signal, is actively cut
It changes；
It is data relay stations signal strength signal upper limit value, during higher than the value, mobile terminal is roamed without relay station；
It is the threshold value that data relay stations are managed mobile terminal；
It is that current mobile terminal corresponds to all data relay stations RF signal strength maximum values；
It is the corresponding each data relay stations RF signal strength of current mobile terminal；
It is the radiofrequency signal of mobile terminal intensity value that data relay stations receive；
It is the RF signal strength value for i-th of mobile terminal that data relay stations receive；
It is the adjustment direction angle that data relay stations array antenna corresponds to i-th of mobile terminal, unit is radian；
It is the antenna amount that i mobile terminal should distribute；
It is relay station array antenna total quantity；
It is air line distance of the mobile terminal away from relay station, unit m；
It is horizontal linear distance of the mobile terminal away from relay station, unit m；
It is radio wave transmissions speed, is；
It is time, unit s used in relay station wireless signal to corresponding mobile terminal；
It is the maximum radio frequency power of relay station single antenna, unit is dB；
。
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| CN105721581A (en) * | 2016-02-19 | 2016-06-29 | 金川集团股份有限公司 | Distributed measurement information transmission method |
| CN110545361A (en) * | 2019-08-28 | 2019-12-06 | 江苏秉信科技有限公司 | method for realizing real-time reliable interaction of power grid information based on IP telephone |
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| CN1658183A (en) * | 2004-02-20 | 2005-08-24 | 高放 | Material information monitoring system and method |
| CN101213569A (en) * | 2005-04-21 | 2008-07-02 | Imrc股份有限公司 | System and method for information technology assessment |
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