CN206209306U - A kind of multi-client independent bus line device server for carrying redundant signals collection - Google Patents
A kind of multi-client independent bus line device server for carrying redundant signals collection Download PDFInfo
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- CN206209306U CN206209306U CN201621081284.2U CN201621081284U CN206209306U CN 206209306 U CN206209306 U CN 206209306U CN 201621081284 U CN201621081284 U CN 201621081284U CN 206209306 U CN206209306 U CN 206209306U
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Abstract
The utility model discloses a kind of multi-client independent bus line device server for carrying redundant signals collection, including signal probe group, signal gathering unit and several RTU clients, that is remote data terminal, signal probe group includes that several main signals are popped one's head in and the space signal probe corresponding with each main signal probe, signal gathering unit includes main signal collecting unit and from signal gathering unit, main signal collecting unit includes that a host programmable gateway unit and several slaves may be programmed gateway unit, host programmable gateway unit quantity is corresponding with main signal probe quantity with the summation of the programmable gateway unit quantity of slave；Include may be programmed gateway unit with main signal collecting unit quantity identical host programmable gateway unit and slave from signal gathering unit, the programmable gateway management unit of each programmable gateway unit signal of main signal collecting unit can be also managed from signal gathering unit and monitored including one.
Description
Technical field
The field that the utility model patent is related to is industrial automation signal acquisition and communication, and more particularly to one kind carries superfluous
The multi-client independent bus line device server of remaining signal acquisition.
Background technology
In industrial control field, it is nearly all be related to communication bus be all in the form of RS485 two-wire system buses,
The advantage of this forms of RS485 is：
First, represented by+(2~6) V of the voltage difference of line-to-line using differential signal negative logic, logic " 0 "；Logic " 1 " with
The voltage difference of line-to-line is represented for-(2~6) V.Interface signal level is low not to allow fragile chip.
2nd, the data maximum transmission rate of RS-485 is 10Mbps.
3rd, RS-485 interfaces are the combinations using balance driver and differential receiver, anti-common mode disturbances ability enhancing, i.e.,
Noise immunity is good.
4th, RS-485 maximum communication distance is about 1219m, and peak transfer rate is 10Mbps, and maximum can support
To 400 nodes.
Because any of the above advantage, this example, in hardware bus structures are widely used in various Industry Controls, intelligence instrument
Deng field.Data transfer on this bus form, typically all uses Modbus protocol formats, and the benefit of this agreement is mark
It is accurate, open, user can freely, relievedly use Modbus agreements, without paying license fee, will not also invade knowledge
Property right.And data possess CRC check, transmission will not malfunction.
Just it is a kind of simple, reliable and effective communication mode from the point of view of simple this bus structures and protocol format.In reality
In the system on border, the process that our cellular system obtains gathered data has following several ways：
Mode 1, obtains after the data that the first intelligence instrument of reading is removed by client, and other RTU clients can only be by RTU
Main frame is forwarded, and realizes the shared of data, and such bus structures can only go to realize data sharing in this way with agreement.
This bus network advantage is：
1st, circuit is simply easily realized.
This bus network has the disadvantage：
1st, RTU1# clients all lose collection signal if there is failure, and level of security is low；
2nd, Fig. 1 is directed to, 3 kinds of forwardings need for increasing equipment cost.
3rd, three sets of systems share a probe, and system does not have redundancy to there is potential safety hazard.
Mode 2,1# clients go to obtain the signal of the first signal probe by the first intelligence instrument, and 2# clients are by the
Two intelligence instruments go to obtain the signal of secondary signal probe, and 3# clients go to obtain the 3rd signal probe by the 3rd intelligence instrument
Signal.
This bus network advantage is：
1st, for three clients to same independent signal acquisition, system safely, have Redundancy Design.
This bus network has the disadvantage：
1st, circuit is more complicated；
2nd, the acquisition probe scene as same point installs three sets not necessarily possesses mounting condition；
3rd, equipment cost is high, installation implementation cost is high, after-sales service high cost；
4th, the probe of such as 1# systems is bad, and the bad two-way system of client of 2# systems can not all be run.System can not be mutually standby
With.
Utility model content
The purpose of this utility model is directed to above mentioned problem, and propose a kind of utilization standard communication protocol form carries redundancy
The multi-client independent bus line device server scheme of signal acquisition, realizes mutual standby between signal redundancy and multiple client
A kind of bus carry redundant signals collection multi-client independent bus line device server.Redundancy Design in the utility model
Each function type signal probe is referred to for 11 standby mode of master is designed, each signal gathering unit is 1 master 1 from setting
Meter, each RTU client has an independent communication circuit to be linked into this device server, does not interfere with each other mutually.
To realize the utility model purpose, there is provided following technical scheme：A kind of many clients for carrying redundant signals collection
End independent bus line device server, including signal probe group, signal gathering unit and several RTU clients, signal probe
Group includes several main signals probe and the space signal probe corresponding with each main signal probe, signal gathering unit bag
Include main signal collecting unit and from signal gathering unit, main signal collecting unit include a host programmable gateway unit and
Several slaves may be programmed gateway unit, summation of the host programmable gateway unit quantity with the programmable gateway unit of slave and master
Signal probe quantity is corresponding；Include and main signal collecting unit quantity identical host programmable gateway from signal gathering unit
Unit and the programmable gateway unit of slave, can also manage from signal gathering unit including one and monitor main signal collecting unit
The programmable gateway management unit of each programmable gateway unit signal；Each programmable net on the main signal collecting unit
Unit is closed to correspond and connected with the programmable gateway unit from signal gathering unit.
As optimization, a RTU for carrying out data transmission is equipped with described each programmable gateway unit.
As optimization, the programmable gateway unit phase of host programmable gateway unit and slave of the main signal collecting unit
Connected with programmable gateway management unit again after parallel connection between mutually.
As optimization, programmable gateway unit on corresponding main signal collecting unit and from signal gathering unit
Being accessed in series connection node after programmable gateway unit series connection can receive main signal collecting unit and from signal gathering unit
The RTU clients of signal.
Used as optimization, each main signal probe is connected with the programmable gateway unit of corresponding main signal unit, often
Individual space signal probe is connected with corresponding from the programmable gateway unit of signal element.
RTU servers be prior art, RTU servers be it is a be exclusively used in bus expandable applications, it is programmable, can drive
The card track module moved standard RTU bus apparatus and support various main flow man-machine interfaces to access.The function that such circuit possesses：
1st, RTU bus programmables type server capability, user can be according to setting main frame, slave, station number and corresponding the need for oneself
Function is selected.2nd, RTU servers have two groups of 0-24V power supplys to power, X0,X1Port is input into for data signal, XIBelieve for simulation port
Number it is input into for gathering, C1And Y0、C2And Y1Port exports for relay, A1And B1、A2And B2Port is two groups of communications, 4 LED
Indicator lamp and a communication aperture.
Operation principle：In main signal collecting unit, host programmable gateway unit is arranged to main frame, and slave may be programmed gateway
Unit is arranged to slave station.Host programmable gateway unit is responsible for reading slave programmable gateway unit and programmable gateway management
The data that unit is collected, after the data for collecting are read, together with the data of the collection of oneself, being then written to slave can compile
In journey gateway unit and programmable gateway management unit, so may be programmed gateway unit and all obtain main gathered data, while from
Host programmable gateway unit in signal gathering unit also obtain the data of the signal of main signal collecting unit and standby adopt
Collection data.Gateway management unit is may be programmed from signal gathering unit and is arranged to main frame, can from the main frame in signal gathering unit
Programming gateway unit and the programmable gateway unit of slave are arranged to slave station.It is responsible for from from letter by programmable gateway management unit
After standby gathered data being read in the programmable gateway unit of host programmable gateway unit and slave on number collecting unit, and
The main collection signal sent plus the programmable gateway unit in main signal end after collecting re-sends to slave station from signal gathering unit
Host programmable gateway unit and the programmable gateway unit of slave in, the host programmable net so from signal gathering unit
Close unit and the programmable gateway unit of slave all obtains standby gathered data and main gathered data.By whole after this step
All possesses gathered data in programmable gateway.
When host programmable gateway unit A0 in main signal collecting unit can be normal, from the programmable of signal gathering unit
Gateway management unit B 0 serves as the standby group of host programmable gateway unit of B, when A0 is out of order, from signal gathering unit can
Programming gateway management unit B 0 can obtain signal and send a signal to, from the host programmable gateway unit of signal gathering unit
The even other programmable gateway units of B1, but it is finally to enable the host programmable gateway unit from signal gathering unit
B1 replaces the effect of the host programmable gateway unit A0 in main signal collecting unit, and enabling can from the main frame of signal gathering unit
The signal probe group of programming gateway unit B1.
RTU clients get the main frame from signal gathering unit respectively by the RS485 bus forms of conventional criteria
The gathered data that programmable gateway unit and the programmable gateway unit of slave are collected simultaneously.
RTU servers have the following advantages：
1st, RTU servers come with physics acquisition function (various types of signal acquisition probe group is directly connected with RTU servers,
Need not move through intelligence instrument).
2nd, each programmable gateway unit uses a RTU, direct unidirectionally controlled each the programmable gateway list of RTU clients
The RTU of unit, is then communicated by RTU classifications to the component in cabinet, and communication quality is greatly improved；
3rd, may be programmed, circuit control can be carried out by different programs for programmable gateway unit.Can be according to live real
Border situation selection port quantity, if damaging occurs in scene, need to only change corresponding port, improve efficiency, cost-effective；
4th, for the fast construction of automatic safe redundant system provides condition.
The utility model beneficial effect：The utility model is compared with prior art：
1st, using lines in parallel mode, data sharing is realized；
2nd, equipment cost is low, install implementation is easily achieved, after-sales service low cost；
3rd, the equipment either in signal probe group, signal gathering unit or any group of RTU clients goes wrong, all
There is corresponding stand-by equipment to substitute, do not influence data acquisition, level of security is high.
Brief description of the drawings
Fig. 1 is the schematic diagram of prior art one；
Fig. 2 is the schematic diagram of prior art two；
Fig. 3 is the utility model system schematic；
Fig. 4 is programmable gateway unit structural representation.
Specific embodiment
Embodiment 1
A kind of multi-client independent bus line device server for carrying redundant signals collection, including signal probe group, signal
Collecting unit and several RTU clients, signal probe group include that several main signals are popped one's head in and visited with each main signal
Corresponding space signal probe, signal gathering unit includes main signal collecting unit and from signal gathering unit, main letter
Number collecting unit includes a host programmable gateway unit A0 and two slaves programmable gateway unit A1, A2, and main frame can be compiled
Journey gateway unit quantity is corresponding with main signal probe quantity with the summation of the programmable gateway unit of slave；From signal gathering unit
Including may be programmed gateway unit with main signal collecting unit quantity identical host programmable gateway unit and slave, also including one
The individual programmable net that can be managed from signal gathering unit and monitor each programmable gateway unit signal of main signal collecting unit
Close administrative unit B0；Each programmable gateway unit on the main signal collecting unit and compiling from signal gathering unit
Journey gateway unit is corresponded and connected.That is the host programmable gateway unit A0 of main signal collecting unit is corresponding from signal
Host programmable gateway unit B1 on collecting unit, the programmable gateway unit A1 of slave of main signal collecting unit is corresponding from letter
The programmable gateway unit B2 of slave on number collecting unit, the programmable gateway unit A2 correspondences of slave of main signal collecting unit from
The programmable gateway unit B3 of slave in signal gathering unit.
A RTU for carrying out data transmission is equipped with described each programmable gateway unit.
Programmable gateway unit A1, the A2 of the host programmable gateway unit A0 and slave of the main signal collecting unit is mutual
Between parallel connection after connected with programmable gateway management unit B 0.
Programmable gateway unit on corresponding main signal collecting unit and the programmable net from signal gathering unit
Close and can receive the RTU of main signal collecting unit and the signal from signal gathering unit in series connection node access after unit is connected
Client.
I.e.：Host programmable gateway unit A0 on main signal collecting unit and the main frame from signal gathering unit can be compiled
Being accessed in series connection node after journey gateway unit B1 series connection can receive main signal collecting unit and the letter from signal gathering unit
Number RTU clients C0.
The programmable gateway unit A1 of slave on main signal collecting unit and the slave from signal gathering unit are programmable
Being accessed in series connection node after gateway unit B2 series connection can receive main signal collecting unit and the signal from signal gathering unit
RTU clients C1.
The programmable gateway unit A2 of slave on main signal collecting unit and the slave from signal gathering unit are programmable
Being accessed in series connection node after gateway unit B3 series connection can receive main signal collecting unit and the signal from signal gathering unit
RTU clients C2.
Each main signal probe is connected with the programmable gateway unit of corresponding main signal unit, each space signal
Probe is connected with corresponding from the programmable gateway unit of signal element.
Concrete operation method is：Host programmable gateway unit A0 in main signal collecting unit is arranged to main frame, main letter
Slave programmable gateway unit A1, A2 in number collecting unit are arranged to No. 1 and No. 2 station of slave.In main signal collecting unit
Host programmable gateway unit A0 is responsible for reading slave programmable gateway unit A1, A2 in main signal collecting unit and from signal
The data that the programmable gateway management unit B 0 of collecting unit is collected, after the data for collecting are read, together with oneself
The data of collection, are then written to slave in main signal collecting unit programmable gateway unit A1, A2 and from signal gathering unit
Programmable gateway management unit B 0 in, such three programmable gateway units all obtain three main gathered datas, at the same from
The programmable gateway management unit B 0 of signal gathering unit also obtain 3 groups of signals of main signal collecting unit data and three
Standby gathered data.
When host programmable gateway unit A0 in main signal collecting unit can be normal, from the programmable of signal gathering unit
Gateway management unit B 0 serves as the standby group of host programmable gateway unit of B, when A0 is out of order, from signal gathering unit can
Programming gateway management unit B 0 can obtain signal and send a signal to, from the host programmable gateway unit of signal gathering unit
The even other programmable gateway units of B1, but it is finally to enable the host programmable gateway unit from signal gathering unit
B1 replaces the effect of the host programmable gateway unit A0 in main signal collecting unit, and enabling can from the main frame of signal gathering unit
The signal probe group of programming gateway unit B1.
It is arranged to main frame from the programmable gateway management unit B 0 of signal gathering unit, from the programmable of signal gathering unit
Gateway unit B1, B2, B3 are arranged to slave 1, No. 2, No. 3 stations.By the programmable gateway management list from signal gathering unit
After first B0 is responsible for reading three standby gathered datas from from programmable gateway unit B1, B2, B3 of signal gathering unit, and
The main collection signal sent plus the programmable gateway unit in main signal end after collecting re-sends to slave station from signal gathering unit
In programmable gateway unit B1, B2, B3, such three all obtain from programmable gateway unit B1, B2, B3 of signal gathering unit
Three standby gathered datas and three main gathered datas.All possess by programmable gateway unit whole after this step
6 gathered datas.
RTU clients (C0, C1, C2) get space signal from letter respectively by the RS485 bus forms of conventional criteria
6 gathered datas that programmable gateway unit B1, B2, B3 of number collecting unit are collected simultaneously.Dual redundant RTU device servers
The function flow direction analysis of failure：
The signal probe group, including conventional type temp probe, 4~20MA current mode signal pick-ups type probe, DC0~
The direct voltage signal transmitting such as 10V, DC0~5V device is popped one's head in.
Main signal probe group V0 includes 1# signal probe V0-1,2# signal probe V0-2,3# signal probes V0-3；
Space signal probe group V1 includes 1# signal probe V1-1,2# signal probe V1-2,3# signal probes V1-3；
Main signal probe connection：
1# signal probes V0-1 is connected to the signal incoming end of the host programmable gateway unit A0 of main signal collecting unit,
2# signal probes V0-2 is connected to the signal incoming end of the programmable gateway unit A1 of slave of main signal collecting unit, and 3# signals are visited
Head V0-3 is connected to the signal incoming end of the programmable gateway unit A2 of slave of main signal collecting unit.
Space signal probe connection：
1# signal probes V1-1 is connected to the signal incoming end from the host programmable gateway unit B1 of signal gathering unit,
2# signal probes V1-2 is connected to the signal incoming end that gateway unit B2 is may be programmed from the slave of signal gathering unit, and 3# signals are visited
Head V1-3 is connected to the signal incoming end that gateway unit B3 is may be programmed from the slave of signal gathering unit.
First, signal probe is damaged
When damaging occurs in 1# signal probes V0-1, the host programmable gateway unit A0 of main signal collecting unit can be gathered
And Write fault signal, whole programmable gateway units can all collect this signal by respective RTU.Now adopted from signal
The host programmable gateway unit B1 for collecting unit enables 1# signal probes V1-1 to replace 1# signal probes V0-1 to work, and will letter
Breath sends the host programmable gateway unit A0 and the host programmable gateway from signal gathering unit of main signal collecting unit to
The RTU clients that series connection node is accessed after the series connection of unit B 1 are repaired.2# signal probe V0-2,3# signal probes V0-3 is with this
Analogize.
2nd, gateway is may be programmed to damage
(1) obtained less than the master in main signal collecting unit when from the programmable gateway management unit B 0 of signal gathering unit
During the data of the programmable gateway unit A0 of machine and programmable gateway unit A1, the A2 of slave, the master in acquiescence main signal collecting unit
Damaging occurs in the programmable gateway unit A0 of machine, and now programmable gateway unit A1, the A2 of the slave in main signal collecting unit is automatic
Closed communication port.The programmable net from signal gathering unit is enabled from the programmable gateway management unit B 0 of signal gathering unit
Closing unit B 1, B2, B3 replaces programmable gateway unit A0, A1, A2 in main signal collecting unit to work, and by information transmission
Repaired to RTU client devices.
(2) when damaging occurs in the programmable gateway unit A1 of the slave in main signal collecting unit, main signal collecting unit
In host programmable gateway unit A0 obtain less than corresponding reading writing information.Now the main frame in main signal collecting unit can be compiled
Journey gateway unit A0 is fed back to the programmable gateway unit A1's of slave in main signal collecting unit from signal without response message
The programmable gateway management unit B 0 of collecting unit, is enabled from letter by from the programmable gateway management unit B 0 of signal gathering unit
The programmable gateway unit B2 of the slave of number collecting unit may be programmed gateway unit A1 replacing the slave in main signal collecting unit
Work, and communicate information to RTU client devices and repaired.The programmable gateway unit of slave in main signal collecting unit
There is situation about damaging by that analogy in A2.
3rd, RTU client datas are truncated or damage
RTU clients are the RS485 bus form client devices of conventional criteria.Because RTU clients C0, C1, C2 are
Can independently get a little position data and fault-signal, and non-interference, so when the data of RTU clients C0 are cut
During disconnected or damage, RTU clients C1, C2 normally get 6 gathered datas.The data of RTU client C1 or RTU clients C2
The situation for being truncated or damaging is by that analogy.
Comparative example 1
Such as accompanying drawing 1 of mode 1, obtains, other RTU clients 4 after the data that the first intelligence instrument 2 of reading is removed by client 3
Can only be forwarded by RTU main frames 3 with 5, be realized the shared of data, such bus structures can only be in this way with agreement
Go to realize data sharing.
This bus network advantage is：
1st, circuit is simply easily realized.
This bus network has the disadvantage：
1st, RTU1# clients all lose collection signal if there is failure, and level of security is low；
2nd, Fig. 1 is directed to, 3 kinds of forwardings need for increasing equipment cost.
3rd, three sets of systems share a probe, and system does not have redundancy to there is potential safety hazard.
Comparative example 2
Such as accompanying drawing 2 of mode 2,1# clients 3 go to obtain the signal of the first signal probe 1,2# visitors by the first intelligence instrument 2
Family end 4 is gone to obtain the signal of secondary signal probe 9 by the second intelligence instrument 6, and 3# clients 5 are gone by the 3rd intelligence instrument 8
Obtain the signal of the 3rd signal probe 7.
This bus network advantage is：
1st, for three clients to same independent signal acquisition, system safely, have Redundancy Design.
This bus network has the disadvantage：
5th, circuit is more complicated；
6th, the acquisition probe scene as same point installs three sets not necessarily possesses mounting condition；
7th, equipment cost is high, installation implementation cost is high, after-sales service high cost；
Probe such as 1# systems is bad, and the bad two-way system of client of 2# systems can not all be run.System can not be mutually standby.
Claims (5)
1. it is a kind of to carry the multi-client independent bus line device server that redundant signals are gathered, including signal probe group, signal are adopted
Collection unit and several RTU clients, it is characterised in that signal probe group include several main signals pop one's head in and and each
Main signal is popped one's head in corresponding space signal probe, and signal gathering unit includes main signal collecting unit and from signal acquisition list
Unit, main signal collecting unit includes that a host programmable gateway unit and several slaves may be programmed gateway unit, and main frame can
Programming gateway unit quantity is corresponding with main signal probe quantity with the summation of the programmable gateway unit of slave；From signal acquisition list
Unit includes may be programmed gateway unit with main signal collecting unit quantity identical host programmable gateway unit and slave, also includes
One can manage from signal gathering unit and monitor may be programmed for each programmable gateway unit signal of main signal collecting unit
Gateway management unit；Each programmable gateway unit on the main signal collecting unit and compiling from signal gathering unit
Journey gateway unit is corresponded and connected.
2. it is according to claim 1 to carry the multi-client independent bus line device server that redundant signals are gathered, its feature
It is that a RTU for carrying out data transmission is equipped with described each programmable gateway unit.
3. it is according to claim 1 to carry the multi-client independent bus line device server that redundant signals are gathered, its feature
It is the programmable gateway unit of host programmable gateway unit and slave of the main signal collecting unit each other after parallel connection
Connected with programmable gateway management unit again.
4. it is according to claim 1 to carry the multi-client independent bus line device server that redundant signals are gathered, its feature
It is the programmable gateway unit on corresponding main signal collecting unit and the programmable gateway list from signal gathering unit
The RTU client of main signal collecting unit and the signal from signal gathering unit can be received after unit's series connection in series connection node access
End.
5. it is according to claim 1 to carry the multi-client independent bus line device server that redundant signals are gathered, its feature
It is that each main signal probe is connected with the programmable gateway unit of corresponding main signal unit, each space signal probe
It is connected from the programmable gateway unit of signal element with corresponding.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162316A (en) * | 2018-08-28 | 2019-01-08 | 江苏天纳节能科技股份有限公司 | A kind of industrial circulating water system and its recovery method of lift recycling more than needed |
| CN110267220A (en) * | 2019-04-30 | 2019-09-20 | 泉州维盾电气有限公司 | A kind of system and method for single host wireless device series connection networking data communication |
| CN110967551A (en) * | 2019-12-06 | 2020-04-07 | 北京和利时智能技术有限公司 | Current signal redundancy acquisition circuit |
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2016
- 2016-09-26 CN CN201621081284.2U patent/CN206209306U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162316A (en) * | 2018-08-28 | 2019-01-08 | 江苏天纳节能科技股份有限公司 | A kind of industrial circulating water system and its recovery method of lift recycling more than needed |
| CN110267220A (en) * | 2019-04-30 | 2019-09-20 | 泉州维盾电气有限公司 | A kind of system and method for single host wireless device series connection networking data communication |
| CN110267220B (en) * | 2019-04-30 | 2021-11-02 | 泉州维盾电气有限公司 | System and method for serial networking data communication of single-host wireless equipment |
| CN110967551A (en) * | 2019-12-06 | 2020-04-07 | 北京和利时智能技术有限公司 | Current signal redundancy acquisition circuit |
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