CN110716519B - Advanced chemical process control system and method - Google Patents
Advanced chemical process control system and method Download PDFInfo
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- CN110716519B CN110716519B CN201910967470.8A CN201910967470A CN110716519B CN 110716519 B CN110716519 B CN 110716519B CN 201910967470 A CN201910967470 A CN 201910967470A CN 110716519 B CN110716519 B CN 110716519B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
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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]
Abstract
The application discloses an advanced chemical process control system and method, which comprises the following steps: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the process control system to acquire the real-time data stored by the server, the processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem of low communication efficiency caused by data communication through an OPC communication protocol between the systems is avoided.
Description
Technical Field
The application relates to the field of control, in particular to an advanced chemical process control system and method.
Background
At present, in the field of coal chemical industry, a Distributed Control System (DCS) is generally adopted to Control a chemical process, however, the DCS is generally adopted to Control by a Proportional Integral Derivative (PID), which cannot fully exert the automation technical level.
In order to solve the problem, the chemical Process is controlled by a DCS control system and an APC (advanced Process control) Process control system in a unified way. However, since the DCS Control system and the APC Control system are independent from each other, data interaction between the two Control systems needs to be performed in an OPC (OLE for Process Control, OLE industry standard protocol for Process Control) manner, which results in low communication efficiency between the two independent Control systems and cannot ensure real-time performance of communication data.
Disclosure of Invention
In view of the above, the present application provides an advanced chemical process control system and method, which has the following specific schemes:
a chemical process control system, comprising:
the distributed controller is used for acquiring real-time data;
a server for storing the real-time data acquired from the distributed controller;
and the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system and are used for acquiring the real-time data stored by the server, determining a processing result after analyzing and processing the real-time data, and directly sending the processing result to the distributed controller so that the distributed controller directly acquires the processing result.
Further, the method also comprises the following steps:
and the operation unit is used for receiving input operation and directly sending an input instruction corresponding to the input operation to the advanced process controller or sending the input instruction to the advanced process controller through the server.
Further, in the above-mentioned case,
the operation unit is further configured to: the first control data of the apc is directly obtained, or the first control data of the apc is obtained through the control data of the apc stored in the server.
Further, the method also comprises the following steps:
the monitoring unit is used for acquiring second control data in the control data of the advanced process controller stored by the server and monitoring the second control data;
or the like, or, alternatively,
and the monitoring unit is used for acquiring second control data in the control data of the advanced process controller stored by the server and adjusting the control data of the advanced process controller according to the second control data.
Further, wherein,
the apc is further configured to: the real-time data acquired by the distributed controller is directly acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result.
Further, the method also comprises the following steps:
and the firewall is arranged between the process control layer consisting of the advanced process controller and the distributed controller and the server.
A chemical process control method is applied to an advanced process controller and comprises the following steps:
acquiring real-time data which is acquired by a distributed controller and stored in a server and is sent to the server;
and after analyzing and processing the real-time data, determining a processing result, and directly sending the processing result to the decentralized controller so that the decentralized controller directly obtains the processing result, wherein the decentralized controller and the advanced process controller are jointly arranged in a process control layer of a chemical process control system.
Further, the method also comprises the following steps:
and directly acquiring the real-time data acquired by the distributed controller.
A chemical process control method is applied to a decentralized controller and comprises the following steps:
acquiring real-time data, and sending the real-time data to a server for storage;
and directly acquiring a processing result sent by the advanced process controller, wherein the processing result is determined after the advanced process controller analyzes and processes the real-time data stored by the server, and the distributed controller and the advanced process controller are jointly arranged in a process control layer of a chemical process control system.
It can be seen from the above technical solutions that the advanced chemical process control system and method disclosed in the present application includes: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system, the real-time data stored by the server is acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the chemical process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem that the communication efficiency is low due to data communication through an OPC communication protocol between the systems is solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a chemical process control system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a chemical process control system according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a chemical process control system according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a chemical process control system according to an embodiment of the present disclosure;
FIG. 5 is a flow chart of a chemical process control method disclosed in an embodiment of the present application;
fig. 6 is a flowchart of a chemical process control method according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application discloses chemical process control system, its schematic structure is shown as figure 1, includes:
a distributed controller 11, a server 12 and an apc 13.
The distributed controller 11 is used for acquiring real-time data;
the server 12 is used for storing the real-time data acquired from the distributed controller 11;
the apc 13 and the discrete controller 11 are disposed at a process control layer of the chemical process control system, and are configured to obtain real-time data stored in the server 12, analyze and process the real-time data, determine a processing result, and directly send the processing result to the discrete controller 11, so that the discrete controller 11 can directly obtain the processing result sent by the apc 13.
The distributed controller 11 is a DCS distributed controller and the advanced process controller 13 is an APC advanced process controller.
The distributed controller and the advanced process controller are integrated in one control system, and data communication between the distributed controller and the advanced process controller can be realized only through a communication protocol in the control system, so that the problem that when the APC and the DCS are two independent control systems, an independent communication protocol needs to be established between the two independent systems to realize the data communication between the two systems is avoided.
Integrate decentralized controller and advanced process controller in a control system, the real-time data that obtains through server storage decentralized controller, when advanced process controller APC needs to handle real-time data, obtain the real-time data that decentralized controller stored to the server from the server, and after advanced process controller APC carries out data processing inside, send the processing result to decentralized controller DCS through the inside communication protocol of system directly, this process need not through other devices, also need not through other communication protocols, directly adopt the inside special communication protocol of system, if: the Profibus protocol enables compatibility to be better and safety to be higher in the data interaction process, and in addition, the data interaction speed in the same system is higher than that between systems.
In addition, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the control system, so that the advanced process controller and the distributed controller are directly transmitted with data in the same layer in the system without communicating with an upper layer unit, data exchange is more direct, the field industrial control process is better met, and data interaction through an internal communication protocol is realized.
Further, the chemical process control system disclosed in this embodiment may further include: a firewall.
The firewall is arranged between the process control layer formed by the advanced process controller and the distributed controller and the layer where the server is located, so that when the advanced process controller or the distributed controller is in data communication with the upper layer, data transmission can be realized only after the firewall is used for carrying out safety detection, and the safety of the system is improved; and the data communication between the advanced process controller and the distributed controller is directly realized through an internal communication protocol without a firewall, so that the transmission efficiency is improved, and the data exchange is more direct.
The distributed controllers may be plural, the servers may be plural, and the advanced process controllers may be plural. The servers and the apc may be in a one-to-one correspondence relationship or in a one-to-many correspondence relationship, that is, one server corresponds to one apc or one server corresponds to a plurality of apc; each apc may also correspond to one or more decentralized controllers.
As shown in fig. 2, includes: a first decentralized controller 21, a second decentralized controller 22, a first apc 23, a second apc 24, a first server 25, a second server 26, a first firewall 27, a second firewall 28.
The first server may be connected to the first apc through a first firewall, or the first server may be connected to the second apc through a first firewall; similarly, the second server is connected to the first apc through a second firewall, or the second server is connected to the second apc through a second firewall.
The first apc is coupled to at least one first distributed controller and the second apc is coupled to at least one second distributed controller.
As is clear from the figure, the first apc, the second apc, the first distributed controller, and the second distributed controller are all disposed under the first firewall or the second firewall and are isolated from the first server and the second server by the firewall, and the apc and the distributed controllers are disposed at the same process control layer, and data interaction is implemented by the internal communication protocol.
The application discloses chemical process control system includes: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system, the real-time data stored by the server is acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the chemical process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem that the communication efficiency is low due to data communication through an OPC communication protocol between the systems is solved.
The embodiment discloses a chemical process control system, a schematic structural diagram of which is shown in fig. 3, and the system comprises:
a distributed controller 31, a server 32, an apc 33 and an operation unit 34.
In addition to the same structure as the previous embodiment, the present embodiment is added with an operation unit 34.
The operation unit is used for receiving input operation and directly sending an input instruction corresponding to the input operation to the advanced process controller, or sending the input instruction corresponding to the input operation to the advanced process controller through the server.
Specifically, the operation units are disposed outside the firewall, i.e., outside the firewall of the process control layer composed of the distributed controller and the advanced process controller, i.e., the operation units are disposed at a different level from the process control layer.
The operation unit needs to communicate with the apc through a firewall, or first through a server and then through a firewall.
In addition, the operation units may communicate with the decentralized controller, and the decentralized controller and the advanced process controller may be controlled by the same operation unit or may be controlled by different operation units.
Further, the operation unit may directly obtain the first control data of the apc or obtain the first control data of the apc through the control data of the apc stored in the server.
The operation unit can directly access the control data of the advanced process controller, and can also access the control data through a server which stores the control data of the advanced process controller; similarly, the operating unit may directly access the real-time data of the distributed controller, or may access the real-time data through a server storing the control data of the distributed controller.
Further, the chemical process control system disclosed in this embodiment may further include: the monitoring unit, the schematic structural diagram of which is shown in fig. 4, includes:
a distributed controller 41, a server 42, an apc 43, an operation unit 44 and a monitoring unit 45.
The monitoring unit 45 is configured to obtain second control data in the control data of the apc stored in the server, and monitor the second control data; alternatively, the monitoring unit 45 obtains second control data of the apc stored in the server, and adjusts the control data of the apc according to the second control data.
That is, the monitoring unit 45 is different from the operation unit in that it can only obtain the second control data through the control data stored in the server, but cannot obtain the first control data through the control data stored in the server as described in the operation unit, or directly obtain the first control data of the apc.
Similarly, the monitoring unit may also obtain real-time data of the distributed controller stored in the server, and monitor the real-time data, or adjust the distributed controller according to the real-time data.
Further, the apc is further configured to: the method comprises the steps of directly obtaining real-time data obtained by a distributed controller, determining a processing result after analyzing and processing the real-time data, and directly sending the processing result to the distributed controller so that the distributed controller directly obtains the processing result.
That is to say, the advanced process controller can not only obtain the real-time data obtained by the distributed controllers stored in the server, but also directly obtain the real-time data from the distributed controllers without obtaining the real-time data from the server, and the data interaction between different servers on the same layer reduces the communication time and improves the communication efficiency.
In addition, it should be noted that the advanced process controller may also be disposed on the same layer as the server, that is, the advanced process controller and the DCS system operate in parallel. When the advanced process controller and the server are arranged on the same layer, the advanced process controller acquires real-time data of the distributed controllers stored by the server, a firewall does not need to be passed, and the time of data interaction is reduced through communication on the same layer.
The application discloses chemical process control system includes: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system, the real-time data stored by the server is acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the chemical process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem that the communication efficiency is low due to data communication through an OPC communication protocol between the systems is solved.
The embodiment discloses a chemical process control method applied to an advanced process controller, a flow chart of which is shown in fig. 5, and the method comprises the following steps:
step S51, acquiring real-time data which are acquired by the distributed controllers stored in the server and are sent to the server;
and step S52, after analyzing and processing the real-time data, determining a processing result, and directly sending the processing result to the decentralized controller so that the decentralized controller directly obtains the processing result, wherein the decentralized controller and the advanced process controller are jointly arranged on a process control layer of the chemical process control system.
The distributed controller is a DCS distributed controller, and the advanced process controller is an APC advanced process controller.
The distributed controller and the advanced process controller are integrated in one control system, and data communication between the distributed controller and the advanced process controller can be realized only through a communication protocol in the control system, so that the problem that when the APC and the DCS are two independent control systems, an independent communication protocol needs to be established between the two independent systems to realize the data communication between the two systems is avoided.
Integrate decentralized controller and advanced process controller in a control system, the real-time data that obtains through server storage decentralized controller, when advanced process controller APC needs to handle real-time data, obtain the real-time data that decentralized controller stored to the server from the server, and after advanced process controller APC carries out data processing inside, send the processing result to decentralized controller DCS through the inside communication protocol of system directly, this process need not through other devices, also need not through other communication protocols, directly adopt the inside special communication protocol of system, if: the Profibus protocol enables compatibility to be better and safety to be higher in the data interaction process, and in addition, the data interaction speed in the same system is higher than that between systems.
In addition, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the control system, so that the advanced process controller and the distributed controller are directly transmitted with data in the same layer in the system without communicating with an upper layer unit, data exchange is more direct, the field industrial control process is better met, and data interaction through an internal communication protocol is realized.
Further, the chemical process control system disclosed in this embodiment may further include: a firewall.
The firewall is arranged between the process control layer formed by the advanced process controller and the distributed controller and the layer where the server is located, so that when the advanced process controller or the distributed controller is in data communication with the upper layer, data transmission can be realized only after the firewall is used for carrying out safety detection, and the safety of the system is improved; and the data communication between the advanced process controller and the distributed controller is directly realized through an internal communication protocol without a firewall, so that the transmission efficiency is improved, and the data exchange is more direct.
The distributed controllers may be plural, the servers may be plural, and the advanced process controllers may be plural. The servers and the apc may be in a one-to-one correspondence relationship or in a one-to-many correspondence relationship, that is, one server corresponds to one apc or one server corresponds to a plurality of apc; each apc may also correspond to one or more decentralized controllers.
As shown in fig. 2, includes: a first decentralized controller 21, a second decentralized controller 22, a first apc 23, a second apc 24, a first server 25, a second server 26, a first firewall 27, a second firewall 28.
The first server may be connected to the first apc through a first firewall, or the first server may be connected to the second apc through a first firewall; similarly, the second server is connected to the first apc through a second firewall, or the second server is connected to the second apc through a second firewall.
The first apc is coupled to at least one first distributed controller and the second apc is coupled to at least one second distributed controller.
As is clear from the figure, the first apc, the second apc, the first distributed controller, and the second distributed controller are all disposed under the first firewall or the second firewall and are isolated from the first server and the second server by the firewall, and the apc and the distributed controllers are disposed at the same process control layer, and data interaction is implemented by the internal communication protocol.
Further, the chemical process control system may further include: and the operation unit is used for receiving input operation and directly sending an input instruction corresponding to the input operation to the advanced process controller, or receiving the input operation and sending the input instruction corresponding to the input operation to the advanced process controller through the server.
Specifically, the operation units are disposed outside the firewall, i.e., outside the firewall of the process control layer composed of the distributed controller and the advanced process controller, i.e., the operation units are disposed at a different level from the process control layer.
The operation unit needs to communicate with the apc through a firewall, or first through a server and then through a firewall.
In addition, the operation units may communicate with the decentralized controller, and the decentralized controller and the advanced process controller may be controlled by the same operation unit or may be controlled by different operation units.
Further, the operation unit may directly obtain the first control data of the apc or obtain the first control data of the apc through the control data of the apc stored in the server.
The operation unit can directly access the control data of the advanced process controller, and can also access the control data through a server which stores the control data of the advanced process controller; similarly, the operating unit may directly access the real-time data of the distributed controller, or may access the real-time data through a server storing the control data of the distributed controller.
Further, the chemical process control system may further include: monitoring unit
The monitoring unit is used for acquiring second control data in the control data of the advanced process controller stored in the server and monitoring the second control data; alternatively, the monitoring unit 45 obtains second control data of the apc stored in the server, and adjusts the control data of the apc according to the second control data.
That is, the monitoring unit is different from the operation unit in that it can only obtain the second control data through the control data stored in the server, but cannot obtain the first control data through the control data stored in the server as described in the operation unit, or directly obtain the first control data of the apc.
Similarly, the monitoring unit may also obtain real-time data of the distributed controller stored in the server, and monitor the real-time data, or adjust the distributed controller according to the real-time data.
Further, the apc is further configured to: the method comprises the steps of directly obtaining real-time data obtained by a distributed controller, determining a processing result after analyzing and processing the real-time data, and directly sending the processing result to the distributed controller so that the distributed controller directly obtains the processing result.
That is to say, the advanced process controller can not only obtain the real-time data obtained by the distributed controllers stored in the server, but also directly obtain the real-time data from the distributed controllers without obtaining the real-time data from the server, and the data interaction between different servers on the same layer reduces the communication time and improves the communication efficiency.
In addition, it should be noted that the advanced process controller may also be disposed on the same layer as the server, that is, the advanced process controller and the DCS system operate in parallel. When the advanced process controller and the server are arranged on the same layer, the advanced process controller acquires real-time data of the distributed controllers stored by the server, a firewall does not need to be passed, and the time of data interaction is reduced through communication on the same layer.
The application discloses a chemical process control method, includes: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system, the real-time data stored by the server is acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the chemical process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem that the communication efficiency is low due to data communication through an OPC communication protocol between the systems is solved.
The embodiment discloses a chemical process control method applied to a decentralized controller, and a flow chart of the chemical process control method is shown in fig. 6, and the chemical process control method comprises the following steps:
step S61, acquiring real-time data, and sending the real-time data to a server for storage;
and step S62, directly obtaining a processing result sent by the advanced process controller, wherein the processing result is determined after the advanced process controller performs analysis processing according to the real-time data stored by the server, and the analysis controller and the advanced process controller are jointly arranged in a process control layer of the chemical process control system.
The control process of the chemical process control method disclosed in this embodiment is the same as that of the above embodiment, and is not described herein again.
The application discloses a chemical process control method, includes: the distributed controller acquires real-time data, the server stores the real-time data acquired by the distributed controller, the advanced process controller and the distributed controller are jointly arranged on a process control layer of the chemical process control system, the real-time data stored by the server is acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result. According to the scheme, the advanced process controller and the distributed controller are arranged on the process control layer of the chemical process control system together, the advanced process controller and the distributed controller are arranged in the same system and the same process control layer, data interaction is carried out through a general communication protocol in the same system, the communication efficiency and the communication safety are improved, and the problem that the communication efficiency is low due to data communication through an OPC communication protocol between the systems is solved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A chemical process control system, comprising:
the distributed controller is used for acquiring real-time data;
a server for storing the real-time data acquired from the distributed controller;
the advanced process controller and the decentralized controller are arranged on a process control layer of the chemical process control system together, data transmission between the advanced process controller and the decentralized controller is achieved, the advanced process controller and the decentralized controller are used for acquiring the real-time data stored by the server, determining a processing result after analyzing and processing the real-time data, and directly sending the processing result to the decentralized controller, so that the decentralized controller directly acquires the processing result, and the communication efficiency and the communication safety are improved;
and the firewall is arranged between a process control layer formed by the advanced process controller and the distributed controller and a layer where the server is located, so that data communication between the advanced process controller and the distributed controller is directly realized through an internal communication protocol without passing through the firewall.
2. The system of claim 1, further comprising:
and the operation unit is used for receiving input operation and directly sending an input instruction corresponding to the input operation to the advanced process controller or sending the input instruction to the advanced process controller through the server.
3. The system of claim 2,
the operation unit is further configured to: the first control data of the apc is directly obtained, or the first control data of the apc is obtained through the control data of the apc stored in the server.
4. The system of claim 1, further comprising:
the monitoring unit is used for acquiring second control data in the control data of the advanced process controller stored by the server and monitoring the second control data;
or the like, or, alternatively,
and the monitoring unit is used for acquiring second control data in the control data of the advanced process controller stored by the server and adjusting the control data of the advanced process controller according to the second control data.
5. The system of claim 1, wherein,
the apc is further configured to: the real-time data acquired by the distributed controller is directly acquired, a processing result is determined after the real-time data is analyzed and processed, and the processing result is directly sent to the distributed controller, so that the distributed controller directly acquires the processing result.
6. A chemical process control method is applied to an advanced process controller and is characterized by comprising the following steps:
acquiring real-time data which is acquired by a distributed controller and stored in a server and is sent to the server;
after the real-time data are analyzed and processed, a processing result is determined, and the processing result is directly sent to the decentralized controller, so that the decentralized controller directly obtains the processing result, wherein the decentralized controller and the advanced process controller are jointly arranged on a process control layer of a chemical process control system, data transmission between controllers on the process control layer is realized, and communication efficiency and communication safety are improved;
and a firewall is arranged between a process control layer formed by the advanced process controller and the distributed controller and a layer where the server is located, so that data communication between the advanced process controller and the distributed controller is directly realized through an internal communication protocol without passing through the firewall.
7. The method of claim 6, further comprising:
and directly acquiring the real-time data acquired by the distributed controller.
8. A chemical process control method is applied to a decentralized controller and is characterized by comprising the following steps:
acquiring real-time data, and sending the real-time data to a server for storage;
directly acquiring a processing result sent by an advanced process controller, wherein the processing result is determined after the advanced process controller performs analysis processing according to the real-time data stored by the server, and the decentralized controller and the advanced process controller are jointly arranged on a process control layer of a chemical process control system, so that data transmission between controllers on the process control layer is realized, and the communication efficiency and the communication safety are improved;
and a firewall is arranged between a process control layer formed by the advanced process controller and the distributed controller and a layer where the server is located, so that data communication between the advanced process controller and the distributed controller is directly realized through an internal communication protocol without passing through the firewall.
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