CN104950832B - Steel plant's control system - Google Patents
Steel plant's control system Download PDFInfo
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- CN104950832B CN104950832B CN201510051341.6A CN201510051341A CN104950832B CN 104950832 B CN104950832 B CN 104950832B CN 201510051341 A CN201510051341 A CN 201510051341A CN 104950832 B CN104950832 B CN 104950832B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The present invention provides one kind in the case of network itself fail, and steel plant's control system of trouble location can be also determined with high robust.Steel plant's control system includes：The supervision object equipment being connected respectively with independent the first transmission path and the second transmission path；And the monitoring arrangement being connected respectively with the first transmission path and the second transmission path.Monitoring arrangement includes：Poll processing unit, the poll processing unit perform the first transmitting-receiving process and the second transmitting-receiving process, and first transmitting-receiving process is via the first transmission path to supervision object environment inquiry state, and second transmitting-receiving process is via the second transmission path to supervision object environment inquiry state；And Stateful Inspection processing unit, the combination of the inquiry result of inquiry result and second transmitting-receiving process of the Stateful Inspection processing unit based on the first transmitting-receiving process, judge that the first transmission path, the second transmission path, supervision object equipment are in normal/abnormal state respectively.
Description
Technical field
The present invention relates to steel plant's control system, more particularly to steel plant's control system including monitoring arrangement, the monitoring
Device monitors to the viability for carrying out the supervision object equipment (control device, the network equipment) of network connection.
Background technology
Conventionally, there is known following network monitoring device：I.e., SNMP (Simple Network Management are utilized
Protocol：Simple Network Management Protocol) collect supervision object equipment information, network is monitored.(the day of patent document 1
This patent JP 2003-244143 publications) in, it is proposed that remotely monitor control method：I.e., using SNMP poll, taking
In the case of obtaining multiple supervision object device fails and restoring information, efficiently supervision object device can be monitored.
In addition, as technology related to the present invention, the applicant has understood following record in addition to above-mentioned document
Document.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2003-244143 publications
Patent document 2：Japanese Patent Laid-Open 2007-189615 publications
The content of the invention
The technical problems to be solved by the invention
In the network monitoring device of patent document 1, using SNMP poll come obtain supervision object device fails and
The information of recovery, but in the case where the transmission path (network) to supervision object equipment room breaks down, monitoring can not be obtained
The information of object-based device.In this case, there is following problem：I.e., it can not learn that there occurs failure or prison for transmission path
Depending on object-based device, there occurs failure, it is impossible to is able adequately determines trouble location, the defect content of system.Especially with multiple monitoring pair
As equipment large scale network in, big problem can be turned into.
The present invention completes to solve the above problems, its object is to provide a kind of steel plant's control system,
In steel plant's control system with the supervision object equipment for carrying out network connection, even if network itself also can there occurs failure
Trouble location is determined with high robust.
Technical scheme used by solution technical problem
In order to achieve the above object, the first invention is steel plant's control system, and steel plant's control system includes：Respectively with
The supervision object equipment that the first independent transmission path is connected with the second transmission path；And transmit road with described first respectively
The monitoring arrangement that footpath is connected with second transmission path, it is characterised in that
The monitoring arrangement includes：
Poll processing unit, the poll processing unit perform the first transmitting-receiving process and the second transmitting-receiving process, first transmitting-receiving process
Via first transmission path to the supervision object environment inquiry state, second transmitting-receiving process is via the described second transmission
Path is to the supervision object environment inquiry state；And
Stateful Inspection processing unit, inquiry result and described of the Stateful Inspection processing unit based on first transmitting-receiving process
The combination of the inquiry result of two transmitting-receiving process, first transmission path, second transmission path, the monitoring are judged respectively
Object-based device is in normal condition or abnormality.
Second invention is characterised by, in the first invention,
The Stateful Inspection processing unit
At least one party in the inquiry result of first transmitting-receiving process and the inquiry result of second transmitting-receiving process
It is in the case of having response, is determined as that the supervision object equipment is in normal condition,
Both sides in the inquiry result of first transmitting-receiving process and the inquiry result of second transmitting-receiving process are
In the case of without response, it is determined as that the supervision object equipment is in abnormality.
3rd invention is characterised by, in the first or second invention,
The Stateful Inspection processing unit
It is that the inquiry result without response and second transmitting-receiving process is that have in the inquiry result of first transmitting-receiving process
In the case of response, it is determined as that first transmission path is in abnormality, and the supervision object equipment is in normal shape
State.
4th invention is characterised by, in any one of the first to the 3rd invention,
The supervision object equipment is the controller being controlled to the actuator of steel plant,
The controller includes storing the status information of this equipment and the common storage of error message,
The content of the common storage of the controller is via the 3rd transmission path and the share storage of the monitoring arrangement
Device is synchronous,
The monitoring arrangement also includes：
Health monitoring portion, the health monitoring portion obtain the status information of the controller from the common storage of the present apparatus,
It is to be in abnormality in normal condition to judge the controller；And
PLC fault information collections portion, it is determined as that the controller is in the situation of abnormality in the health monitoring portion
Under, the error message of the controller is collected in the PLC fault information collections portion from the common storage of the present apparatus.
5th invention is characterised by, in any one of first to fourth invention,
Including the first supervision object equipment and the second supervision object equipment that can be in communication with each other with connecting-type agreement,
The monitoring arrangement also includes connection status monitoring unit, and the connection status monitoring unit collects first supervision object
The connection status of equipment identification and the connection status of the second supervision object equipment identification, are to beat only in two connection status
In the case of opening, it is judged to being in normal connection status, in the case of beyond some connection status is opening, is judged to locating
In abnormal connection status.
6th invention is characterised by, in any one of the first to the 5th invention,
The supervision object equipment includes the part for forming first transmission path and second transmission path
The network equipment,
The monitoring arrangement also includes SNMP information collection components, and the SNMP information collection components collect the net using SNMP
The status information of network equipment, and compared with definition information set in advance, be determined as in the case where whole is consistent normally,
In the case where being not all of unanimously, it is determined as exception.
Invention effect
It is dual by being carried out to the transmission path (network) between supervision object equipment and monitoring arrangement according to these inventions
Change, supervision object equipment is monitored using each transmission path, and monitoring result is multiplied, so as to be sentenced with high robust
Determine the state of supervision object equipment.In addition, in the case of network itself fail, also event can be determined with high robust
Hinder position.
Brief description of the drawings
Fig. 1 is the figure for illustrating the system architecture involved by embodiments of the present invention 1.
Fig. 2 is the flow chart for the processing routine for defining the execution of file reading process portion 14.
Fig. 3 is the flow chart for the processing routine that poll processing unit 13 performs.
Fig. 4 is the flow chart for the processing routine that Stateful Inspection processing unit 15 performs.
Fig. 5 is the figure for an example for representing poll response monitoring result.
Fig. 6 is the flow chart for the processing routine that computerized information collection portion 17 performs.
Fig. 7 is the flow chart for the processing routine that health monitoring portion 18 performs.
Fig. 8 is the flow chart for the processing routine that Web server portion 19 performs.
Fig. 9 is an example of the Web monitoring pictures shown by Web terminals 7.
Figure 10 is the figure for illustrating the system architecture involved by embodiments of the present invention 2.
Figure 11 is the flow chart for the processing routine that PLC fault information collections portion 20 performs.
Figure 12 is the figure for illustrating the system architecture involved by embodiments of the present invention 3.
Figure 13 is the flow chart for the processing routine that connection status monitoring unit 22 performs.
Figure 14 is an example of the inspection result of connection state information.
Figure 15 is the figure for illustrating the system architecture involved by embodiments of the present invention 4.
Figure 16 is the flow chart for the processing routine that SNMP information collection components 24 perform.
Figure 17 is an example of SNMP information.
Embodiment
Below, referring to the drawings, embodiments of the present invention are described in detail.In addition, wanted for common in each figure
Simultaneously the repetitive description thereof will be omitted for the additional identical label of element.
Embodiment 1.
[system architecture of embodiment 1]
Fig. 1 is the figure for illustrating the system architecture involved by embodiments of the present invention 1.System shown in Fig. 1 is steel
Ironworks control system.System shown in Fig. 1 includes：Control device, the network equipment, monitoring arrangement.
Control device is computer 1, HMI (Human Machine Interface：Man-machine interface) 4, PLC
(Programmable Logic Controller：Programmable logic controller (PLC)) 5, G/W (Gateway：Gateway) 6, Web terminals
7.The network equipment is the first HUB2, the 2nd HUB3, control LAN HUB8.Monitoring arrangement is network monitoring device 9.
Computer 1 is the all-purpose computer for the plan that generation is controlled to factory building production line.Computer 1 is received including information
Collection agency 16.In addition, HMI4 is to show plan, the all-purpose computer of state of a control that computer 1 generated.
Network monitoring device 9 includes arithmetic unit, storage device, input/output unit.Network monitoring device 9 includes：Net
Network monitoring unit 10, Stateful Inspection DB12, computerized information collection portion 17, health monitoring portion 18, Web server portion 19.Each several part
Arithmetic unit, storage device, input/output unit are acted by using regulated procedure and are realized.
In addition, network monitoring device 9 includes defining file 11.It is to describe to have to form steel plant's control system to define file 11
Equipment information file.For example, define file in include device name, the first IP address of equipment, the second IP address,
Believe the position that link information (with the first HUB2, the 2nd HUB3, control LAN with HUB8 link information), Web terminals are shown
Breath, the interval etc. that starts of the first MAC Address, the second MAC Address, device category, each several part are used to make each of network monitoring device 9
The various information that part is acted.
Network monitoring portion 10 includes poll processing unit 13, defines file reading process portion 14, Stateful Inspection processing unit 15.
(network)
Control device is that computer 1, HMI4, PLC5, G/W6, Web terminal 7 are connected with the first HUB2 respectively.Equally, count
Calculation machine 1, HMI4, PLC5, G/W6, Web terminal 7 are connected with the 2nd HUB3 respectively.That is, each control device is respectively with independent two
Individual HUB is connected.
Network monitoring device 9 is connected with the first HUB2 and the 2nd HUB3 respectively.Therefore, network monitoring device 9 is via tool
The first transmission path (Fig. 1 first network) for having the first HUB2 is connected with each control device, and via with second
HUB3 the second transmission path (Fig. 1 the second network) is connected with each control device.That is, each control device is via 2 systems
Heterogeneous networks be connected with network monitoring device 9.
Network monitoring device 9 is connected with network more than at least two.Preferably network monitoring device 9 is with forming steel
The all-network of factory's control system is connected.
In addition, PLC5, G/W6, network monitoring device 9 are also connected with control LAN with HUB8.Control LAN with HUB8 via
Remote I/O is connected with each several part of steel plant.
With the 3rd transmission path of HUB8 connections PLC5, G/W6, network monitoring device 9 it is with logic via control LAN
Property common storage scanning (cycle) transmission means network (be recited as below control LAN).Specifically, control in LAN,
Each node (PLC5, G/W6, network monitoring device 9) has common storage respectively.Storage is assigned in each common storage originally
The region of nodal information and his nodal information.Each nodal information is stored in the common storage of this node, is periodically multicasted to
His node.Therefore, the common storage of each node is by synchronization, and each node can obtain his node from the common storage of this node
Information.Thus, logicality common storage is realized by the common storage of synchronous each node, control LAN.The following description
In, referred to as control LAN common storage.
In steel plant's control system, originally with control devices such as more PLC, HMI, and the required portion of steel plant is arranged at
Position.In present embodiment for convenience of description, each 1 is only described, but is not limited to this.In addition, sometimes with MC, (medium turns
Parallel operation) etc. between HUB carry out change of medium (being converted into optical cable from UTP cables).In the present invention, MC is as network processes.
In Fig. 1, Web terminals 7 are connected with the 2nd HUB3, but can also connect the network that can access network monitoring device 9.
In addition, network can also be connected with more Web terminals.
[each several part action in embodiment 1]
Then, illustrated using each several part actions of Fig. 1~Fig. 8 to network monitoring device 9.Network monitoring portion 10, meter
Calculate in machine information collection portion 17, health monitoring portion 18, Web server portion 19, equipment, monitoring method difference as supervision object
It is different.If each several part is acted with same period, monitoring result, which is collected, needs the collection cycle with most slow component to match.
In this case, it is slower due to collecting the cycle, it is thus possible to not to monitor temporary failure.The system of present embodiment
In, in order to relax such restrictive condition, it can respectively be set in each several part and collect the cycle.
(defining file reading process)
In network monitoring portion 10, definition file 11, this definition file are read first with file reading process portion 14 is defined
11 describe the information for having the equipment for forming steel plant's control system.Fig. 2 is the processing journey for defining the execution of file reading process portion 14
The flow chart of sequence.
In Fig. 2, first, define file reading process portion 14 and read definition file 11 (step S21).Specifically, define
Whether the content for the definition file 11 that file reading process portion 14 judges to read meets defined form, is exported if having exception
Error message.
In the case where defining file 11 and meeting prescribed form, defining file reading process portion 14 will define in file 11
Hold as definition information write state monitoring DB12 (step S22).
(poll processing)
Then, network monitoring portion 10 performs poll processing according to Stateful Inspection DB12 definition information.Poll processing unit 13
The first transmitting-receiving process and the second transmitting-receiving process are performed, first transmitting-receiving process utilizes the first transmission path (Fig. 1 first network)
To supervision object environment inquiry state, second transmitting-receiving process is using the second transmission path (Fig. 1 the second network) to monitoring pair
As environment inquiry state.Supervision object equipment includes above-mentioned control device and the network equipment.Can be by all control
Equipment and the network equipment, can also be only using specific control devices as supervision object equipment as supervision object equipment.
Fig. 3 is the flow chart for the processing routine that poll processing unit 13 performs.The starting interval of poll processing unit 13 is by defining
Specified by file 11, the definition information as Stateful Inspection DB12 is saved.
In Fig. 3, first, poll processing unit 13 is defined in information according to Stateful Inspection DB12 definition information to logging in
Supervision object equipment (logging device) perform respectively using the first transmitting-receiving process the first transmission path poll (ping etc.)
With the poll (step S31) of the second transmission path using the second transmitting-receiving process.
Response of the poll processing unit 13 to poll is monitored (step S32).Specifically, poll processing unit 13 is according to shape
State monitors DB12 definition information, monitors whether there is response within the monitoring time.The response of poll is (every with every transmission paths
Individual network) monitor.
Poll processing unit 13 carries out logging device response to every supervision object equipment and checked, if having sound within the monitoring time
It should then be judged as normally, being judged as exception (step S33) if not responding within the monitoring time.Response is whether there is with every transmission
Path (each network) judges.
Poll processing unit 13, which performs, logs in MAC inspections (step S34).Specifically, poll processing unit 13 judges to have and rung
The MAC of the MAC Address for the supervision object equipment answered and the supervision object equipment in the definition information for logging in Stateful Inspection DB12
Whether address is consistent.It is judged to normally, being in the case of inconsistencies determined as different in the case of consistent with logging in MAC Address
Often.
Polling result is written to Stateful Inspection DB12 (step S35) by poll processing unit 13.Specifically, poll processing unit
13 results that step S33 logging device is responded to the result checked and step S34 login MAC inspections are supervised as poll response
DB12 is monitored depending on result write state.
In addition, being connected with the network number of supervision object equipment can be changed by definition file 11.In present embodiment, make
For an example, the situation that the network number shown in Fig. 1 is 2 is illustrated.
As described above, system according to embodiment 1 of the present invention, by using ping etc. as supervision object equipment
Monitoring method, equipment not corresponding with SNMP various special agreements can be also served as supervision object.By will monitoring pair
As the MAC Address of equipment signs in definition information, whether the equipment that can detect to be not logged in is not connected with control system.
(Stateful Inspection processing)
Then, network monitoring portion 10 performs Stateful Inspection processing according to Stateful Inspection DB12 definition information.Stateful Inspection
Inquiry result of the processing unit 15 based on the first transmission path (Fig. 1 first network) using the first transmitting-receiving process and use second
The combination of the inquiry result of the second transmission path (Fig. 1 the second network) of transmitting-receiving process, the first transmission path, are judged respectively
Two transmission paths, supervision object equipment are in normal condition or abnormality.
Specifically, at least one party in the inquiry result of the first transmitting-receiving process and the inquiry result of the second transmitting-receiving process
It is in the case of having response, Stateful Inspection processing unit 15 is determined as that supervision object equipment is in normal condition.
In addition, the both sides in the inquiry result of the first transmitting-receiving process and the inquiry result of the second transmitting-receiving process are no sound
In the case of answering, Stateful Inspection processing unit 15 is determined as that supervision object equipment is in abnormality.
In addition, the first transmitting-receiving process inquiry result be without response and the inquiry result of the second transmitting-receiving process is that have sound
In the case of answering, Stateful Inspection processing unit 15 is determined as that the first transmission path is in abnormality, and supervision object equipment is in
Normal condition.
Fig. 4 is the flow chart for the processing routine that Stateful Inspection processing unit 15 performs.Between the starting of Stateful Inspection processing unit 15
Every as specified by definition file 11, the definition information as Stateful Inspection DB is saved.By the starting of Stateful Inspection processing unit 15
Interval is appointed as less than the 1/2 of the starting interval of poll processing unit 13.
In Fig. 4, first, Stateful Inspection processing unit 15 is read from Stateful Inspection DB12 defines information and above-mentioned poll response prison
Depending on result (step S41).
Stateful Inspection processing unit 15 is based on poll response monitoring result, and supervision object equipment is responded by each network
Check (step S42).
Stateful Inspection processing unit 15 judges the state (step S43) of supervision object equipment.Specifically, using Fig. 1's
The polling result of first network and using at least one party in the polling result of Fig. 2 the second network it is in the case of having response,
Stateful Inspection processing unit 15 is determined as that supervision object equipment is in normal condition.Using the first transmission path polling result and
In the case of being no response using the both sides in the polling result of the second transmission path, Stateful Inspection processing unit 15 is judged to supervising
Abnormality is in depending on object-based device.
Fig. 5 is the figure for an example for representing poll response monitoring result.In example shown in Fig. 5, using only first
In the case of each supervision object equipment of network monitoring, the prison that the first HUB2, HMI4, PLC5, G/W6 is in abnormality can be obtained
Depending on result.In the system of present embodiment, the monitoring result using the second network is further obtained.In step S43 processing, make
These monitoring results are multiplied, so as to be determined as that the first HUB2 and HMI4 is in abnormality, at other supervision object equipment
In normal condition.
Stateful Inspection processing unit 15 is using the state for each supervision object equipment for judging to obtain in step S43 as Stateful Inspection
As a result write state monitoring DB12 (step S44).
As described above, system according to embodiment 1 of the present invention, via multiple independent networks to supervision object equipment
Viability monitored, by making the monitoring result in each network be multiplied, can determine that the failure happening part of system.
(computerized information collection)
Information gather agent 16 collects the information in computer 1 according to the request from computerized information collection portion 17.Figure
6 be the flow chart for the processing routine that computerized information collection portion 17 performs.
In Fig. 6, first, computerized information collection portion 17 reads the definition letter relevant with computer 1 from Stateful Inspection DB12
Cease (step S61).
Computerized information collection portion 17 performs computer mode and collects (step S62).Specifically, computerized information is collected
The collection of cpu load, DISK usage amounts, program work state etc. is asked for the Information gather agent 16 in computer 1 in portion 17.
The execution information of computerized information collection portion 17 collects result inspection (step S63).Specifically, computerized information is received
The projects for the collection result that step S62 is collected into are compared in collection portion 17 with defining the threshold value of projects set in information
Compared with judgement collects result whether below threshold value.Situation of the computerized information collection portion 17 in all items below threshold value
Under, it is determined as that computer 1 is in normal condition, in the case where some project is more than threshold value, is determined as that computer 1 is in different
Normal state.
Computerized information collection portion 17 monitors step S62 collection result and step S63 result of determination write state
DB (step S64).
As described above, system according to embodiment 1 of the present invention, by the way that the operating state (CPU of computer 1 will be collected
Load, DISK usage amounts, program work state etc.) Information gather agent 16 be configured at computer 1, computer 1 can be monitored
Operating state.
(health monitoring)
In above-mentioned control LAN common storage (scan transfer memory), to for detecting supervision object equipment (example
Such as PLC5) state be that normal or abnormal healthy counter carries out assignment.Supervision object equipment is updated periodically healthy meter
Number device.Health monitoring portion 18 monitors to healthy counter.
Fig. 7 is the flow chart for the processing routine that health monitoring portion 18 performs.The starting interval in health monitoring portion 18 is by defining
Specified by file 11, the definition information as Stateful Inspection DB12 is saved.
In Fig. 7, first, health monitoring portion 18 based on the definition information relevant with PLC5 preserved in Stateful Inspection DB12,
For the PLC5 as supervision object equipment, the information (station address etc.) (step S71) needed for the monitoring of healthy counter is obtained.
Health monitoring portion 18 performs PLC health and collects (step S72).Specifically, health monitoring portion 18 is from network monitoring
Common storage on device 9 reads PLC5 healthy counter.
Health monitoring portion 18 performs PLC health examination (step S73).Specifically, health monitoring portion 18 checks PLC5's
Whether healthy counter is different from last value.Health monitoring portion 18 stops the feelings of (identical with last value) in healthy counter
Under condition, it is determined as that PLC5 is in abnormality.
The state (normal/abnormal) for the PLC5 for judging to obtain is write shape by health monitoring portion 18
State monitoring DB12 (step S74).
As described above, system according to embodiment 1 of the present invention, is used as the PLC5's of supervision object equipment by monitoring
Status information (the healthy counter on control LAN common storage), can determine that the operating state of controller.
(Web server)
Web server portion 19 is shown by network monitoring portion 10, computerized information collection according to the request from Web terminals 7
The state in portion 17, the control device that health monitoring portion 18 is collected into and the network equipment.
Fig. 8 is the flow chart for the processing routine that Web server portion 19 performs.Asked according to the display from Web terminals 7,
Web server portion 19 is acted.
In Fig. 8, first, Web server portion 19 reads the structural information of network from Stateful Inspection DB12 and supervision object is set
The status information (step S81) of standby (control device and the network equipment).
Web server portion 19 checks the normal/abnormal state (step from the Stateful Inspection DB12 supervision object equipment read
Rapid S82).
Web server portion 19 will form the network equipment of steel plant control systems, the drafting information of control device send to
Web terminals 7 (step S83).Fig. 9 is an example of the Web monitoring pictures shown by Web terminals 7.
Normal/abnormal corresponding colouring information with supervision object equipment is sent to Web terminals by Web server portion 19
7 (step S84).In example shown in Fig. 9, normal equipment is drawn with green, and abnormal equipment is drawn with red.
In addition, in Web terminals 7, by selecting the supervision object equipment on picture, can show by computerized information collection portion
17th, the status information that the processing in health monitoring portion 18 is collected into.The equipment for forming steel plant's control system can be confirmed in picture
State.
As described above, system according to embodiment 1 of the present invention, by setting Web service in network monitoring device 9
Device portion 19, the viability of steel plant's control system can be confirmed from the external equipment (Web terminals 7) being connected with network.
However, in the system of above-mentioned embodiment 1, employ and poll processing is performed with the transmission path of 2 systems
Mode, but be not limited to this.Poll processing can also be performed with transmission paths more than 3 systems, by by their inquiry
Ask that result is multiplied, to determine the failure happening part of system.
Embodiment 2.
[system architecture of embodiment 2]
Then, reference picture 10, Figure 11 illustrate embodiments of the present invention 2.The system of present embodiment can be by scheming
Make network monitoring device 9 implement Figure 11 program in structure shown in 10 to realize.
Figure 10 is the figure for illustrating the system architecture involved by embodiments of the present invention 2.System knot shown in Figure 10
In structure, except network monitoring device 9 also includes PLC fault information collections portion 20 and the PLC fault logs preservation this point of file 21
In addition, it is identical with the system architecture shown in Fig. 1.
[each several part action in embodiment 2]
(PLC fault information collections)
Figure 11 is the flow chart for the processing routine that PLC fault information collections portion 20 performs.20, PLC fault information collections portion
Started according to Stateful Inspection DB12 definition information with the fixed cycle.
In Figure 11, first, PLC fault information collections portion 20 reads the PLC5's as supervision object from Stateful Inspection DB12
Status information (step S111).PLC5 status information is monitored by the write state of health monitoring portion 18 described in embodiment 1
DB12。
PLC fault information collections portion 20 performs PLC health examination (step S112).Check read PLC5 state
Information, then read PLC fault logs from the common storage of network monitoring device 9 if abnormality and (occur inside PLC5
The error message exported when abnormal).
PLC fault information collections portion 20 writes the PLC fault logs read the PLC failure days of network monitoring device 9
Will preserves file 21 (step S113).
Generally, the PLC5 of the various actuators of steel plant is controlled to be difficult to because of its hardware limitation in PLC5 during preservation length
PLC fault logs.Therefore, in the case where situation of multiple failures etc. occurs, the PLC fault logs in PLC5 are covered sometimes, if
After failure generation, etc. operator arrive and regather PLC fault logs, error message when may result in PLC failures is lost,
It is difficult to the investigation of failure cause.
In system involved by embodiments of the present invention 2, PLC5 state is monitored with the fixed cycle, by different in generation
PLC fault logs are saved in PLC fault logs when often and preserve file 21, so as to retain error message during PLC failures.This
Outside, by shortening the starting cycle in PLC fault information collections portion 20, the PLC fault logs lost can be reduced, adjust failure cause
Looking into becomes easy.
Embodiment 3.
[system architecture of embodiment 3]
Then, 12~Figure 14 of reference picture illustrates embodiments of the present invention 3.The system of present embodiment can be by scheming
Make network monitoring device 9 implement Figure 13 program in structure shown in 12 to realize.
Figure 12 is the figure for illustrating the system architecture involved by embodiments of the present invention 3.System knot shown in Figure 12
In structure, except computer 1 and PLC5 includes connection status collection portion 23, network monitoring device 9 includes connection status monitoring unit 22
It is identical with the system architecture shown in Fig. 1 beyond this point.
[each several part action in embodiment 3]
(connection status monitoring)
Figure 13 is the flow chart for the processing routine that connection status monitoring unit 22 performs.Connection status monitoring unit 22 is according to state
Monitoring DB12 definition information is started with the fixed cycle.
In Figure 13, first, connection status monitoring unit 22 is read and the prison as connection status monitoring from Stateful Inspection DB12
The relevant definition information (step depending on the equipment (equipment that computer 1, PLC5 etc. are provided with connection status collection portion 23) of object
S131)。
Connection status monitoring unit 22 collects connection state information (step S132).Based on the definition information read, for
The request of connection status collection portion 23 of each supervision object equipment sends connection state information and (beats opening/closing/ open/
Close etc.).The connection status collection portion 23 of each supervision object equipment collects current connection status in advance in other programs
Information, connection state information is sent to connection status monitoring unit 22 according to request.
In addition, beating opening/closing refers to that device A proposes connection request/disconnection request to equipment B and slave unit B is received perhaps
The state that can be responded, open/ closing refer to device A to equipment B propose connection request/disconnection request but also not from
Equipment B receives the state of permission response.
Connection status monitoring unit 22 checks the connection state information (step S133) being collected into.Based on the connection shape being collected into
State information, it is determined as that the paired connection status is normal in the case where paired connection status is completely in opening, a certain
Individual connection status for open beyond in the case of, be determined as connection status exception.
Figure 14 is an example of the inspection result of connection state information.In Figure 14, computer 1 and PLC5 connection status
Recorded by each socket.As socket 1, in the connection that the connection status collection portion 23 of computer 1 and PLC5 is collected into
In the case that state is " connection ", it is determined as that connection status is normal.In addition, as socket 2, in the connection shape of computer 1
The connection status that state collection portion 23 is collected into is " not connected ", and the connection status that PLC5 connection status collection portion 23 is collected into is
In the case of " connection ", it is determined as connection status exception.
The inspection result of connection state information is written to Stateful Inspection DB12 (step S134) by connection status monitoring unit 22.
As described above, the system involved by 3 according to the embodiment of the present invention, can detect half-connection (paired side
To open, other side side is closing), it can detect that logicality connection is abnormal.Set as the steel plant's control system that is particularly suitable for use in
The system that standby annexation does not change.
Embodiment 4.
[system architecture of embodiment 4]
Then, 15~Figure 17 of reference picture illustrates embodiments of the present invention 3.The system of present embodiment can be by scheming
Make network monitoring device 9 implement Figure 16 program in structure shown in 15 to realize.
Figure 15 is the figure for illustrating the system architecture involved by embodiments of the present invention 4.System knot shown in Figure 15
It is identical with the system architecture shown in Fig. 1 in addition to network monitoring device 9 possesses this point of SNMP information collection components 24 in structure.
[each several part action in embodiment 4]
(SNMP informations)
Figure 16 is the flow chart for the processing routine that SNMP information collection components 24 perform.SNMP information collection components 24 are according to state
Monitoring DB12 definition information is started with the fixed cycle.
In Figure 16, first, SNMP information collection components 24 read from Stateful Inspection DB12 and set with the object of SNMP state collections
Standby (in the example shown in Figure 15, the first HUB2, the 2nd HUB3 are object-based device) relevant definition information (login letter of each equipment
The normality threshold information of breath and communications status) (step S161).
SNMP information collection components 24 collect SNMP information (step S162) for object-based device via SNMP.
SNMP information collection components 24 check the SNMP information (step S163) being collected into.Specifically, SNMP informations
Portion 24 based on the SNMP information being collected into, check the state (open (up)/close (down)) of each port, link speed (such as
100M full duplexs (Full) etc.), connection destination MAC Address, check whether the log-on message phase one read with step S161
Cause.Only in the case where whole is consistent, it is determined as normal.In the case of others, it is determined as exception.In addition, received in step S162
In the SNMP information collected, in the case where HUB itself state is exception, it is determined as exception.
In addition, the traffic load, mistake in the SNMP information that step S162 is collected into by SNMP information collection components 24 occur
The communications status such as rate information judges communications status information compared with the normality threshold of the step S161 communications status read
Whether below normality threshold.Carry out normal/abnormal judgement.The projects of SNMP information collection components 24 in communications status information
In the case of below normality threshold, it is determined as that object-based device is normal, is more than communication in the project of some communications status information
In the case of state normality threshold, it is determined as that object-based device is in abnormality.
Figure 17 is an example of SNMP information.In Figure 17, IP address, each port are recorded for each network equipment
State, the HUB state of itself.
The inspection result of SNMP information is written to Stateful Inspection DB12 (step S164) by SNMP information collection components 24.
As described above, the system involved by 4 according to the embodiment of the present invention, for nets such as the HUBs corresponding with SNMP
Network equipment, exception can be detected based on the difference with log-on message set in advance.
Label declaration
1 computer
2 the oneth HUB
3 the 2nd HUB
4 HMI
5 PLC
6 G/W
7 Web terminals
8 control LAN HUB
9 network monitoring devices
10 network monitoring portions
11 define file
12 Stateful Inspection DB
13 poll processing units
14 define file reading process portion
15 Stateful Inspection processing units
16 Information gather agents
17 computerized information collection portions
18 health monitoring portions
19 Web server portions
20 PLC fault information collections portions
21 fault logs preserve file
22 connection status monitoring units
23 connection status collection portions
24 SNMP information collection components
Claims (5)
1. a kind of steel plant's control system, steel plant's control system includes：Respectively with the first independent transmission path and second
The supervision object equipment that transmission path is connected；And it is connected respectively with first transmission path and second transmission path
The monitoring arrangement connect, it is characterised in that
The monitoring arrangement includes：
Poll processing unit, the poll processing unit perform the first transmitting-receiving process and the second transmitting-receiving process, first transmitting-receiving process via
First transmission path is to the supervision object environment inquiry state, and second transmitting-receiving process is via second transmission path
To the supervision object environment inquiry state；And
Stateful Inspection processing unit, inquiry result and described second of the Stateful Inspection processing unit based on first transmitting-receiving process are received
The combination of the inquiry result of processing is sent out, judges first transmission path, second transmission path, the supervision object respectively
Equipment is in normal condition or abnormality,
The supervision object equipment is the controller being controlled to the actuator of steel plant,
The controller includes storing the status information of this equipment and the common storage of error message,
The content of the common storage of the controller is same via the 3rd transmission path and the common storage of the monitoring arrangement
Step,
The monitoring arrangement also includes：
Health monitoring portion, the health monitoring portion obtain the status information of the controller from the common storage of the present apparatus, judged
The controller is to be in abnormality in normal condition；And
PLC fault information collections portion, should in the case of being determined as that the controller is in abnormality in the health monitoring portion
The error message of the controller is collected from the common storage of the present apparatus in PLC fault information collections portion.
2. steel plant's control system as claimed in claim 1, it is characterised in that
The Stateful Inspection processing unit
At least one party in the inquiry result of first transmitting-receiving process and the inquiry result of second transmitting-receiving process is that have
In the case of response, it is determined as that the supervision object equipment is in normal condition,
Both sides in the inquiry result of first transmitting-receiving process and the inquiry result of second transmitting-receiving process are no sound
In the case of answering, it is determined as that the supervision object equipment is in abnormality.
3. steel plant's control system as claimed in claim 1 or 2, it is characterised in that
The Stateful Inspection processing unit
It is that the inquiry result without response and second transmitting-receiving process is that have response in the inquiry result of first transmitting-receiving process
In the case of, it is determined as that first transmission path is in abnormality, and the supervision object equipment is in normal condition.
4. steel plant's control system as claimed in claim 1 or 2, it is characterised in that
Including the first supervision object equipment and the second supervision object equipment that can be in communication with each other with connecting-type agreement,
The monitoring arrangement also includes connection status monitoring unit, and the connection status monitoring unit collects the first supervision object equipment
The connection status of identification and the connection status of the second supervision object equipment identification, are opening only in two connection status
In the case of, it is judged to being in normal connection status, in the case of beyond some connection status is opening, is determined as in different
Normal connection status.
5. steel plant's control system as claimed in claim 1 or 2, it is characterised in that
The supervision object equipment includes the net for the part for forming first transmission path and second transmission path
Network equipment,
The monitoring arrangement also includes SNMP information collection components, and the SNMP information collection components are collected the network using SNMP and set
Standby status information, and compared with definition information set in advance, be determined as in the case where whole is consistent normally, not
In the case of being all consistent, it is determined as exception.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-066348 | 2014-03-27 | ||
| JP2014066348A JP6194835B2 (en) | 2014-03-27 | 2014-03-27 | Steel plant control system |
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| CN104950832A CN104950832A (en) | 2015-09-30 |
| CN104950832B true CN104950832B (en) | 2018-03-09 |
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| JP (1) | JP6194835B2 (en) |
| KR (1) | KR101574900B1 (en) |
| CN (1) | CN104950832B (en) |
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| JP2017163508A (en) * | 2016-03-11 | 2017-09-14 | オムロン株式会社 | Master slave control system, method for controlling master slave control system, information processing program, and recording medium |
| JP6852884B2 (en) * | 2017-03-21 | 2021-03-31 | Ｎｅｃプラットフォームズ株式会社 | Monitoring systems, monitoring equipment, monitoring methods, and programs |
| CN109360118A (en) * | 2018-10-26 | 2019-02-19 | 上海新增鼎数据科技有限公司 | A kind of plant states monitoring method, device, system, equipment and storage medium |
| JP2021022760A (en) * | 2019-07-24 | 2021-02-18 | 株式会社日立製作所 | Communication path monitoring device and communication path monitoring method |
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| JP2002351535A (en) * | 2001-05-29 | 2002-12-06 | Mitsubishi Electric Corp | Application program operation local controller and plant controller for iron and steel |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20150112726A (en) | 2015-10-07 |
| JP6194835B2 (en) | 2017-09-13 |
| CN104950832A (en) | 2015-09-30 |
| KR101574900B1 (en) | 2015-12-04 |
| JP2015192202A (en) | 2015-11-02 |
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