WO2016157354A1 - Système de contrôle de commande et système informatique - Google Patents

Système de contrôle de commande et système informatique Download PDF

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Publication number
WO2016157354A1
WO2016157354A1 PCT/JP2015/059886 JP2015059886W WO2016157354A1 WO 2016157354 A1 WO2016157354 A1 WO 2016157354A1 JP 2015059886 W JP2015059886 W JP 2015059886W WO 2016157354 A1 WO2016157354 A1 WO 2016157354A1
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Prior art keywords
controller
request
control
master
monitoring
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PCT/JP2015/059886
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English (en)
Japanese (ja)
Inventor
横田　大輔
清水　勝人
貴之 亀田
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株式会社日立製作所
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Priority to PCT/JP2015/059886 priority Critical patent/WO2016157354A1/fr
Priority to JP2017508879A priority patent/JPWO2016157354A1/ja
Publication of WO2016157354A1 publication Critical patent/WO2016157354A1/fr

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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
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the present invention relates to a multi-system control and monitoring system composed of computers that control or monitor an object to be controlled, and particularly suitable for adding a new computer system to an existing multi-system control and monitoring system. It relates to the monitoring system.
  • a multi-system control monitoring system configured to control or monitor a controlled object has been configured.
  • a new computer system for control and monitoring purposes or an information-related computer system is added to these existing control and monitoring systems. These are the case where a plurality of control monitoring systems are linked to form a larger system, or the case where an existing control monitoring system is linked to an information processing system other than the control monitoring system, for example.
  • linkages are realized by connecting a new computer system to a communication network in an existing control and monitoring system via a relay device (gateway device), but between servers and controllers configured with computers of each system. Communication and information sharing are required.
  • Patent Document 1 discusses an information distribution control method that realizes efficient promotion of data distribution in a system against an increase in data access from an additional information system to an existing control system. According to this method, a data transmission method using cyclic communication has been proposed that can allocate data access required by the additional information system when necessary.
  • an additional information system that implements a maintenance service or the like may issue a request to the control device of an existing control and monitoring system to acquire any data or signals that the control device has during operation of the control and monitoring system. is there. Further, when the target control device has a redundant configuration, a request may be issued to acquire data and signals from the control device according to the status of the main system and the sub system.
  • the main control device among the control devices having a redundant configuration monitors and controls the flow rate of the liquid flowing through the pipe on the control target side.
  • the slave control device monitors the flow rate of the liquid flowing through the pipe on the control target side.
  • the newly added information system device acquires data from the primary and secondary control devices having a redundant configuration, and the flow rate measured by the primary control device and the flow rate measured by the secondary control device. Therefore, the function of monitoring the error of the measured values of the multiple control devices themselves constituting the control monitoring system is achieved. Or in order to confirm the soundness of a subordinate control apparatus, it has functions, such as acquiring the data of a failure state.
  • the slave device may have a lower processing load on the control device than the master system, and may process more requests from the information device.
  • the conventional method has a low processing efficiency of the request without considering the acquisition request and the change of the load by the main system and the slave system of the control device.
  • an object of the present invention is to provide a control monitoring system suitable for adding and operating a new computer system to an existing multi-system control monitoring system.
  • a control monitoring system in which communication is performed between a control console provided on a monitoring control network and a plurality of controllers, and each controller is configured as a primary system and a secondary redundant system;
  • Each controller is composed of a gateway system connected to the monitoring control network and a computer system including a human interface device, and each controller configured as a primary and secondary redundant system is connected to the primary and secondary field terminals respectively.
  • a control and monitoring system configured to perform supervisory control, The gateway device changes the first request message from the human interface device to the second request message and transmits it to the controller via the monitoring control network, and the controller uses the monitoring request for monitoring control in response to the second request message.
  • the first response message sent back via the network is changed to a second response message and transmitted to the human interface device.
  • the gateway device determines the requested controller from the data name indicated in the request for the first request message from the supervisory control network, and the processing amount aggregated for each master and slave controller is the maximum for each controller. It is characterized by generating and outputting a second request message after confirming that the processing performance is not exceeded.
  • the above processing allows the processing performance of the master / slave control device to be used to the limit, and the processing efficiency of the acquisition request can be increased.
  • FIG. The figure which shows the structure of the response message B (measurement control signal S6) which the gateway apparatus GW receives from the controller C.
  • FIG. The figure which shows the memory content structure of database DBG1.
  • FIG. 1 shows an example of a control monitoring system to which the present invention is applied.
  • the control monitoring system of FIG. 1 shows a configuration in which a new computer system SN is added to an existing multi-system control monitoring system SO.
  • the existing multi-system control and monitoring system SO is configured by connecting a control console T and a computer (hereinafter referred to as a controller) C used by an operator on a monitoring and control LAN (network NWO).
  • the controller C is configured in a multiplex system, and in the example shown in the figure, a multiplex system controller having a redundant configuration of C1m and C1s and C2m and C2s is configured.
  • a controller that operates normally is called a master system
  • a controller that operates in place of the master system when the master system cannot operate due to a failure or the like is called a slave system.
  • C1m is one set of master controllers
  • C1s is one set of slave controllers
  • C2m is two sets of master controllers
  • C2s is two sets of slave controllers. There may be one or a plurality of sets of controllers constituting these redundant systems.
  • the field terminals O are connected to these controllers C, respectively.
  • the on-site terminal O is a terminal including an operation end that operates in response to a signal from the controller C, or a terminal including a measuring instrument that transmits a detected flow rate or the like.
  • the field terminal O is also multiplexed in accordance with the controller C. Therefore, O1m is one set of master field terminals, O1s is one set of slave field terminals, O2m is two sets of master field terminals, and O2s is 2 It is a pair of subordinate field terminals. Thereby, the field terminals O1m and O1s perform the same operation and perform the same measurement.
  • the on-site terminals O2m and O2s perform the same operation and perform the same measurement.
  • the newly added computer system SN is connected to the monitoring control network NWO of the control monitoring system SO via a relay device (gateway device) GW.
  • the human interface device HMI includes input / output devices such as a monitor and a keyboard. Since the human interface device HMI may be prepared for each operator, in many cases, a network NWN is interposed between the human interface device HMI and the gateway device GW.
  • FIG. 2 is a diagram showing an example of a specific control monitoring system that can be realized by the present invention.
  • This figure shows a processing example in one set of master-slave controllers C1m, C1s, one set of master-slave field terminals O1m, O1s, and the human interface device HMI.
  • the set of master-slave site terminals O1m and O1s are terminals including measuring instruments that detect and transmit the flow rate of the pipe 63 on the site.
  • a set of master-slave controllers C1m and C1s receive the flow rate signals obtained at the field terminals O1m and O1s at their analog input capturing units AI1m and AI1s and transmit them to the human interface device HMI.
  • FIG. 2 shows a display example in the display operation means MO in the human interface device HMI.
  • a display column 1002 indicates that the display content is a pipe flow rate together with information such as a measurement location, and a pipe flow rate measurement value 1007 is displayed in a bar graph. Further, in this display example, the measured value 1007 of the flow rate measured by the main controller C1m is displayed on the display operation means MO, and the items 1002 such as the flow rate obtained by the analog input capturing units AI1m and AI1s in the controllers C1m and C1s are as follows: It is used as a unique data name in the control and monitoring system.
  • the data name 1002 is not only a name that designates a specific controller such as the flow rate obtained by the controllers C1m and C1s, but also a specific set of the master system and the slave system, and is the main system at that time. A name that specifies the controller should also be given.
  • FIG. 3 is a diagram showing a functional configuration of the human interface device HMI.
  • an operation instruction signal S1 using a keyboard or the like is obtained from an operator using the human interface device HMI, and an image signal S2 obtained by processing the obtained measurement control information is externally output to the display operation means MO.
  • the request signal S3 is issued from the transmitter SH to the existing monitoring control system SO side, and the measurement control signal S4 is obtained from the existing monitoring control system SO side.
  • the human interface device HMI has the following functions for transmitting and receiving various signals to and from the outside.
  • the human interface device HMI has a reception unit 100 that receives an instruction (operation instruction signal S1) from an operator and a request analysis unit 101 that analyzes a request from the operator for processing according to the operation instruction signal S1.
  • a request generation unit 102 that generates a communication request message A for transmitting a request to the gateway device GW, and a transmission unit SH that transmits the request message A as a request signal S3 to the network NWN.
  • the human interface device HMI performs a communication response message A (measurement control signal) such as a response from the controller C to the communication request message A (request signal S3) sent earlier for processing according to the measurement control signal S4.
  • a communication response message A such as a response from the controller C to the communication request message A (request signal S3) sent earlier for processing according to the measurement control signal S4.
  • display update unit 107 that retrieves from the DBH and updates the display
  • an external interface unit 109 that transmits display information to the display device are configured.
  • the accepting unit 100 includes an input device that can input the operation of the operator and an interface device with the input device.
  • an input device such as a switch, a keyboard, or a mouse
  • an interface device can be considered.
  • the request analysis unit 101 analyzes from the input of the reception unit 100 what the operation instruction of the operator is for the control monitoring system.
  • the human interface device HMI for example, analyzes the presence / absence of input in the request analysis unit 101 for the operation processing of the display operation means MO.
  • FIG. 4 is a diagram showing a request message A (request signal S3) transmitted from the human interface device HMI to the gateway device GW.
  • the request message A (request signal S3) from the human interface device HMI is the request destination device name S31 (in this case, the gateway device GW) that is the destination device name of the request message A, and the source device name.
  • Request source device name S32 in this case, human interface device HMI
  • request type S33 in this case, master-slave type S34
  • data name S35 to be acquired in this case, for example, the flow rate of the pipe, and there are a plurality of data names to be acquired
  • an access frequency S36 in the case of requesting that data be automatically returned to the request source at a regular frequency.
  • the access frequency S36 is a content that can calculate the load of the control monitoring LAN (network NWO) and the controller C, such as the number of requests per unit time and the throughput. You may specify more than one. For example, if the access frequency is different from 13:00 to 14:00 in one day, the contents are the access frequency in the time zone and the access frequency other than the time zone.
  • the input of the access frequency S36 specifies how many times the acquisition of the data from the controller C is requested per unit time.
  • the request type S33 stores the type of whether the acquisition request is “registered” or “deleted”. “Registration” is a case where a new request for data acquisition at the access frequency S36 is newly obtained. “Registration deletion” is a case where a request for which data acquisition at the access frequency S36 is designated is canceled in the subsequent processing.
  • the master / slave type S34 stores which of the master system and the slave system is specified.
  • the data name S35 when only a specific controller is specified and the main system and the sub system are not specified, nothing is stored in the main / sub class S34.
  • the request destination device name S31 and the request source device name S32 can be a host name or an IP address.
  • the request message A (request signal S3) is generated in the request generation unit 102 shown in FIG. 3.
  • the request generation unit 102 sets the preset device name of the gateway device GW as the request destination device name S31.
  • the device name of the human interface device HMI is stored in the request source device name S32, and the data to be acquired is stored in the data name S35.
  • the request generation unit 102 stores a preset value in the access frequency S36 column. For example, the acquisition of the control output value used for the control output display is set from the display update frequency of the control output display.
  • FIG. 5 is a diagram showing a response message A (measurement control signal S4) received by the human interface device HMI from the gateway device GW.
  • the response message A (measurement control signal S4) is the request source device name S41 (in this case, the human interface device HMI) that is the name of the device that has requested the response message A, and the name of the device that has responded to the response message A.
  • the response source device name S42 (in this case, the gateway device GW), the response time S43 that is the time when the response message A is returned, and the request data S44 that is a value corresponding to the data name S35 that is desired to be acquired.
  • the request data S44 is data S441 corresponding to the data name such as the data name S35 to be acquired, the sampling time S442 that is the time when the data S441 is acquired, and the cycle at which the data S441 is acquired. It is composed of a certain sampling period S443.
  • the response message A (measurement control signal S4) is received by the reception processing unit 104 shown in FIG. 3.
  • the reception processing unit 104 stores the request data S44 of the response message A in the display database DBH.
  • the display update unit 107 changes the display using the stored request data S44. For example, the display update unit 107 changes the bar graph display of the flow rate measurement value 1007 in FIG.
  • FIG. 6 is a diagram illustrating a functional configuration of the gateway device GW.
  • the gateway device GW obtains a communication request message A (request signal S3) from the human interface device HMI, and modifies the obtained communication request message A (request signal S3) to obtain a communication request message B (request signal S5). ) To the controller C. Further, the gateway apparatus GW converts the communication response message B (measurement control signal S6) obtained from the controller C into a communication response message A (measurement control signal S4), and then sends it to the human interface apparatus HMI.
  • a communication request message A (request signal S3) from the human interface device HMI
  • the gateway apparatus GW converts the communication response message B (measurement control signal S6) obtained from the controller C into a communication response message A (measurement control signal S4), and then sends it to the human interface apparatus HMI.
  • the communication request message A (request signal S3) received by the gateway device GW is as shown in FIG. 4, but the communication request message B (request signal S5) transmitted by the gateway device GW by modifying this is shown. ) Is as shown in FIG.
  • the difference between FIG. 4 and FIG. 7 represents the modification contents in the gateway device GW.
  • the request message B includes a request destination device name S51 (for example, the controller C1m) that is the destination device name of the request message B and a request source device name S52 (the source device name).
  • the gateway device GW the request type S53, the master / slave type, or the master / slave type S54 indicating when to respond to the master / slave, and the device to read the data to be read What is the read request data address S55 that is an address, the access frequency S56 when requesting the data to be automatically returned to the request source at a regular frequency, and the read request data S55 of the response message B when there are a plurality of read requests? It is comprised with the allocation address S57 which shows whether it stores in the second.
  • the request type S53 stores the type of “registration” or “deletion” of the acquisition request.
  • the request message B is modified from the request message A as follows.
  • the request destination device name S51 for example, the controller C1m
  • the request source device name S52 gateway device GW
  • the information of the request type S53, the master / slave type S54, and the access frequency S56 is inherited as it is, the allocation address S57 is newly added, and the read request data address S55 is generated and added based on the data S35 to be acquired.
  • FIG. 8 shows an example of the data configuration of the communication response message B (measurement control signal S6) transmitted to the gateway device GW as a result of the controller C receiving the request message B operating. Yes.
  • the response message B includes a request source device name S61 (gateway device GW) that is the name of the device that has requested the response message B, and a response source device name S62 (for example, the controller C1m) that is the name of the device that has responded to the response message B.
  • the read request data S63 which is the data stored in the read request data address S55 of the request message B, and the master / slave state S64 for storing the master / slave status. Further, the read request data S63 includes data S6311 which is data corresponding to the read request data address S55 of the request message B, a sampling time S6312 which is the time when the data S6311 is acquired, and a sampling period S6313 which is the period when the data S6311 is acquired. It consists of
  • the response message B having the configuration shown in FIG. 8 is modified to the response message A having the configuration shown in FIG.
  • the contents of this modification are as follows. First, the request source device name S41 (in this case, the human interface device HMI) and the response source device name S42 (the gateway device GW) are replaced from the standpoint of the gateway device GW.
  • the plurality of read request data S63 of the response message B is distributed for each requesting requesting apparatus, and the content of the read request data S63 is maintained as it is.
  • the response message A is newly given a response time S43.
  • the master-slave state S64 is appropriately deleted because it is unnecessary information in the human interface device HMI.
  • the gateway apparatus GW shown in FIG. 6 has various database DBs in order to enable modification of the data configuration between input and output signals. A large amount of data is accumulated in the database DB and used while being updated as appropriate.
  • the database used here is as follows.
  • the data name S35 (see FIG. 4) to be acquired described in the communication request message A (request signal S3) is stored in which address of which apparatus (controller C). It is a database for address management that manages whether or not.
  • the address management database DBG1 has a request data name DBG11 which is an identifier used in the data name S35 to be acquired and a request destination indicating a controller C having data corresponding to the request data name DBG11. It comprises a device DBG12 and a request name DBG13 which is an identifier viewed from the data request destination device DBG12.
  • the address management database DBG1 is a fixed content database as long as there is no change in the entire system.
  • FIG. 10 is a diagram showing the storage contents of the performance database DBG2 storing the maximum processing performance of the controllers C1m and C1s and the control monitoring LAN (network NWO).
  • the performance database DBG2 refers to the gateway device GW when rejecting the request message A (request signal S3) based on the information of the access frequency S36 (FIG. 4).
  • the performance database DBG2 includes a target DBG 21 that identifies a management target, a maximum processing performance DBG 22 that is the maximum processing performance of the management target DBG 21, and a maximum processing performance in a state where the controller is a primary system, a secondary system, a primary system, and a secondary system. This is composed of a master-slave type DBG 23 that stores the type when the change is made.
  • the performance database DBG2 is a fixed content database as long as there is no change in the entire system.
  • the target DBG 21 stores a request destination device name or a name indicating a control monitoring LAN (network NWO).
  • a control monitoring LAN network NWO
  • a correspondence table between the request destination device name and the control and monitoring LAN network NWO is prepared.
  • the control monitoring LAN (network NWO) to be targeted is listed.
  • the maximum processing performance DBG 22 stores the number of requests per unit time.
  • the maximum processing performance DBG 22 may be expressed more finely than the number of requests per unit time. For example, it may be different for each reading or data name to be read, and the length of the request message B or the response message B may be used. Furthermore, it may be different for each time. For example, the maximum processing performance may be different between the first 2 seconds of the 10-second cycle and the subsequent 8 seconds.
  • the secondary controller C1s is on the standby side, and only the monitoring function is executed.
  • the processing time has a large margin compared to the main controller C1m that performs monitoring and control.
  • the maximum processing performance in the case where the slave controller C1s performs new processing is capable of processing 200 requests per unit time, whereas the maximum processing performance of the master controller C1m with no processing time available. This means that only 50 requests can be processed per unit time.
  • FIG. 11 shows an example of a request database DB that manages requests made by the gateway device GW to the controllers C1m and C1s and from which human interface device HMI the request is requested.
  • FIG. 6 shows one set of master request database DBGm and subordinate request database DBGs. If there are a plurality of sets of controllers, they are similarly used for one set of master database.
  • a request database DBGm and a subordinate request database DBGs are prepared and managed in the same manner. Further, as will be described separately with reference to FIG. 13, the request databases DBG configured in the same way in the controllers C1m and C1s are prepared and operated for the main system and the slave system. However, in this case, only a request database DBC for data handled by the controller is provided.
  • the main request database DBGm will be described as a representative example.
  • These request databases DBGm are included in the request message and the request destination DBGm1 indicating which controller C has the data requested by the request message A.
  • the read data name DBGm2 in which the read request data address is stored, the request source device name S32 of the request message or the request source DBGm3 in which the request source device name (gateway device GW) is stored, and the access frequency requested in the request message S36 or an access frequency DBGm4 for storing the access frequency and an allocation address DBGm5.
  • the master-slave state database DBG3 is a database that stores whether each controller of a redundant controller set is a master or a slave.
  • the master-slave state database DBG3 is a fixed content database as long as there is no change in the entire system.
  • FIG. 12 is a diagram showing the P database DBG4 in which the gateway device GW stores the contents of the write request data and the read request data stored in the response message B received from the controllers C1m and C1s.
  • the P database DBG4 includes a request destination DBG 41 that identifies the controllers C1m and C1s that have acquired data, and a data item DBG42 that is the name and value of the data. There may be a plurality of data items DBG42.
  • the gateway device GW provided with the above-described various databases DB for transmitting / receiving various signals to / from the outside has the following functional configuration.
  • the gateway device GW receives the request message A from the network NWN for the processing according to the communication request message A (request signal S3), and the data name indicated in the request message A request.
  • the master / slave registration / deletion unit 219 that deletes the request from the request database DBGs, and the controllers C1m and C2m when the request message A is the master and the controllers C1s and C2s when the request message A is the slave Below the maximum processing performance stored in the performance database DBG2
  • a master / slave performance confirmation unit 203 that confirms whether the request message A is requested from which human interface device HMI to which data of which controller 3 is registered in the request databases DBGm and DBGs, and the request is the request database DBDBGm. , Confirms whether it is registered in the DBGs, and if registered, generates a request message B corresponding to the requested device, and transmits the request message B to the control monitoring LAN (network NWO). It is comprised from the transmission part SG.
  • the request destination confirmation unit 201 requests the request destination devices of all controllers that may become the master or slave included in the set of controllers.
  • the name DGB12 is acquired from the address management database DBG1 (FIG. 9).
  • the request deletion determination unit 202 determines whether the request type S33 (FIG. 4) of the request message A is “registration” or “registration deletion”, and branches the process to the master-slave performance confirmation unit 203 or the master-slave registration deletion unit 219, respectively. When “registration”, the process of the master-slave performance confirmation unit 203 is executed, and when “registration deletion”, the process of the master-slave registration deletion unit 219 is executed.
  • the master-slave performance confirmation unit 203 does not exceed the maximum processing performance stored in the performance database DBG2 by requesting the request message A from the request-destination device, regardless of whether the request-destination device is in the master system or the slave system. To check.
  • the master-slave performance confirmation unit 203 extracts lines where the request destination device name of the request message A matches the request destination DBGm1 for each of the master request database DBGm and the slave request database DBGs, totals the processing amount, When the master / slave type S34 of the request message A is primary or not specified, in addition to the total amount of the master request database DBGm, when the master / slave type S34 is subordinate, the total amount of the slave request database DBGm In addition, it is confirmed whether neither exceeds the maximum processing performance DBG22 of the performance database DBG2. If exceeded, the processing of the request message A ends.
  • the request registration unit 204 registers the request message A in the master request database DBGm when the master / slave type S34 is the master, and registers it in the slave request database DBGs when the master / slave type S34 is the slave. If the master / slave type S34 is not specified, the master / slave type S34 is registered in both the master request database DBGm and the slave request database DBGs.
  • the processing in the master-slave performance confirmation unit 203 described above is to aggregate the processing amount for each master-slave using the request database DBG, and does not modify the storage content of the request database DBG.
  • the processing in the request registration unit 204 finally determines the storage contents of the request database DBG.
  • the request generation unit 205 generates a request message B to be transmitted from the gateway device GW to the request destination device from the request message A.
  • the generated request message B is as shown in FIG. 7, and the modification status from the request message A in the gateway apparatus GW is also as shown in FIG.
  • the gateway device GW has the following configuration for processing to receive the response message B from the controller C and send the response message A.
  • the gateway device GW stores the response from the controllers C1m and C1s from the control monitoring LAN (network NWO), the P database DBG4 that records the data received from the controllers C1m and C1s, and the response stored in the response
  • the request source that should respond from the reception processing unit 213 that stores data in the P database DBG4 and the request source DBGm3 of the request databases DBGs and DBGm is acquired, and necessary data is read from the read data name DBGm2 to the read request source from the P database DBG4.
  • the request source-specific response generation unit 215 operates mainly, and for each row registered in the master request database DBGm, whether the request destination DBGm1 is the master or slave is the master / slave state database DBG3. If it is the main system, a value corresponding to the read data name DBGm2 is acquired from the data item DBG42 of the P database DBG4, and a response message addressed to the request source DBGm3 is generated with the access frequency DBGm4. Similarly, the request source response generation unit 215 generates a response message for the slave request database DBGs when the request destination DBG 41 is a slave.
  • the request source specific response generation unit 215 generates the response message A to be transmitted from the gateway device GW to the human interface device HMI in this way from the response message B.
  • the generated response message A is as shown in FIG. 5, and the modification status from the response message B in the gateway apparatus GW is also as shown in FIG.
  • FIG. 13 shows a specific configuration of the controller C.
  • the controller C roughly receives two types of signals and transmits two types of signals.
  • One of the transmission and reception is executed in the existing multiplex control and monitoring system SO, and the other transmission and reception is executed in the added computer system SN.
  • the controller in FIG. 13 is set as either the primary system or the secondary system constituting the redundant system, and therefore, in the following description, this controller will be described as the main system.
  • monitoring control that is programmed in advance is mainly executed in the existing multi-system control monitoring system SO.
  • the control monitoring operation unit 321 passes the analog output unit AO or the digital output unit DO from the process output processing unit 322 in order to control the flow rate of the pipe 63 on the site to a predetermined amount. Then, a control signal is transmitted to a control valve (not shown) of the site terminal O.
  • control monitoring arithmetic unit 321 measures the flow rate of the pipe 63 at the site by the measuring instrument terminals O1m and O1s, and acquires the data from the analog inlet part AI or the digital inlet part DI at a determined sampling cycle. Is taken in through. As described above, the control monitoring calculation unit 321 performs calculations based on the acquired data and data, and stores the stored analog inlet or digital inlet in the memory (work data unit) 330.
  • the request message B (request signal S5) having the data configuration shown in FIG. 7 is received from the gateway device GW, and the read request data address S55 of the received request message B, etc.
  • the memory (work data section) 330 is referred to obtain the data described in FIG. 8, and the response message B (measurement control signal S6) having the data structure shown in FIG. 8 is created and returned based on the data described here. To do.
  • the controller C further includes the following configuration for processing in the added computer system SN.
  • a receiving unit 327 that receives a request message B from the gateway apparatus GW via the control monitoring LAN (network NWO), and registers or deletes the request in the master request database DBCm (or the slave request database DBCs). Controls the request registration / deletion unit 323, the response generation unit 324 that generates the response message B in response to the gateway device GW, and reads the memory (work data unit) 330 instructed by the request.
  • a transmission unit 323 that transmits to the monitoring LAN (network NWO), a memory (work data unit) 330 that stores data from the control monitoring operation unit 321, and a master request database DBCm (or subordinate) that stores the request message B System request database DBCs) and main system or It has a state should operate in either state of the system, and a master-slave management unit 331 having a function of changing the state of the main system and the slave when a failure occurs the controller.
  • the request database DBC may be provided with either one.
  • FIG. 13 shows an example in which both are provided from the viewpoint of creating a controller as a standard.
  • the request registration / deletion unit 323 is a master request when the master / slave type S54 of the request message B in which the request type S53 of the request message B (request signal S5) is “registration” is the main system. Registered in the database DBCM, if the master-slave type S54 is a slave, it is registered in the slave request database DBCS. If the master-slave type S34 is not specified, the master request database DBGm and the slave request Register in both databases DBGs. The request registration / deletion unit 323 similarly deletes the request message B whose request type S53 is deletion.
  • the response generation unit 324 acquires from the master / slave management unit 331 whether the state is the master or slave, refers to the corresponding master request database DBCM or the slave request database DBCS, and corresponds to the read data name DBGm2. Data to be processed is acquired from the memory (work data section) 330, and a response message B to the request source DBGm3 is generated at the frequency of the access frequency 2108.
  • control monitoring LAN includes the existing signal format FO generated in the existing multi-system control monitoring system SO and the added computer system SN existing multi-system control.
  • the additional signal format FN generated in the monitoring system SO is transmitted together. For this reason, for example, the following may be applied to multiplying the additional signal format FN on the existing signal format FO.
  • FIG. 14 shows an example of the signal format F in the control monitoring LAN (network NWO).
  • the existing multi-system control and monitoring system SO often employs a polling system in which communicators are allocated and switched at regular time intervals between communication devices (the console T and a plurality of controllers).
  • the existing signal format FO in this case is, for example, a transmission frame FO1m between the console T and the controller C1m, a transmission frame FO1s between the console T and the controller C1s, a transmission frame FO2m between the console T and the controller C2m, It is composed of a table T and a transmission frame FO2s in the controller C2s to constitute one cycle TO.
  • Each transmission frame here has a fixed time interval, and includes a transmission / reception address AD, communication data DATA between each other, a spare (margin) time SP, and the like.
  • the time allocated for the communication data DATA between the transmission / reception address AD and each other is generally set to a fixed time length. Even if it is not a fixed time length, no signal is transmitted during the spare (margin) time SP, so that it is identified that the processing assigned to the address AD and the communication data DATA has been completed and the margin time has been reached. Is possible.
  • the time length (number of bits) set for the transmission of the former data DATA is the latter data FATA. It is longer than the time length (number of bits) set for transmission.
  • the former spare (margin) time SP (number of bits) is shorter than the latter spare (margin) time SP (number of bits).
  • the additional signal format FN is formed within this spare (margin) time SP.
  • the additional signal format FN in this case is, for example, a transmission frame FN1m between the gateway device GW and the controller C1m within the spare (margin) time SP1, and a transmission between the gateway device GW and the controller C1s within the spare (margin) time SP2.
  • the frame FN1s, the transmission frame FN2m between the gateway device GW and the controller C2m within the spare (margin) time SP3, and the transmission frame FO2s between the gateway device GW and the controller C2s are configured within the spare (margin) time SP4.
  • the maximum processing performance DBG22 set in the performance database DBG2 of FIG. 10 is determined in advance from the spare (margin) time SP for each controller.
  • an additional signal can be transmitted by the additional computer system using a spare time within each communication time zone.
  • the response generation unit 324 of the controllers C1m and C1s shown in FIG. 13 periodically transmits a response message B having a fixed number of read request data S63 regardless of the request message A.
  • the controller C1m, C1s requests the controller C1m, C1s to send a response message B, and the controller C1m, C1s periodically sends a response message B read request.
  • data corresponding to a request is stored in data S63.
  • the request registration unit 204 of the gateway device GW is an unallocated area of the read request data S63 of the response message B periodically transmitted from the allocation address DBGm5 of the master request database DBGm or the slave request database DBGs. Search and assign
  • the response generation unit 324 of the controllers C1m and C1s generates a response message B from the master request database DBCM or the slave request database DBCS according to the allocation address DBGm5 based on the read data name DBGm2, and does not depend on the access frequency DBGm4. It is generated at a preset period and transmitted via the transmission unit 323.
  • the reception processing unit 213 of the gateway device GW acquires the read data name of each read request data S63 of the response message B from the assigned address DBGm5 of the master request database DBGm or the slave request database DBGs, and the P database Data is stored in DBG4.
  • Example of this invention was concretely demonstrated based on the embodiment, it is not limited to this, A various change is possible in the range which does not deviate from the summary.

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  • Automation & Control Theory (AREA)
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Abstract

L'invention concerne un système de contrôle de commande comprenant: un système de contrôle de commande dans lequel une console de commande et une pluralité de dispositifs de commande sont fournis dans un réseau de commande de contrôle et communiquent les uns avec les autres, chacun des dispositifs de commande de ladite pluralité de dispositifs de commande étant configuré soit comme un système principal, soit comme un sous-système, formant ainsi des systèmes redondants; et un système informatique qui comprend un dispositif passerelle connecté au réseau de commande de contrôle et un dispositif d'interface humaine. Lorsque le dispositif passerelle modifie un premier message de demande reçu du dispositif d'interface humaine en un second message de demande et transmet le second message de demande à des dispositifs de commande par l'intermédiaire du réseau de commande de contrôle, le dispositif passerelle détermine les dispositifs de commande de destination sur la base d'un nom de données indiqué par la demande dans le premier message de demande et génère et fournit en sortie le second message de demande après vérification que la quantité totale de traitement devant être réalisé par chacun des dispositifs de commande de système principal et de sous-système qui constituent les dispositifs de commande de destination n'excède pas la performance de traitement maximale du dispositif de commande.
PCT/JP2015/059886 2015-03-30 2015-03-30 Système de contrôle de commande et système informatique WO2016157354A1 (fr)

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JP2017508879A JPWO2016157354A1 (ja) 2015-03-30 2015-03-30 制御監視システムおよび計算機システム

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007228059A (ja) * 2006-02-21 2007-09-06 Mitsubishi Electric Corp サイクリック通信によるデータ伝送方法及びデータ伝送システム
WO2014019942A1 (fr) * 2012-07-31 2014-02-06 E3 Cortex Conteneur hermetique et procede d'emballage mettant en oeuvre un tel conteneur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014199472A1 (fr) * 2013-06-12 2014-12-18 株式会社日立製作所 Système de surveillance de commande et procédé de surveillance de commande

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007228059A (ja) * 2006-02-21 2007-09-06 Mitsubishi Electric Corp サイクリック通信によるデータ伝送方法及びデータ伝送システム
WO2014019942A1 (fr) * 2012-07-31 2014-02-06 E3 Cortex Conteneur hermetique et procede d'emballage mettant en oeuvre un tel conteneur

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