JP3368131B2 - Polling control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention determines the timing at which information should be transmitted and received between a plurality of devices and a common monitoring device connected to these devices via a link. The polling control method to be determined.

[0002]

2. Description of the Related Art In recent years, in a net-like communication system, the scale has been expanded in order to adapt to the cost reduction of terminals, the diversification of transmission information, and the increase in the amount of transmission information, and the form of network It is diversifying. Therefore, for the operation and maintenance of such a communication system, in order to flexibly adapt to expansions and repairs and to carry out accurately, it is necessary to monitor and control the operation of the node device, and A monitoring device with proper man-machine interface is applied.

FIG. 9 is a diagram showing a configuration example of a conventional supervisory control system. In the figure, node devices 101 ₁ , 1
01 _N are transmission lines 102 ₁ to 10 arranged in series, respectively.
Of the 2 _N-1 , it is connected to one end of the transmission lines 102 ₁ and 102 _N , and the node devices 10 ₁₂ to 10 ₂ are connected to relay points of these transmission lines.
101 _N-1 are arranged respectively. Node device 101 ₁
Is connected to the monitoring device 104 ₁ via the monitoring line 103 ₁ , and the node device 101 _N is connected to the monitoring device 104 ₂ via the monitoring line 103 ₂ .

Monitoring device 104₁ Then, the communication interface
Section 105₁ Is the monitoring line 103₁ Connected to that communication
In addition to the interface unit, the operation unit 106₁ , Display 1
07 ₁ And external storage 108₁ Is the processor 109₁ of
Connected to the corresponding input / output. The monitoring device 104₂ 
For the configuration of₁ Is the same as
Therefore, illustration and description are omitted, and in the following, the corresponding
Assign the same code with the subscript "2" added to the component
I will.

In the supervisory control system having such a configuration,
In the storage area of the external storage 108 ₁ , the node device 101 ₁
A state management file in which states of ˜101 _N are individually recorded is stored in advance. Further, the processor 109 ₁ recycles the sub-numbers “1” to “N” assigned to the reference numerals of the node devices 101 _{1 to} 101 _N in a predetermined order (for simplicity, here). The destination is a node device (hereinafter, simply referred to as a "polling destination") that is determined according to a click condition (see FIG. 10).
(1)), and also generates a "polling command" which is a request to confirm the status or to start a process related to operation and maintenance, and sends the polling command to the monitoring line 103 ₁ via the communication interface unit 105 ₁ ( Figure 1
0 (2), FIG. 11 (1)).

In the following, for simplification, the supervisory control information including such a polling command is used, and the supervisory lines 103 ₁ , 103 ₂ and the transmission lines 102 _{1 to} 102 _N-1.
For things that are transmitted via the
Suppose it is given in packets adapted to the LC procedure.
On the other hand, the node device 101 _1, that the polling command by performing a sequence control capture to determine whether the destination corresponds to the own station, for monitoring control process corresponding to the case the result is true Thus, a response indicating the above-mentioned state (including the congestion state) or the result of processing is generated. Furthermore, the node device 101 _1, the monitoring circuit 10 the response
It is sent to the monitoring device 104 ₁ via 3 ₁ (see FIG. 1).
1 (2)).

On the contrary, if it is false, no
Device 101₁ Is the corresponding polling command
102₁ To the node device 1 that relays to
01 ₂~ 101_NIs the node device 1 as described above.
01₁ The same process as the process performed by is performed. Incidentally, this
Node device 101₂~ 101_NIs sent by
Status and processing results, the node device 1
01_N-1~ 101₁Relays based on the destination
U

Further, in the monitoring device 104 ₁ , the processor 109 ₁ receives the response (state or processing result) sent from any of the polling destinations in this way via the communication interface unit 105 ₁ (see FIG. 10 (3)), the contents are analyzed. In the processor 109 ₁ , when the result of the analysis indicates the congestion state, the polling command is repeatedly sent to the corresponding polling destination for a finite number of times N _r at a predetermined frequency (FIG. 10 (4)). ).

Further, the processor 109 ₁ selects the result of such analysis and the contents of the above-mentioned state management file,
The contents of the area corresponding to the result are compared (see FIG. 10).
(5) If there is any difference between the two, a "state matching command" with the corresponding node device as the destination is generated and the command is sent to the monitoring line 103 ₁ in the same manner as the polling command described above ( FIG. 10 (6)).

Further, the processor 109 ₁ waits for a response to such a state matching command (see FIG. 10).
(7)) When received, the response is analyzed (Fig. 10 (8)). Further, when the result indicates a congestion state, the processor 109 ₁ repeatedly transmits the state matching command in the same manner as the polling command described above (FIG. 10 (9)),
For other legitimate responses, by storing the corresponding response in the corresponding area of the status management file,
The status management file is updated (FIG. 10 (10)).

However, under the comparison described above, the processor 109 ₁ waits for a predetermined time T _P when the analysis result and the corresponding area of the state management file match (see FIG. 10 (11) and FIG. 11 (3)), and the above-described series of processes (FIGS. 10 (1) to (11)) are repeated for the polling destinations that follow in the order described above. The polling destinations are not limited to all the node devices registered in the state management file, and for example, those that are in a non-implemented state or in a dormant state or fall outside the frame of the system configuration are appropriately excluded.

Further, in the above-mentioned conventional example, the polling time point is determined at a predetermined frequency, but, for example, a method of carrying out at a pre-reserved time point has also been conventionally applied.

[0013]

However, in the above-mentioned conventional example, since the waiting time T _P is performed prior to the switching of the polling destinations, the larger the number N of node devices is, the more polling these node devices are. The time required for one round increases, and for example, if the notification of the failure that has occurred in the transmission device 101 ₁ is not normally transmitted to the monitoring device 104 ₁ , the failure has occurred (FIG. 11 (a)). In order for the monitoring device 104 ₁ to recognize the occurrence of such a failure from the time point, it takes a long time until the second polling is performed to the corresponding transmission device at the shortest after the occurrence (FIG. 11 (b)). It took time (= 2 NT _P ).

Further, in the case it fell into a state in which the transmission device 101 ₂ is unable to respond to the polling command (FIG. 11 (c)), the monitoring device 104 ₁ for the appropriate polling command (FIG. 11 (d)) When the period (not shown in FIG. 10) for waiting for a response elapses (FIG. 11)
I was aware of this kind of situation with a delay until (e)). Further, such a transmission device 101 ₂ fell into a state is restored to a normal state when (FIG. 11 (f)), the monitoring device 104
_{No. 1} recognized the recovery after a delay until the time when the response to the polling command issued to the transmission device was obtained (FIG. 11 (g)).

Further, it falls into a state where the node device 101 ₃ is unable to respond to the polling command (Fig. 11 (h)),
And restored to the normal state in a short period of time than the time NT _P if (Fig 11 (i)), the monitoring apparatus 104 ₁ is "failure report that is spontaneously notified from the node device corresponding to after the restoration It was not possible to grasp such a state until "" was given.

That is, in the conventional example, the monitoring device 104 ₁
Is likely to cause a difference between the states of the node devices 101 _{1 to} 101 _N and the actual states of these node devices, and it took a long time to correct the difference. In addition, in the method in which the monitoring device issues a status acquisition command requesting the status at that point in time in response to a report voluntarily issued by the node device in which the failure has occurred, the number equal to the number of such monitoring devices is used. Since the state acquisition command is given to the corresponding node device almost at the same time, a congestion state occurs, or a state occurs in which the monitoring device 104 ₁ retransmits a similar state acquisition command secondarily in accordance with the congestion state. As a result, the original efficiency of monitoring and control may be reduced, and the procedure of communication procedure control and other processing may be complicated.

It is an object of the present invention to provide a polling control system that improves real-time performance and reliability while reducing the load.

[0018]

FIG. 1 is a block diagram showing the principle of the invention described in claims 1-9.

According to the invention described in claim 1, a plurality of devices 11 are provided.
_An inquiry unit 12 that sequentially inquires from _{1 to} 11 _N whether or not there is a transmission request or whether or not reception is possible;
Among the plurality of devices 11 _{1 to} 11 _N, the response analysis unit 13 that analyzes the response given from the object of the inquiry made by the inquiry unit 12 and determines whether or not to continue the inquiry, and the object is transmitted. The processing means 14 is provided with a processing means 14 for performing either of the receiving processing of the information to be transmitted and the transmitting processing of transmitting the transmission information to the target according to the result of the analysis performed by the response analyzing means 13. Has a means for detecting the end point of the reception processing and the transmission processing, and the inquiry means 12 temporarily makes an inquiry at a frequency set in advance along the time axis or set based on the count value of the target. That is, the result of the determination made by the response analysis means 13 indicates that the continuation is permitted, and the time when the processing means 14 detects the continuation. Characterized in that it has a cormorants means.

According to a second aspect of the present invention, in the polling control method according to the first aspect, a man-machine interface unit 21 is provided which serves as a man-machine interface for information relating to any of inquiry, reception processing and transmission processing. The inquiring means 12 is characterized by including means for suspending the continuation of the inquiry when the man-machine interface means 21 takes the man-machine interface.

According to a third aspect of the present invention, in the polling control system according to the first aspect, the inquiry means 12 is provided with a plurality of devices 11 ₁ regarding the transmission information transmitted by the processing means 14 in the process of the transmission processing. ~ 11 _N , obtain the processing amount of processing to be performed by the destination device of the transmission information based on the format or content of the transmission information, and inquire over the time given by a monotonically non-decreasing function for the processing amount. It is characterized by including means for suspending the continuation of.

According to the invention described in claim 4, in the polling control method according to claim 1, the inquiry means 12 starts or continues an inquiry at a preset time and sends an inquiry subsequent to the inquiry. It is characterized by including means for holding. The invention according to claim 5 is the polling control method according to any one of claims 1 to 4,
Start a new query in response to a preset factor, and characterized in that it comprises a means for regulating the suspended until the time the query is a round for a plurality of devices 11 ₁ to 11 _N.

The invention according to a sixth aspect is the polling control method according to any one of the first to fifth aspects, wherein the inquiring means 1 out of the plurality of devices 11 _{1 to} 11 _N is used.
2 is provided with a storage unit 31 for storing the target of the inquiry and the target thereof, and the inquiry unit 12 includes a unit for limiting the target of the inquiry to the device stored in the storage unit 31. The means 14 includes means for obtaining the device that is the transmission source of the information based on the format of the information that is the subject of the reception processing, and the inquiry means 12 stores the device obtained by the processing means 14 in the storage means 31. It is characterized in that it includes means for judging whether or not it is stored in the device, and giving priority to the inquiry to the device when the result is false.

The invention according to claim 7 is the polling control method according to any one of claims 1 to 6, wherein a status indicating that the inquiry means 12 is continuing the inquiry is generated, The status notification means 41 for outputting the status is provided, and means for judging whether or not the status indicating the same status as the status is given to the inquiry means 12 from the outside, and for holding the inquiry during the period when the result is given. It is characterized by including.

The invention described in claim 8 is, in the polling control method according to any one of claims 1 to 6, when the inquiry means 12 generates a status indicating that when the inquiry is suspended. The processing means 14 is provided with a holding notification means 51 for outputting the status,
A plurality of devices 11 _{1 to} 11 _N and means for performing either reception processing or transmission processing in response to an inquiry given from the outside are included, and whether the inquiry means 12 is given the same status as the status from the outside. And holding the inquiry when the status is given and releasing the holding in response to the inquiry given from the outside.

According to the invention described in claim 9, in the polling control method according to any one of claims 1 to 6, when the inquiry means 12 holds an inquiry, a status indicating that is generated. The processing means 14 is provided with a holding notification means 51 for outputting the status,
A plurality of devices 11 _{1 to} 11 _N and means for performing either reception processing or transmission processing in response to an inquiry given from the outside are included, and whether the inquiry means 12 is given the same status as the status from the outside. It is characterized in that it includes means for discriminating the inquiries and suspending the inquiry for a predetermined period when the status is given.

In the polling control system according to the first aspect of the present invention, the inquiring means 12 comprises a plurality of devices 1.
Inquiries of 1 _{1 to} 11 _N regarding the presence or absence of a transmission request or the availability of reception are sequentially made in a cyclic manner. Response analysis means 13
Analyzes the response given from the device that is the subject of such an inquiry among these devices, and determines whether or not to continue the inquiry. Processing means 1
Reference numeral 4 indicates whether to perform either the receiving process of the information transmitted by such a target or the transmitting process of transmitting the transmission information to the target according to the result of the above-mentioned analysis, and the end point of these processes. To detect.

On the other hand, the inquiry means 12 continues at such a time and when the result of the determination made by the response analysis means 13 as described above indicates that the inquiry can be continued, and the time is continued. Such an inquiry is temporarily suspended at a frequency set based on the count value of the above-mentioned target preset along the axis. That is, among the plurality of devices 11 _{1 to} 11 _N , all or a plurality of devices are continuously inquired in a predetermined order, and each time the inquiries are completed, the subsequent inquiry is continued. Then you can take a temporary break,
Compared to the conventional example in which a pause is made every time an inquiry to each device is completed, the response analysis unit 13 and the processing unit 14 determine whether or not there is a transmission request and whether or not reception is possible for any of these devices. At the same time, it is possible to quickly recognize whether or not the operating status is normal.

In the polling control method according to the second aspect of the present invention, the man-machine interface means 21 takes a man-machine interface for information relating to any of inquiry, reception processing and transmission processing, and the inquiry means 12 has such a structure. Holds the query from continuing while the man-machine interface is being taken.

That is, since the inquiry is not continued while some processing related to the man-machine interface is being performed, the receiving processing and the processing which the processing means 14 should perform due to the large processing amount of such processing. It is possible to avoid a situation where the efficiency of the transmission process is lowered or a large amount of information to be generated and processed in the process of the reception process is accumulated.

In the polling control method according to the third aspect of the present invention, the inquiring unit 12 has the transmission information among the devices 11 _{1 to} 11 _N regarding the transmission information transmitted by the processing unit 14 in the process of the transmission process. The processing amount of the processing to be performed by the device that is the destination of is to be obtained based on the format or content of the transmission information, and the continuation of the inquiry is suspended for the time given by the monotonous non-decreasing function for the processing amount.

That is, the larger the amount of processing required by the device that is the destination of the transmission information to process the transmission information, the subsequent inquiry is postponed for a long time, which results from the frequent inquiry. Device 11 ₁
Overloading of ~ 11 _N is avoided. In the polling control method according to the present invention, the inquiry means 12 starts or continues an inquiry at a preset time, and holds an inquiry subsequent to the inquiry started or continued at that time.

Therefore, the reception processing and the transmission processing performed by the processing means 14 in response to the inquiry made at the reserved time are more reliable than the reception processing and the transmission processing similarly performed in response to the inquiry made constantly. Will be prioritized. In the polling control method according to the invention described in claim 5, the inquiry means 12 starts a new inquiry in accordance with a preset factor, and holds the inquiry until the time when the inquiry makes a round in the devices 11 _{1 to} 11 _N. Regulate.

Therefore, it becomes possible to promptly grasp the presence / absence of a transmission request, the availability of reception, and other states of all devices in accordance with an event that occurred in the course of operation. In the polling control system according to the invention described in claim 6, the storage means 31 stores the target of the inquiry made by the inquiry means 12 among the devices 11 _{1 to} 11 _N and the target of the inquiry, and the inquiry is made. The means limits the inquiries to the devices thus stored in the storage means 31. The processing means 14 determines the device that is the transmission source of the information based on the format of the information that is the subject of the reception processing, and the inquiry means 12 determines whether or not the required device is stored in the storage means 31. If the result is false, the inquiry to the device is given priority.

That is, with respect to the device that was not the subject of the inquiry, the inquiry is given priority over the inquiry that is constantly made when some information is received, so that it is promptly stored in the storage means 31. And it will be the subject of subsequent inquiries. In the polling control system according to the invention described in claim 7, the status notification means 4
1 generates a status indicating that the inquiry means 12 is continuing the inquiry, and outputs the status. The inquiry means 12 determines whether or not a status indicating the same status as the above-mentioned status is given from outside except the status notification means 41, and holds the inquiry during the period when the result is given.

That is, even when there are a plurality of systems that make inquiries to the devices 11 _{1 to} 11 _N , arbitration relating to acquisition of the initiative of the inquiry is surely performed among these systems, so that whichever device is used. Also, it is possible to avoid a decrease in processing efficiency due to a plurality of queries being given simultaneously. In the polling control method according to the invention described in claim 8, the hold notification means 51 is the inquiry means 12
Generates and outputs a status indicating that when an inquiry is suspended, the processing means 14 performs either a reception process or a transmission process in response to an inquiry given from the outside together with the devices 11 _{1 to} 11 _N. The inquiry means 12 determines whether or not the same status as the above-mentioned status is given from the outside except the hold notification means 51, and when the status is given, the inquiry is held and
The hold is released according to the inquiry given from the outside.

That is, even when there are a plurality of systems that make inquiries to the devices 11 _{1 to} 11 _N , the arbitration relating to the acquisition of the initiative of the inquiry is surely performed between these systems, and under the arbitration, Since the suspended inquiry is surely continued in response to the inquiry directly given to the inquiry means 12 from the system having the initiative at that time, the procedure relating to the realization of the arbitration is simplified and at the same time, the claim 7 is claimed. As in the described invention, a decrease in processing efficiency is avoided.

In the polling control system according to the ninth aspect of the invention, the hold notifying means 51 is the inquiry means 1
When the device 2 holds the inquiry, a status indicating that is generated and output, and the processing unit 14 causes the devices 11 ₁ to ₁ 1 to output the status.
Either the reception process or the transmission process is performed in response to an inquiry given from the outside together with 1 _N. Inquiry means 12
Determines whether or not the same status as the above-mentioned status is given from the outside except the hold notifying means 51, and when the status is given, the inquiry is temporarily held for a predetermined period.

That is, even when there are a plurality of systems that make inquiries to the devices 11 _{1 to} 11 _N , the arbitration relating to the acquisition of the initiative of the inquiry is surely performed among these systems, and under the arbitration, Since the held inquiry is surely continued after the elapse of the predetermined period, the procedure is further simplified as compared with the invention described in claim 8, and the reduction of the processing efficiency is avoided.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 shows claims 1 to 9.
It is a figure which shows the embodiment corresponding to the invention of statement. In the figure, parts having the same functions and configurations as those shown in FIG. 9 are designated by the same reference numerals, and the description thereof will be omitted here.

The configuration of this embodiment and the conventional example shown in FIG.
The difference is that the monitoring device 104₁ , 104₂ Instead of monitoring equipment
Location 91₁, 91₂Is equipped with these monitoring devices
Fan 109₁, 109₂Instead of processor 92
₁, 92₂Is provided and configured. In addition, the actual
Correspondence between the embodiment and the block diagrams shown in FIGS.
In addition, the node device 101₁~ 101_NIs the device 11₁~ 1
1_NCorresponding to the processor 92₁(92 ₂) And communication in
Interface 105₁(105₂) Is the inquiry means 12,
Corresponding to the status notification means 41 and the hold notification means 51,
Rossa 92₁(92₂) And external storage 108₁(108₂)
Corresponds to the response analysis means 13 and the processing means 14,
Sessa 92₁(92₂), The display unit 107₁(107₂) And operations
Sakube 106₁(106₂) Is the man-machine interface means
21 corresponding to the processor 92₁(92₂) Has main memory
Or external storage 108₁(108₂) Corresponds to the storage means 31
To respond.

FIG. 3 is an operation flowchart of this embodiment.
It is (1). In the figure, the same processes as those shown in FIG. 10 are designated by the same reference numerals, and the description thereof is omitted here. The operation of this embodiment corresponding to the invention described in claim 1 will be described below with reference to FIGS. 2 and 3.

The processor 92 ₁ is the same as the series of processes performed by the processor 109 ₁ in the conventional example (see FIG. 3 (1)).
~ (10)) is performed to poll each polling destination. However, the processor 92 _1, for the standby over time T _P (FIG. 3 (11)), to determine whether the series of processing described above is completed for all the polled (FIG. 3 (12)), Omit it until the result is true.

That is, according to the present embodiment, the frequency of waiting as described above between the time point when the preceding polling is completed and the time point when the polling subsequent to the polling is started is significantly reduced. Node device 101 ₁
To 101 tangible state and potential state and to differences for those node devices monitoring device 91 _1, 91 ₂ to understand the _N can be suppressed greatly reduced.

FIG. 4 is an operation flowchart of this embodiment.
(2) Hereinafter, referring to FIG. 2 to FIG.
The operation of this embodiment corresponding to the invention described in 1) will be described.
In the monitoring device 91 ₁ , the external storage 10 of the processor 92 ₁
8 ₁ or the main memory, as shown in FIG.
Operation information indicating whether or not the keyboard or mouse constituting 6 ₁ is operated by an operator, control execution information indicating whether or not a large amount of processing is being performed, reservation monitoring activated based on a reservation Reservation execution information indicating whether or not control (for example, processing for switching the occupied bandwidth of the monitoring line 103 ₁ between nighttime and daytime) is ongoing, and the head node device under a preset polling order. From that order, the polling (hereinafter, monitoring control performed under such polling is referred to as "forced monitoring control") is compulsorily started, and the compulsion indicating whether or not the polling has been completed for all node devices has been completed. A polling control register indicating implementation information is provided in advance. Further, as shown in FIG. 6, all these combinations of the values of the operation information, the reservation execution information, the control execution information and the compulsory execution information are polled in these external storages or main storages, and each of these combinations is polled. A polling control table composed of a set of polling permission / prohibition information individually indicating whether or not to perform is stored in advance.

The processor 92 ₁ determines whether or not the operation unit 106 ₁ is operated by the operator in the process of executing the task activated at a predetermined frequency or timing (FIG. 4 (1)). Whether large processing is being performed (Fig. 4 (2)), whether reservation monitoring control is being performed (Fig. 4)
(3)), it is determined whether or not the forced monitoring control is being performed (FIG. 4 (4)), and the result of these determinations is the operation information described above (see FIG. 4).
, '), Control execution information (FIG. 4, ′), reservation execution information (FIG. 4, ′) and forced execution information (FIG. 4, ′) are stored in the polling control register as updated values.

Further, the processor 92 _1, a new polled operation information stored in the polling control table in the process of determining the control execution information, reservation execution information and polling based on a combination of the values of the compulsory information control table By referring to, the polling permission / prohibition information corresponding to the combination is obtained, and if it is recognized that the polling can be continued based on the value, the processing is continued, but conversely, if not, As indicated by the dotted line with an arrow in FIG. 3, after waiting for the time T _P , the process is continued again.

As for the value of the polling permission / inhibition information stored in the polling control table, as shown in FIG. 5, the forcible monitoring control is performed while the operation unit 106 ₁ is being operated. Unless otherwise specified, it is set to a value that requires polling regulation, and is set to the same value when either a large amount of processing or reservation monitoring control is being performed. When neither large processing nor reservation monitoring control is being performed, the opposite value is set regardless of whether forced monitoring control is being performed.

That is, priorities are set in advance during the operation performed on the operation unit 106 ₁ , processing with a large amount of processing, reservation monitoring control and forced monitoring control, which are adapted to the form of the transmission system and the monitoring control, and Under that priority, polling is automatically performed at an appropriate timing and frequency. Therefore, according to the present embodiment, processing of a large amount of supervisory control information obtained in the polling process is suspended due to priority of other processing, or congestion related to internal processing of the monitoring device 91 _1. The occurrence of a condition is avoided.

FIG. 6 is an operation flowchart of this embodiment.
(3) Hereinafter, the operation of this embodiment corresponding to the invention described in claim 6 will be described with reference to FIGS. In the monitoring device 91 ₁ , the processor 92 ₁ monitors whether a report has been received from any of the node devices 101 _{1 to} 101 _N via the communication interface unit 105 ₁ (FIG. 6 (1)). Furthermore, the processor 92 _1, if any report is received, the excluded node device of the transmission source monitoring control of the report (e.g., or there is no any response, in operation based on the configuration information of the system It was decided that it was not obvious) (Fig. 6
(2)) If the result is true, the value of the compulsory execution information contained in the polling control register is set to a value indicating the active state ((3) in FIG. 6).

[0051] The processor 92 _1, when the above-mentioned report is not received, the polling for any node device determines whether or not resumed (Fig. 6
(4))), if the result is false, no processing is performed. However, in the case were true Conversely, if the processor 92 ₁ determines whether or not the polling for the corresponding node device has been suspended (Fig. 6 (5)), the result is false If no processing is performed, but on the contrary it is true, the value of the compulsory execution information included in the polling control register is set to a value indicating the active state (FIG. 6).
(3)).

As described above, according to the present embodiment, the forcible monitoring control is surely performed for the node device that has issued any report or the node device that is not the target of polling. The start is promoted and it is put into operation immediately. FIG. 7 is an operation flowchart (4) of this embodiment.

FIG. 8 is an operation flowchart of this embodiment.
(5) Hereinafter, the operation of the present embodiment corresponding to the invention described in claim 7 will be described with reference to FIGS. In the monitoring device 91 ₁ , the processor 92 ₁ uses the node device 1 in the course of the series of processing shown in FIGS. 3, 4 and 6.
01 _{1 to} 101 _N monitor the period in which a large amount of processing is executed at a predetermined timing or frequency (FIG. 7 (1)),
During that period, the monitoring line 103 is addressed to all the monitoring devices included in the system by the suspension command requesting the suspension of polling.
_It is sent to ₁ (FIG. 7 (2)).

Node device 101₁~ 101_NIs like this
When a special pause command is given via the monitoring line, the command
By exchanging the
Here, for simplicity, the code "91₂ Is indicated by
It ), And suspends polling once (Fig. 7).
(3)). On the other hand, a monitoring device that is the destination of such a pause command
91₂ Then, the processor 92 ₂ Is some kind of node device
If it is polling for
At the time of completion of ringing (Fig. 3 (12)) or waiting (Fig.
The following processing is performed in 3 (13)).

[0055] The processor 92 ₂ performs whether or not the received pause instruction described above determination (FIG. 8 (1)), but the result is not to perform any new processing if false, true in the opposite In some cases, it waits (FIG. 8 (3)) while monitoring the time when a restart command described later is received from another monitoring device 91 ₁ (FIG. 8 (2)). Further, in the monitoring device 91 ₁ , the processor 9
2 _1, the period mentioned above is completed, the resuming request indicating that in the same manner as the rest command described above is sent to the addressed monitoring device 91 ₂ (FIG. 7 (4)), and resumes the polling has been suspended (Or, start forced monitoring control) (FIG. 7 (5)).

Therefore, according to the present embodiment, polling is automatically restricted when the load on the node devices 101 _{1 to} 101 _N is large, and such a condition is promptly resolved to improve the operation efficiency. . Below, FIG.
The operation of this embodiment corresponding to the invention of claim 8 will be described with reference to FIG.

[0057] The processor 92 ₁ processes that emit resuming instruction (FIG. 7 (4)) is omitted by resumes polling (or force monitoring control start) (FIG. 7 (5)). Also, the processor 9
2 _2, in conjunction with such a start instruction, determines whether or not the polling (or forced monitor control) polling command given in accordance with the given (FIG. 8 (4)), the result is false As long as possible, it is continuously determined whether or not the restart instruction is received from the monitoring device 91 ₁ .

Therefore, according to this embodiment, a failure occurs in any of the monitoring lines 103 ₁ , 103 ₂ , the node devices 101 ₁ -101 _N and the transmission lines 102 ₁ -102 _N-1 , and the restart command is normal. If it is not received, or if the restart command is not sent by the monitoring device 91 ₂ originally or due to a failure, the polling previously interrupted is reliably restarted.

The operation of this embodiment corresponding to the invention described in claim 9 will be described below with reference to FIGS. Differs from the embodiments of the invention according to claim 7 and 8 described above with the present embodiment, the processor 92 ₂ monitoring device 9
1 ₁ given resuming instruction from (or polling command) to monitor the process (FIG. 8 (2), (4)) to the parallel, the threshold T _th the length of the period in which monitoring is performed is predetermined If the result of the determination is true, the compulsory execution information contained in the polling control register is set to an active value (FIG. 8 (6)).
(7)) There is a point.

[0060] That is, according to this embodiment, the monitoring circuit 103 _1, 103 _2, the node device 101 ₁ to 101 _N and the transmission path 102 ₁ to 102 _N-1 of either the resuming instruction or polling failure occurs Even when both commands are not normally received, the polling interrupted previously is reliably restarted, so that the monitoring control is reliably performed and the reliability is enhanced.

In each of the above-described embodiments, the frequency and timing at which the monitoring device that performs monitoring control under polling monitors or discriminates various states are not specifically shown, but the present invention is not limited to this. Any frequency and timing may be set as long as they can be monitored and determined with desired accuracy. Further, in each of the above-described embodiments, whether polling is possible or not is determined based on a combination of values stored in advance in the polling control table, but the present invention is not limited to such a calculation procedure, and for example, It is not allowed to change the value of polling permission / prohibition information for the combination of values of operation information, control execution information, reservation execution information, and compulsory execution information, or it is permissible to appropriately generate software (load module) according to the change. In this case, the values of the operation information, the control execution information, the reservation execution information, and the compulsory execution information may be logically calculated to obtain the value of the polling permission / prohibition information.

Further, in each of the above-described embodiments, the polling process and the polling control register contents updating process are performed by different tasks, and the processes relating to synchronization and communication between these tasks will not be described. However, the present invention does not require any task configuration as long as these processes are surely performed at a desired frequency and timing and the polling control registers can be referred to each other, and These functions may be function-distributed or load-distributed to different processing devices.

Further, in each of the above-described embodiments, the timer for determining the standby time and other timings is configured by software, but the present invention is not limited to such a configuration and is controlled by, for example, a processing device. It may be configured by hardware.

[0064]

As described above, according to the first aspect of the present invention, the presence or absence of a transmission request, the availability of reception, and the normal operating status of each device can be recognized more quickly than in the conventional example. To be done.

According to the second aspect of the invention, since the processing means performs the receiving process and the transmitting process in the state where the process related to the man-machine interface is being performed, the efficiency of these processes is lowered or the receiving process is performed. It is possible to avoid a situation in which a large amount of information that is generated in the process of and should be subjected to some processing is accumulated. According to the third aspect of the present invention, it is possible to prevent the individual devices from being overloaded due to frequent inquiries.

According to the fourth aspect of the present invention, the reception processing and the transmission processing performed by the processing means in response to the inquiry made at the reserved time are similarly performed in response to the inquiry made constantly. The processing and the transmission processing are surely prioritized. In the invention according to claim 5, when a desired event occurs in the course of operation, it becomes possible to promptly grasp the presence or absence of a transmission request, the availability of reception, and other states for all the devices.

In the invention described in claim 6, the device which has not been the subject of the inquiry is promptly and surely the subject of the subsequent inquiry. According to the invention described in claim 7, even when there are a plurality of inquiring systems, a decrease in processing efficiency that may occur due to a plurality of inquiries by these systems being simultaneously given to individual devices is avoided. .

In the invention described in claim 8, the procedure for realizing the arbitration relating to the acquisition of the initiative of the inquiry among the plurality of systems described above is simplified, and in the same manner as the invention described in claim 7, A decrease in processing efficiency is avoided. In the invention described in claim 9, as compared with the invention described in claim 8, the procedure required for realizing the arbitration is further simplified, and a decrease in processing efficiency is avoided.

Therefore, in the system to which the present invention is applied, the real-time property relating to the grasp of the status of a plurality of devices to be polled is improved, the polling efficiency is improved, and the reliability and throughput are maintained high. To be done.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the invention described in claims 1-9.

FIG. 2 is a diagram showing an embodiment corresponding to the invention described in claims 1 to 9.

FIG. 3 is an operation flowchart (1) of this embodiment.

FIG. 4 is an operation flowchart (2) of this embodiment.

FIG. 5 is a diagram showing a configuration of a polling control register and a polling control table.

FIG. 6 is an operation flowchart (3) of this embodiment.

FIG. 7 is an operation flowchart (4) of this embodiment.

FIG. 8 is an operation flowchart (5) of this embodiment.

FIG. 9 is a diagram showing a configuration example of a conventional monitoring control system.

FIG. 10 is an operation flowchart of a conventional example.

FIG. 11 is a diagram illustrating an operation of a conventional example.

[Explanation of symbols]

11 devices 12 Inquiries 13 Response analysis means 14 Processing means 21 Man-machine interface means 31 storage means 41 Status notification means 51 Hold notification means 91, 104 monitoring device 92,109 processors 101 node device 102 transmission line 103 monitoring line 105 Communication interface section 106 Operation part 107 display 108 external memory

Continuation of front page (56) Reference JP-A-56-140740 (JP, A) JP-A-3-44234 (JP, A) JP-A-1-204168 (JP, A) JP-A-62-1740 (JP) , A) JP-A-2-177639 (JP, A) JP-A-3-190337 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 29/08 H04L 12/28

Claims (9)

(57) [Claims] 1. An inquiring device for sequentially inquiring a plurality of devices as to whether there is a transmission request or a reception possibility, and an inquiring device which is given by the inquiring device among the plurality of devices. The response analysis unit that analyzes the response and determines whether to permit or not to continue the inquiry, the reception process of the information transmitted by the target, and the transmission process of transmitting the transmission information to the target are performed. And a processing unit that performs according to the result of the analysis performed by the response analysis unit, wherein the processing unit has a unit that detects the end time point of the reception process and the transmission process, the inquiry unit Temporarily suspends the inquiry at a frequency preset along the time axis or set based on the count value of the target, and A polling control system comprising means for performing the continuation when the result of the determination made by the analyzing means indicates that the continuation is permitted and at the time point detected by the processing means. 2. The polling control method according to claim 1, further comprising: a man-machine interface unit that serves as a man-machine interface for information relating to an inquiry, a reception process, and a transmission process, and the inquiry unit includes the man-machine. A polling control system comprising means for suspending the continuation of the inquiry when the man-machine interface is being taken by the interface means. 3. The polling control method according to claim 1, wherein the inquiry unit is a device which is a destination of the transmission information among a plurality of devices regarding the transmission information transmitted by the processing unit in the process of the transmission process. Polling, characterized in that it includes means for obtaining the processing amount of processing to be performed based on the format or content of the transmission information and holding the continuation of the inquiry for a time given by a monotonically non-decreasing function for the processing amount. control method. 4. The polling control system according to claim 1, wherein the inquiry means includes means for starting or continuing an inquiry at a preset time and withholding an inquiry subsequent to the inquiry. And polling control method. 5. The polling control method according to any one of claims 1 to 4, wherein the inquiry means newly starts an inquiry according to a preset factor, and a plurality of the inquiry are made. A polling control method including means for restricting the hold until the device makes a round. 6. The polling control method according to claim 1, wherein a target of an inquiry made by an inquiry unit and a target of the inquiry among the plurality of devices are stored. A storage unit, the inquiry unit includes a unit for limiting an inquiry target to the device stored in the storage unit, and the processing unit includes a unit for storing the information based on the format of the information targeted for the reception process. The inquiring means determines whether or not the device obtained by the processing means is stored in the storage means, and when the result is false, the device is obtained. A polling control method characterized by including means for preferentially inquiring about. 7. The polling control method according to any one of claims 1 to 6, wherein a status notification means for generating a status indicating a status where the inquiry means is continuing the inquiry and outputting the status. The inquiring means includes means for determining whether or not a status indicating the same state as the above-mentioned state is given from the outside, and suspending the inquiry for a period in which the result is given. Polling control method. 8. The polling control method according to claim 1, wherein when the inquiry means holds an inquiry, a status indicating that fact is generated, and the status is output and the pending notification is issued. The processing means includes means for performing either reception processing or transmission processing in response to an inquiry given from the outside together with a plurality of devices, and the inquiry means includes the same status as the status from the outside. Polling control method characterized by including means for determining whether or not is given, holding the inquiry when the status is given, and canceling the holding in response to an inquiry given from the outside. . 9. The polling control method according to claim 1, wherein when the inquiry means holds an inquiry, a status indicating that fact is generated, and the status is output and the pending notification is issued. The processing means includes means for performing either reception processing or transmission processing in response to an inquiry given from the outside together with a plurality of devices, and the inquiry means includes the same status as the status from the outside. A polling control method comprising: means for determining whether or not is given, and holding the inquiry for a predetermined period when the status is given.