CN201327586Y - Data acquisition device for power plant - Google Patents
Data acquisition device for power plant Download PDFInfo
- Publication number
- CN201327586Y CN201327586Y CNU2008201560829U CN200820156082U CN201327586Y CN 201327586 Y CN201327586 Y CN 201327586Y CN U2008201560829 U CNU2008201560829 U CN U2008201560829U CN 200820156082 U CN200820156082 U CN 200820156082U CN 201327586 Y CN201327586 Y CN 201327586Y
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- substation
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- site supervision
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
A data acquisition device for a power plant comprises a central station, an on-site monitoring substation, an on-site terminal and a gateway node station, wherein, the gateway node station is installed between the central station and the on-site monitoring substation, used for interconversion of an on-site bus protocol and a standard interface protocol of a computer in the central station, and comprises a bus communication adapter of CAN (controller area network); and the on-site monitoring substation comprises a CAN communication controller and a CAN transceiver. The data acquisition device has the advantage that by adopting the bus communication adapter of CAN in the gateway node station, and the CAN communication controller and the CAN transceiver in the on-site monitoring substation, the data acquisition device has good stability and high measuring accuracy.
Description
[technical field]
The utility model relates to automaton, relates in particular to the generating plant data collector.
[background technology]
In recent years, along with science and technology development, China's power system development is very fast, and automaticity is more and more higher.Therefore, building safe and reliable power plant's supervisory system is problem demanding prompt solution.What traditional power plant's supervisory system information transmission extensively adopted is RS-232 or RS-485 transfer bus.There are many shortcomings in this transfer bus technology aspect information transmission.Mainly show the following aspects: (1) is primary and secondary structure though the supervisory system kind, and a host node can only be arranged on the network, can't constitute how main redundant system, and after host node broke down, system then can't move.(2) owing to lacking unified standard and communication protocol, so system seals.(3) baud rate is lower, and transmission range is short, and real-time does not satisfy.
[utility model content]
Technical problem to be solved in the utility model is, a kind of good stability, generating plant data collector that measuring accuracy is high are provided.
In order to address the above problem, the utility model provides a kind of generating plant data collector, comprises central station, on-site supervision substation and on-site terminal; Described on-site terminal comprises sensor, audible-visual annunciator, and described sensor is used to collect various site environment security monitoring data and equipment running status data, and audible-visual annunciator is used for the warning of system; Described on-site supervision substation be used for sensor acquisition to various data be transferred to central station by communication media, and the guide sound light crossing-signal is reported to the police; Described central station is used to receive, store and show the generating security monitoring data that transmit from the on-site supervision substation, and sends various configuration orders and to the control command of field apparatus; Described data collector also comprises the gateway node station, is arranged between central station and the outstation, is used to realize the mutual conversion of field bus protocol and central station computer standard interface protocol; Described gateway node station comprises CAN bus communication adapter; Described on-site supervision substation comprises CAN communication controler and CAN transceiver.
As optional technical scheme, described on-site supervision substation comprises boiler control substation, steam turbine control substation and generator control substation.
As optional technical scheme, described on-site supervision substation also comprise reset circuit and DIP configuration switch,
As optional technical scheme, described on-site supervision substation also comprises emergent fallback circuit.
As optional technical scheme, adopt twisted-pair feeder to communicate between each hardware in the described on-site supervision substation.
Advantage of the present utility model is, because described gateway node station has been adopted CAN bus communication adapter and adopted CAN communication controler and CAN transceiver accordingly in described on-site supervision substation, therefore data collector good stability provided by the present invention, measuring accuracy height.
[description of drawings]
Accompanying drawing 1 is depicted as the apparatus structure synoptic diagram of the embodiment of power plant's data collector that the utility model provides;
Accompanying drawing 2 is depicted as the structural representation of on-site supervision substation of the embodiment of the generating plant data collector that the utility model provides.
[embodiment]
The embodiment of the generating plant data collector that the utility model is provided below in conjunction with accompanying drawing elaborates.
Accompanying drawing 1 is depicted as the structural representation of the described data collector of this embodiment, comprise central station, gateway node station, boiler control substation, steam turbine control substation, generator control substation and respectively with above-mentioned three on-site terminals that substation is connected.
Described on-site terminal comprises sensor, audible-visual annunciator, and described sensor is used to collect various site environment security monitoring data and equipment running status data, and audible-visual annunciator is used for the warning of system.
The on-site supervision substation controls substation, steam turbine control substation by boiler and generator control substation constitutes, be used for sensor acquisition to various data be transferred to central station by communication media, and the guide sound light crossing-signal is reported to the police.Described on-site supervision substation comprises CAN communication controler and CAN transceiver.
Described central station is used to receive, store and show the generating security monitoring data that transmit from the on-site supervision substation, and sends various configuration orders and to the control command of field apparatus.
Described gateway node station is arranged between central station and the outstation, is used to realize the mutual conversion of field bus protocol and central station computer standard interface protocol, and described gateway node station comprises the CAN communication adapter.
CAN (Controller Area Network) belongs to the category of fieldbus, and it is the serial communication network of distributed control of a kind of effective support or real-time control.The dcs that makes up based on the R line than present many RS-485 has obvious superiority in the following areas based on the dcs of CAN bus:
At first, the CAN controller works in many master modes, each node in the network all can adopt the mode of arbitration by turn of no damage structure to compete to bus according to bus access right of priority (depending on message identifier) and send data, and the CAN compromise annulment station address coding, and replace communication data is encoded, this can make different nodes receive identical data simultaneously, each data between nodes real-time communication of network that these characteristics make the CAN bus constitute is strong, and constitute redundancy structure easily, improve the reliability of system and the dirigibility of system.And utilize RS-485 can only constitute the primary and secondary structure system, and communication mode also can only carry out in the mode of main website poll, and real-time, the reliability of system are relatively poor.
Secondly, the CAN bus links to each other with physical bus with CANL by two output terminal CANH of CAN control unit interface chip 82C250, and the state of CANH end can only be high level or suspended state, and the CANL end can only be low level or suspended state.This just guarantees can not go out phenomenon in the RS-485 network, and is wrong when system, the multinode while occurs when bus sends data, causes bus to present short circuit, thereby damages the phenomenon of some node.And the CAN node has under wrong serious situation and closes output function automatically, so that the operation of other nodes is unaffected on the bus, thereby guarantees can not go out phenomenon in network, because of individual nodes goes wrong, makes bus be in " deadlock " state.
And the perfect communication protocol that CAN has can realize by CAN controller chip and interface chip thereof, thereby reduces the system development difficulty greatly, shortened the construction cycle, and these are only only to have the RS-485 of electric agreement incomparable.
Accompanying drawing 2 is depicted as the structural representation of the on-site supervision substation that comprises CAN communication controler and CAN transceiver.This on-site supervision substation is applicable to any one substation in boiler control substation, steam turbine control substation and the generator control substation according to the sensor difference that is adopted.
Microcontroller in this system (MCU) adopts the P87C51RD2 of Philips company.The CAN communication controler adopts the SJA1000 of Philips company, and the CAN transceiver adopts the P82C250 of Philips company, and watchdog circuit adopts the Serial E of Xicor company
2The incorporate circuit of PROM and WDT prevents program fleet.
DIP switch is used for the user (as baud rate etc. is set) is set, user's needs according to oneself before this on-site supervision substation carries out work are set the operational factor of system, can also be used to being provided with the node number of this on-site supervision substation, this node number is unique address that the agreement of making an appointment is distributed to each substation, and the user is configured node number according to this addresses distributed at substation before on-the-spot the installation.
Described UART/RS-485 interface conversion circuit is the emergent fallback circuit of system.Adopt this circuit as backup, two sets of data transmission systems have just been arranged in the then described on-site supervision substation, when the CAN communication disruption, can enable original old system RS-485 bus, thereby improved the reliability of transmission.
On-site supervision branch shown in the accompanying drawing 2 stands in the process of work, finish the isoparametric collection of temperature, blast, air quantity, water level, steam pressure, voltage, electric current and power by sensor special to generating set, changed by A/D and to have sent into MUC and handle, the line data of going forward side by side shows, simultaneously data are sent to the webmaster node station by CAN communication controler SJA1000 and CAN transceiver PCA82C250, thereby further send the host computer of central station to.If data surpass alarming value, single-chip microcomputer can be controlled sound and light alarm.When surpassing dangerous values, the Single-chip Controlling corresponding relays is closed the switch of corresponding acquisition channel.
In addition, adopt twisted-pair feeder to communicate, the echo on cable reflection ripple and antinoise signal line disturbs, and add 120 ohm terminal resistance in the both sides of order wire.
In the above-mentioned on-site supervision substation, comprise the various hardware of MCU, CAN communication controler and CAN transceiver, interface conversion circuit and watchdog circuit etc., be the content that this embodiment is described and the ardware model number of choosing.In actual applications; described hardware should be not limited on the model and production firm in this embodiment; all can reasonably replace in the known scope of those skilled in that art, this kind replacement should be considered to be no more than protection domain of the present utility model.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a generating plant data collector comprises central station, on-site supervision substation and on-site terminal;
Described on-site terminal comprises sensor, audible-visual annunciator, and described sensor is used to collect various site environment security monitoring data and equipment running status data, and audible-visual annunciator is used for the warning of system;
Described on-site supervision substation be used for sensor acquisition to various data be transferred to central station by communication media, and the guide sound light crossing-signal is reported to the police;
Described central station is used to receive, store and show the generating security monitoring data that transmit from the on-site supervision substation, and sends various configuration orders and to the control command of field apparatus; It is characterized in that:
Also comprise the gateway node station, be arranged between central station and the outstation, be used to realize the mutual conversion of field bus protocol and central station computer standard interface protocol;
Described gateway node station comprises CAN bus communication adapter;
Described on-site supervision substation comprises CAN communication controler and CAN transceiver.
2. generating plant according to claim 1 data collector is characterized in that, described on-site supervision substation comprises boiler control substation, steam turbine control substation and generator control substation.
3. generating plant according to claim 1 data collector is characterized in that, described on-site supervision substation also comprises reset circuit and DIP configuration switch.
4. generating plant according to claim 1 data collector is characterized in that, described on-site supervision substation also comprises emergent fallback circuit.
5. generating plant according to claim 1 data collector is characterized in that, adopts twisted-pair feeder to communicate between each hardware in the described on-site supervision substation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201560829U CN201327586Y (en) | 2008-11-28 | 2008-11-28 | Data acquisition device for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201560829U CN201327586Y (en) | 2008-11-28 | 2008-11-28 | Data acquisition device for power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201327586Y true CN201327586Y (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201560829U Expired - Fee Related CN201327586Y (en) | 2008-11-28 | 2008-11-28 | Data acquisition device for power plant |
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| CN (1) | CN201327586Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841452A (en) * | 2010-04-30 | 2010-09-22 | 北汽福田汽车股份有限公司 | Vehicle control local area network (LAN) CAN network |
| CN102307130A (en) * | 2011-07-01 | 2012-01-04 | 上海纳杰电气成套有限公司 | Optical fibre transmission field bus system for ships |
| CN102926807A (en) * | 2012-09-17 | 2013-02-13 | 太原理工大学 | Monitoring and early-warning communication method for mine |
| CN103810823A (en) * | 2014-02-27 | 2014-05-21 | 神华集团有限责任公司 | Alarm processing method and device |
| CN106209965A (en) * | 2016-06-16 | 2016-12-07 | 深圳市益普科技有限公司 | A kind of equipment connection machine management system |
-
2008
- 2008-11-28 CN CNU2008201560829U patent/CN201327586Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841452A (en) * | 2010-04-30 | 2010-09-22 | 北汽福田汽车股份有限公司 | Vehicle control local area network (LAN) CAN network |
| CN101841452B (en) * | 2010-04-30 | 2012-06-13 | 北汽福田汽车股份有限公司 | Vehicle control local area network (LAN) CAN network |
| CN102307130A (en) * | 2011-07-01 | 2012-01-04 | 上海纳杰电气成套有限公司 | Optical fibre transmission field bus system for ships |
| CN102926807A (en) * | 2012-09-17 | 2013-02-13 | 太原理工大学 | Monitoring and early-warning communication method for mine |
| CN102926807B (en) * | 2012-09-17 | 2015-11-25 | 太原理工大学 | A kind of Mine Monitoring early warning communication means |
| CN103810823A (en) * | 2014-02-27 | 2014-05-21 | 神华集团有限责任公司 | Alarm processing method and device |
| CN103810823B (en) * | 2014-02-27 | 2016-04-20 | 神华集团有限责任公司 | Alarm processing method and device |
| CN106209965A (en) * | 2016-06-16 | 2016-12-07 | 深圳市益普科技有限公司 | A kind of equipment connection machine management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Fuyun Conveyig Machinery Co., Ltd. Assignor: Shanghai Dianji University Contract record no.: 2010310000108 Denomination of utility model: Data acquisition device for power plant Granted publication date: 20091014 License type: Exclusive License Record date: 20100716 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20121128 |