CN203454337U - Energy-saving intelligent control system of central air conditioner based on Profibus bus - Google Patents
Energy-saving intelligent control system of central air conditioner based on Profibus bus Download PDFInfo
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- CN203454337U CN203454337U CN201320518894.4U CN201320518894U CN203454337U CN 203454337 U CN203454337 U CN 203454337U CN 201320518894 U CN201320518894 U CN 201320518894U CN 203454337 U CN203454337 U CN 203454337U
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Abstract
The utility model discloses an energy-saving intelligent control system of a central air conditioner based on a Profibus bus. The energy-saving intelligent control system comprises a remote monitoring center, a local control platform, a programmable logic controller, a data collection terminal, a variable water volume control device, a variable air volume control device, a refrigeration host control device and an electric energy metering system, wherein the remote monitoring center is connected to the local control platform through Ethernet; the local control platform is connected to the programmable logic controller through the Ethernet. The energy-saving intelligent control system has the advantages of good stability, convenience for data exchange, high reliability, strong capacity of resisting disturbance and high intelligence. By adopting the Profibus field bus, the energy-saving intelligent control system is convenient for data exchange and high in reliability, the investment of users can be reduced, the condition of operation stopping or incapability of operating automatically after communication interrupt of upper computers in many conventional devices can be solved, and the energy utilization rate of the system is improved through intelligent predication of a computer and manual data correction.
Description
Technical field
The utility model relates to air-conditioner control system, especially relates to a kind of energy-saving intelligent control system for central based on Profibus bus.
Background technology
The control of existing central air-conditioning is all generally to adopt a plurality of small PLCs, and each small PLC is controlled an equipment; Such as a PLC controls 1 ~ 2 water pump, a PLC controls electric butterfly valve etc.Adopt this control mode to have following problem: because the quantity of PLC is many, if need to accomplish that team control just needs the exchanges data between a plurality of PLC, and accomplish that these exchanges data can adopt by ethernet module the form of server and client, it is the situation of server and client that this form exists a plurality of PLC, and due to the discontinuity of the address of the data of needs exchanges, can cause data exchange process very complicated, and be unfavorable for programming.In addition also can do intermediary with host computer, but this mode depends on that host computer must move and it does not have fault with communicating by letter of slave computer, this mode can not guarantee the reliability of system.Also can adopt master-slave communication in addition, such as the PPI communication of Siemens, but this mode can not realize communicating by letter between slave station and slave station.Showing of above problem, if central air conditioner system wants to accomplish team control, the optimum way of taking is exactly to solve above-mentioned communication issue with fieldbus.
Summary of the invention
The utility model object is to provide a kind of energy-saving intelligent control system for central based on Profibus bus.With a little less than solving the existing poor stability of prior art, poor reliability, antijamming capability, the technical problem such as intelligent degree is low.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the energy-saving intelligent control system for central based on Profibus bus, comprises remote monitoring center, controls platform, Programmable Logic Controller, data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device, electric energy metered system on the spot; Described remote monitoring center adopts Ethernet to be connected with controlling on the spot between platform; This is controlled on the spot between platform and Programmable Logic Controller and adopts Ethernet to be connected; Described Programmable Logic Controller is connected data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device respectively by Profibus bus by a Large PLC.
As preferably, described remote monitoring center with control platform on the spot and formed by industrial computer, upper computer module, database.
As preferably, the described platform of controlling is on the spot connected with electric energy metered system by RS485 bus, and wherein electric energy metered system, comprises central air conditioner main machine electric energy metrical, chilled water pump electric energy metrical, cooling water pump electric energy metrical, air conditioning terminal electric energy metrical.
As preferably, described data collection station is connected with data processing centre, and the receiving terminal of this data collection station is connected with scene temperature sensor, ambient temperature and humidity sensor, water ga(u)ge, pressure sensor differential pressure meter respectively.
As preferably, described scene temperature sensor is used for monitoring chilled water supply and return water temperature, cooling water supply and return water temperature, water knockout drum inflow temperature, water collector leaving water temperature.
As preferably, described variable water volume control device regulates the flow of central air conditioning water system for intelligence.
As preferably, described variable air rate control device regulates the flow of central air-conditioning wind system for intelligence.
As preferably, described refrigeration host computer control device regulates the operation number of units of main frame for intelligence, gathers the operational factor of refrigeration host computer.
The utlity model has that good stability, exchanges data are convenient, reliability is high, antijamming capability is strong, intelligent degree advantages of higher.The utility model adopts Profibus bus, and exchanges data is convenient, and reliability is high, can either reduce user's input, the out of service or situation about can not automatically move of the equipment after the host computer interrupt communication that at present a lot of equipment exists of can solving again; Watch-dog of the present utility model can each equipment of Real-Time Monitoring ruuning situation, can the fault of consersion unit, the reason of generation, the information such as how to process, can add up every day, monthly, annual energy consumption data.Can also be by accumulation optimized operation data, the data source of Based Intelligent Control computer; By computer intelligence, predict with the artificial data of revising and improve system energy utilization rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model energy-saving intelligent control system for central.
Fig. 2 is the utility model variable water volume, variable air rate control device operation principle block diagram.
Fig. 3 is the operation principle block diagram of the utility model refrigeration host computer control device.
Fig. 4 is the utility model energy-saving intelligent control system for central control principle block diagram.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
Fig. 1 is the structural representation of the utility model energy-saving intelligent control system for central.As shown in Figure 1, energy-saving intelligent control system for central based on Profibus bus, mainly by remote monitoring center, control platform, Programmable Logic Controller, data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device, electric energy metered system etc. on the spot and form.Remote monitoring center adopts Ethernet to be connected with controlling on the spot between platform; This is controlled on the spot between platform and Programmable Logic Controller and adopts Ethernet to be connected.Wherein remote monitoring center with control platform on the spot and formed by industrial computer, upper computer module, database.Control on the spot platform and be connected with electric energy metered system by serial converter RS485/RS232 bus, wherein electric energy metered system, comprises central air conditioner main machine electric energy metrical, chilled water pump electric energy metrical, cooling water pump electric energy metrical, air conditioning terminal electric energy metrical.
Programmable Logic Controller is connected data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device respectively by Profibus bus by a Large PLC.Data collection station will directly obtain the data of spot sensor, after processing, is transferred in PLC by data processing centre.Variable water volume control device can intelligence regulates the flow of central air conditioning water system; Variable air rate control device can intelligence regulates the flow of central air-conditioning wind system; Refrigeration host computer control device can intelligence regulates the operation number of units of main frame, gathers the operational factor of refrigeration host computer.
Data collection station is connected with data processing centre, and the receiving terminal of this data collection station is connected with scene temperature sensor, ambient temperature and humidity sensor, water ga(u)ge, pressure sensor differential pressure meter respectively.Wherein scene temperature sensor is used for monitoring chilled water supply and return water temperature, cooling water supply and return water temperature, water knockout drum inflow temperature, water collector leaving water temperature.
Fig. 2 is the utility model variable water volume, variable air rate control device operation principle block diagram.As shown in Figure 2, variable water volume control device and variable air rate control device are when work, first by data collection station image data, then select control model (constant-pressure drop control model, constant difference control model, return water temperature control model, temp .-differential control model) and operational factor is set, after processing by data processing centre, output operational factor is input to equipment, thereby intelligence regulates the flow of central air conditioning water system and wind system.
Fig. 3 is the operation principle block diagram of the utility model refrigeration host computer control device.As shown in Figure 3, during the work of refrigeration host computer control device, first by data collection station image data, then the data of collection are processed by data processing centre, accumulation optimized operation data, these data can be used as the data source of empirical data, Based Intelligent Control computer, and definite air-conditioning is opened number of units and start equipment.
Fig. 4 is the utility model energy-saving intelligent control system for central control principle block diagram.As shown in Figure 4, during energy-saving intelligent control system for central work, first, by data collection station image data, then the data of collection are processed by data processing centre, and contrasted the data of historical data base the inside, judgement is optimized operation data; If not optimal data, native system can be predicted with the artificial data of revising and be improved system energy utilization rate by computer intelligence, accumulation optimized operation data, and these data can be used as the data source of empirical data, Based Intelligent Control computer; If optimal data is saved in database output, thereby revise host parameter, refrigerating water pump parameter, cooling water parameter, tail-end blower fan parameter, reach optimum.
Claims (8)
1. the energy-saving intelligent control system for central based on Profibus bus, comprises remote monitoring center, controls platform, Programmable Logic Controller, data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device, electric energy metered system on the spot; It is characterized in that, described remote monitoring center adopts Ethernet to be connected with controlling on the spot between platform; This is controlled on the spot between platform and Programmable Logic Controller and adopts Ethernet to be connected; Described Programmable Logic Controller is connected data collection station, variable water volume control device, variable air rate control device, refrigeration host computer control device respectively by Profibus fieldbus by a Large PLC.
2. the energy-saving intelligent control system for central based on Profibus bus according to claim 1, is characterized in that, described remote monitoring center with control platform on the spot and formed by industrial computer, upper computer module, database.
3. the energy-saving intelligent control system for central based on Profibus bus according to claim 1 and 2, it is characterized in that, the described platform of controlling is on the spot connected with electric energy metered system by RS485 bus, wherein electric energy metered system, comprises central air conditioner main machine electric energy metrical, chilled water pump electric energy metrical, cooling water pump electric energy metrical, air conditioning terminal electric energy metrical.
4. the energy-saving intelligent control system for central based on Profibus bus according to claim 1, it is characterized in that, described data collection station is connected with data processing centre, and the receiving terminal of this data collection station is connected with scene temperature sensor, ambient temperature and humidity sensor, water ga(u)ge, pressure sensor differential pressure meter respectively.
5. the energy-saving intelligent control system for central based on Profibus bus according to claim 4, it is characterized in that, described scene temperature sensor is used for monitoring chilled water supply and return water temperature, cooling water supply and return water temperature, water knockout drum inflow temperature, water collector leaving water temperature.
6. the energy-saving intelligent control system for central based on Profibus bus according to claim 1, is characterized in that, described variable water volume control device is for regulating the flow of central air conditioning water system.
7. the energy-saving intelligent control system for central based on Profibus bus according to claim 1, is characterized in that, described variable air rate control device is for regulating the flow of central air-conditioning wind system.
8. the energy-saving intelligent control system for central based on Profibus bus according to claim 1, is characterized in that, described refrigeration host computer control device, for regulating the operation number of units of main frame, gathers the operational factor of refrigeration host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518894.4U CN203454337U (en) | 2013-08-24 | 2013-08-24 | Energy-saving intelligent control system of central air conditioner based on Profibus bus |
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| CN201320518894.4U CN203454337U (en) | 2013-08-24 | 2013-08-24 | Energy-saving intelligent control system of central air conditioner based on Profibus bus |
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| CN203454337U true CN203454337U (en) | 2014-02-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906687A (en) * | 2017-11-27 | 2018-04-13 | 中山路得斯空调有限公司 | A kind of central air-conditioning demand response control system based on local end's temperature adjustment |
| CN112032940A (en) * | 2020-09-14 | 2020-12-04 | 深圳市华富可节能技术有限公司 | Air conditioner room group control system |
| US10948211B2 (en) | 2018-05-11 | 2021-03-16 | Carrier Corporation | Water circulation system for air conditioning system and control method thereof |
-
2013
- 2013-08-24 CN CN201320518894.4U patent/CN203454337U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906687A (en) * | 2017-11-27 | 2018-04-13 | 中山路得斯空调有限公司 | A kind of central air-conditioning demand response control system based on local end's temperature adjustment |
| US10948211B2 (en) | 2018-05-11 | 2021-03-16 | Carrier Corporation | Water circulation system for air conditioning system and control method thereof |
| CN112032940A (en) * | 2020-09-14 | 2020-12-04 | 深圳市华富可节能技术有限公司 | Air conditioner room group control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20170824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |